normal for the date

Lake Ontario at Rochester: history

On 4 October 2026 Lake Ontario at Rochester averaged 74.912 m above IGLD 1985.

That is within the normal range for the date. The normal range for 4 October is 74.39 m to 74.92 m: the 10th to 90th percentile of the daily averages from 27 September to 11 October in 98 years between 1882 and 2025.

The last 90 days, against the normal range for each day

Level
Above the normal range
Normal range for the date
Median for the date
A year earlier

Daily averages of Lake Ontario at Rochester from 7 July 2026 to 4 October 2026, with the normal range for each day and the same days a year earlier.

Table: The last 90 days, against the normal range for each day

Day	Daily average (m)	Normal range	Median	A year earlier
7 July 2026	75.380 m	74.707 m to 75.338 m	75.061 m	75.067 m
8 July 2026	75.369 m	74.707 m to 75.335 m	75.055 m	75.070 m
9 July 2026	75.374 m	74.707 m to 75.335 m	75.052 m	75.062 m
10 July 2026	75.378 m	74.704 m to 75.334 m	75.049 m	75.054 m
11 July 2026	75.371 m	74.701 m to 75.329 m	75.047 m	75.045 m
12 July 2026	75.357 m	74.701 m to 75.327 m	75.042 m	75.039 m
13 July 2026	75.348 m	74.701 m to 75.326 m	75.039 m	75.032 m
14 July 2026	75.348 m	74.701 m to 75.326 m	75.035 m	75.038 m
15 July 2026	75.368 m	74.701 m to 75.324 m	75.033 m	75.040 m
16 July 2026	75.364 m	74.698 m to 75.323 m	75.031 m	75.036 m
17 July 2026	75.353 m	74.693 m to 75.319 m	75.025 m	75.042 m
18 July 2026	75.326 m	74.692 m to 75.314 m	75.023 m	75.058 m
19 July 2026	75.348 m	74.683 m to 75.314 m	75.020 m	75.023 m
20 July 2026	75.337 m	74.680 m to 75.314 m	75.017 m	75.023 m
21 July 2026	75.332 m	74.680 m to 75.314 m	75.015 m	75.021 m
22 July 2026	75.352 m	74.677 m to 75.314 m	75.012 m	75.003 m
23 July 2026	75.352 m	74.674 m to 75.305 m	75.010 m	74.982 m
24 July 2026	75.335 m	74.671 m to 75.304 m	75.007 m	74.971 m
25 July 2026	75.307 m	74.667 m to 75.295 m	75.005 m	74.992 m
26 July 2026	75.302 m	74.661 m to 75.293 m	75.003 m	75.005 m
27 July 2026	75.289 m	74.658 m to 75.289 m	74.999 m	75.000 m
28 July 2026	75.317 m	74.655 m to 75.283 m	74.997 m	74.994 m
29 July 2026	75.332 m	74.652 m to 75.283 m	74.994 m	74.996 m
30 July 2026	75.330 m	74.649 m to 75.283 m	74.992 m	74.998 m
31 July 2026	75.309 m	74.646 m to 75.283 m	74.987 m	74.982 m
1 August 2026	75.293 m	74.645 m to 75.283 m	74.982 m	74.943 m
2 August 2026	75.305 m	74.642 m to 75.277 m	74.978 m	74.928 m
3 August 2026	75.340 m	74.640 m to 75.274 m	74.975 m	74.926 m
4 August 2026	75.344 m	74.637 m to 75.257 m	74.971 m	74.932 m
5 August 2026	75.330 m	74.637 m to 75.253 m	74.965 m	74.932 m
6 August 2026	75.334 m	74.631 m to 75.253 m	74.960 m	74.906 m
7 August 2026	75.332 m	74.627 m to 75.250 m	74.957 m	74.891 m
8 August 2026	75.327 m	74.622 m to 75.242 m	74.953 m	74.884 m
9 August 2026	75.331 m	74.622 m to 75.238 m	74.948 m	74.878 m
10 August 2026	75.318 m	74.616 m to 75.234 m	74.944 m	74.893 m
11 August 2026	75.315 m	74.613 m to 75.231 m	74.939 m	74.894 m
12 August 2026	75.303 m	74.610 m to 75.222 m	74.933 m	74.888 m
13 August 2026	75.301 m	74.610 m to 75.222 m	74.927 m	74.899 m
14 August 2026	75.302 m	74.607 m to 75.218 m	74.923 m	74.902 m
15 August 2026	75.276 m	74.600 m to 75.213 m	74.921 m	74.877 m
16 August 2026	75.247 m	74.597 m to 75.204 m	74.917 m	74.857 m
17 August 2026	75.249 m	74.591 m to 75.195 m	74.912 m	74.866 m
18 August 2026	75.252 m	74.585 m to 75.192 m	74.908 m	74.839 m
19 August 2026	75.250 m	74.579 m to 75.192 m	74.902 m	74.816 m
20 August 2026	75.256 m	74.570 m to 75.183 m	74.898 m	74.831 m
21 August 2026	75.240 m	74.564 m to 75.175 m	74.892 m	74.827 m
22 August 2026	75.223 m	74.561 m to 75.171 m	74.887 m	74.826 m
23 August 2026	75.222 m	74.555 m to 75.161 m	74.882 m	74.865 m
24 August 2026	75.244 m	74.552 m to 75.161 m	74.878 m	74.869 m
25 August 2026	75.266 m	74.549 m to 75.161 m	74.872 m	74.864 m
26 August 2026	75.241 m	74.546 m to 75.156 m	74.866 m	74.864 m
27 August 2026	75.216 m	74.540 m to 75.146 m	74.863 m	74.846 m
28 August 2026	75.223 m	74.540 m to 75.135 m	74.857 m	74.832 m
29 August 2026	75.207 m	74.536 m to 75.131 m	74.852 m	74.850 m
30 August 2026	75.198 m	74.536 m to 75.131 m	74.847 m	74.826 m
31 August 2026	75.204 m	74.536 m to 75.123 m	74.843 m	74.810 m
1 September 2026	no value	74.533 m to 75.108 m	74.837 m	74.797 m
2 September 2026	no value	74.530 m to 75.101 m	74.833 m	74.785 m
3 September 2026	no value	74.525 m to 75.100 m	74.828 m	74.778 m
4 September 2026	no value	74.524 m to 75.100 m	74.823 m	74.781 m
5 September 2026	75.228 m	74.524 m to 75.090 m	74.819 m	74.783 m
6 September 2026	75.210 m	74.518 m to 75.079 m	74.814 m	74.798 m
7 September 2026	75.195 m	74.515 m to 75.070 m	74.808 m	74.796 m
8 September 2026	75.188 m	74.515 m to 75.064 m	74.803 m	74.785 m
9 September 2026	75.182 m	74.506 m to 75.054 m	74.793 m	74.761 m
10 September 2026	75.207 m	74.495 m to 75.049 m	74.788 m	74.742 m
11 September 2026	75.213 m	74.492 m to 75.046 m	74.783 m	74.740 m
12 September 2026	75.182 m	74.488 m to 75.042 m	74.778 m	74.736 m
13 September 2026	75.170 m	74.485 m to 75.039 m	74.769 m	74.722 m
14 September 2026	75.164 m	74.485 m to 75.033 m	74.762 m	74.725 m
15 September 2026	75.126 m	74.476 m to 75.022 m	74.757 m	74.720 m
16 September 2026	75.123 m	74.469 m to 75.015 m	74.753 m	74.708 m
17 September 2026	75.118 m	74.469 m to 75.012 m	74.747 m	74.706 m
18 September 2026	75.110 m	74.463 m to 75.011 m	74.741 m	74.703 m
19 September 2026	75.077 m	74.454 m to 75.009 m	74.735 m	74.711 m
20 September 2026	75.059 m	74.447 m to 75.004 m	74.729 m	74.688 m
21 September 2026	75.049 m	74.442 m to 74.992 m	74.725 m	74.664 m
22 September 2026	75.011 m	74.433 m to 74.985 m	74.720 m	74.663 m
23 September 2026	74.990 m	74.424 m to 74.981 m	74.714 m	74.669 m
24 September 2026	74.974 m	74.415 m to 74.972 m	74.710 m	74.697 m
25 September 2026	74.975 m	74.412 m to 74.966 m	74.705 m	74.698 m
26 September 2026	74.991 m	74.408 m to 74.961 m	74.701 m	74.703 m
27 September 2026	74.982 m	74.415 m to 74.960 m	74.698 m	74.699 m
28 September 2026	74.968 m	74.412 m to 74.957 m	74.696 m	74.693 m
29 September 2026	74.954 m	74.408 m to 74.954 m	74.692 m	74.684 m
30 September 2026	74.942 m	74.408 m to 74.948 m	74.689 m	74.675 m
1 October 2026	74.931 m	74.403 m to 74.945 m	74.684 m	74.647 m
2 October 2026	74.959 m	74.402 m to 74.932 m	74.680 m	74.627 m
3 October 2026	74.948 m	74.396 m to 74.927 m	74.675 m	74.614 m
4 October 2026	74.912 m	74.393 m to 74.922 m	74.673 m	74.610 m

The last 12 months, against the normal range for each day

Level
Above the normal range
Normal range for the date
Median for the date

Daily averages of Lake Ontario at Rochester from 4 October 2025 to 4 October 2026, with the normal range for each day.

Table: The last 12 months, against the normal range for each day

Day	Daily average (m)	Normal range	Median
4 October 2025	74.610 m	74.393 m to 74.922 m	74.673 m
5 October 2025	74.617 m	74.390 m to 74.918 m	74.668 m
6 October 2025	74.628 m	74.384 m to 74.915 m	74.664 m
7 October 2025	74.637 m	74.380 m to 74.912 m	74.658 m
8 October 2025	74.658 m	74.378 m to 74.910 m	74.653 m
9 October 2025	74.627 m	74.372 m to 74.907 m	74.651 m
10 October 2025	74.592 m	74.366 m to 74.904 m	74.644 m
11 October 2025	74.580 m	74.363 m to 74.902 m	74.642 m
12 October 2025	74.579 m	74.363 m to 74.901 m	74.640 m
13 October 2025	74.563 m	74.357 m to 74.901 m	74.637 m
14 October 2025	74.557 m	74.351 m to 74.899 m	74.634 m
15 October 2025	74.551 m	74.350 m to 74.901 m	74.633 m
16 October 2025	74.550 m	74.341 m to 74.905 m	74.628 m
17 October 2025	74.553 m	74.335 m to 74.905 m	74.623 m
18 October 2025	74.548 m	74.332 m to 74.905 m	74.619 m
19 October 2025	74.521 m	74.329 m to 74.905 m	74.616 m
20 October 2025	74.562 m	74.322 m to 74.908 m	74.613 m
21 October 2025	74.548 m	74.320 m to 74.908 m	74.605 m
22 October 2025	74.531 m	74.320 m to 74.909 m	74.603 m
23 October 2025	74.545 m	74.320 m to 74.908 m	74.599 m
24 October 2025	74.560 m	74.320 m to 74.908 m	74.596 m
25 October 2025	74.556 m	74.309 m to 74.903 m	74.591 m
26 October 2025	74.540 m	74.308 m to 74.896 m	74.588 m
27 October 2025	74.518 m	74.307 m to 74.887 m	74.584 m
28 October 2025	74.501 m	74.305 m to 74.884 m	74.579 m
29 October 2025	74.486 m	74.305 m to 74.884 m	74.576 m
30 October 2025	74.490 m	74.305 m to 74.884 m	74.573 m
31 October 2025	74.510 m	74.302 m to 74.884 m	74.568 m
1 November 2025	74.516 m	74.302 m to 74.884 m	74.566 m
2 November 2025	74.498 m	74.302 m to 74.881 m	74.563 m
3 November 2025	74.485 m	74.301 m to 74.879 m	74.561 m
4 November 2025	74.515 m	74.299 m to 74.876 m	74.557 m
5 November 2025	74.518 m	74.297 m to 74.874 m	74.554 m
6 November 2025	74.521 m	74.296 m to 74.873 m	74.552 m
7 November 2025	74.493 m	74.294 m to 74.871 m	74.552 m
8 November 2025	74.508 m	74.293 m to 74.862 m	74.549 m
9 November 2025	74.520 m	74.289 m to 74.858 m	74.546 m
10 November 2025	74.501 m	74.287 m to 74.858 m	74.545 m
11 November 2025	74.497 m	74.284 m to 74.857 m	74.543 m
12 November 2025	74.477 m	74.280 m to 74.857 m	74.538 m
13 November 2025	74.499 m	74.279 m to 74.857 m	74.536 m
14 November 2025	74.499 m	74.277 m to 74.857 m	74.535 m
15 November 2025	74.485 m	74.274 m to 74.857 m	74.533 m
16 November 2025	74.514 m	74.274 m to 74.857 m	74.530 m
17 November 2025	74.508 m	74.271 m to 74.857 m	74.528 m
18 November 2025	74.495 m	74.265 m to 74.857 m	74.527 m
19 November 2025	74.489 m	74.265 m to 74.857 m	74.526 m
20 November 2025	74.483 m	74.265 m to 74.857 m	74.525 m
21 November 2025	74.475 m	74.265 m to 74.857 m	74.526 m
22 November 2025	74.479 m	74.265 m to 74.857 m	74.525 m
23 November 2025	74.477 m	74.265 m to 74.857 m	74.525 m
24 November 2025	74.482 m	74.263 m to 74.854 m	74.524 m
25 November 2025	74.475 m	74.263 m to 74.852 m	74.523 m
26 November 2025	74.462 m	74.263 m to 74.852 m	74.522 m
27 November 2025	74.450 m	74.263 m to 74.851 m	74.523 m
28 November 2025	74.487 m	74.263 m to 74.850 m	74.523 m
29 November 2025	74.478 m	74.261 m to 74.850 m	74.524 m
30 November 2025	74.449 m	74.265 m to 74.849 m	74.523 m
1 December 2025	74.474 m	74.269 m to 74.849 m	74.523 m
2 December 2025	74.472 m	74.269 m to 74.849 m	74.523 m
3 December 2025	74.449 m	74.267 m to 74.845 m	74.524 m
4 December 2025	74.468 m	74.263 m to 74.844 m	74.524 m
5 December 2025	74.444 m	74.266 m to 74.839 m	74.524 m
6 December 2025	74.434 m	74.266 m to 74.839 m	74.525 m
7 December 2025	74.447 m	74.268 m to 74.837 m	74.526 m
8 December 2025	74.445 m	74.268 m to 74.837 m	74.527 m
9 December 2025	74.419 m	74.269 m to 74.836 m	74.528 m
10 December 2025	74.431 m	74.271 m to 74.836 m	74.530 m
11 December 2025	74.453 m	74.275 m to 74.836 m	74.531 m
12 December 2025	74.428 m	74.274 m to 74.836 m	74.532 m
13 December 2025	74.418 m	74.275 m to 74.836 m	74.535 m
14 December 2025	74.432 m	74.276 m to 74.836 m	74.536 m
15 December 2025	74.421 m	74.277 m to 74.835 m	74.536 m
16 December 2025	74.396 m	74.280 m to 74.834 m	74.537 m
17 December 2025	74.396 m	74.280 m to 74.835 m	74.537 m
18 December 2025	74.398 m	74.280 m to 74.836 m	74.537 m
19 December 2025	74.389 m	74.286 m to 74.840 m	74.539 m
20 December 2025	74.413 m	74.289 m to 74.841 m	74.539 m
21 December 2025	74.417 m	74.289 m to 74.841 m	74.539 m
22 December 2025	74.416 m	74.290 m to 74.843 m	74.539 m
23 December 2025	74.415 m	74.290 m to 74.845 m	74.540 m
24 December 2025	74.424 m	74.290 m to 74.847 m	74.541 m
25 December 2025	74.420 m	74.290 m to 74.848 m	74.545 m
26 December 2025	74.416 m	74.288 m to 74.850 m	74.545 m
27 December 2025	74.431 m	74.289 m to 74.852 m	74.547 m
28 December 2025	74.425 m	74.287 m to 74.855 m	74.548 m
29 December 2025	74.423 m	74.287 m to 74.856 m	74.551 m
30 December 2025	74.477 m	74.287 m to 74.857 m	74.552 m
31 December 2025	74.463 m	74.284 m to 74.857 m	74.553 m
1 January 2026	74.480 m	74.284 m to 74.857 m	74.555 m
2 January 2026	74.471 m	74.283 m to 74.857 m	74.555 m
3 January 2026	74.469 m	74.283 m to 74.857 m	74.555 m
4 January 2026	74.486 m	74.280 m to 74.859 m	74.557 m
5 January 2026	74.484 m	74.280 m to 74.862 m	74.558 m
6 January 2026	74.486 m	74.280 m to 74.864 m	74.559 m
7 January 2026	74.500 m	74.281 m to 74.877 m	74.561 m
8 January 2026	74.506 m	74.280 m to 74.886 m	74.564 m
9 January 2026	74.498 m	74.280 m to 74.887 m	74.567 m
10 January 2026	74.526 m	74.284 m to 74.887 m	74.568 m
11 January 2026	74.534 m	74.287 m to 74.887 m	74.572 m
12 January 2026	74.533 m	74.291 m to 74.902 m	74.574 m
13 January 2026	74.535 m	74.298 m to 74.905 m	74.574 m
14 January 2026	74.556 m	74.299 m to 74.908 m	74.576 m
15 January 2026	74.585 m	74.302 m to 74.914 m	74.578 m
16 January 2026	74.575 m	74.302 m to 74.917 m	74.579 m
17 January 2026	74.574 m	74.302 m to 74.923 m	74.582 m
18 January 2026	74.574 m	74.302 m to 74.930 m	74.582 m
19 January 2026	74.569 m	74.302 m to 74.935 m	74.585 m
20 January 2026	74.578 m	74.311 m to 74.946 m	74.590 m
21 January 2026	74.568 m	74.311 m to 74.955 m	74.594 m
22 January 2026	74.580 m	74.311 m to 74.956 m	74.598 m
23 January 2026	74.592 m	74.320 m to 74.960 m	74.600 m
24 January 2026	74.600 m	74.320 m to 74.969 m	74.604 m
25 January 2026	74.575 m	74.320 m to 74.972 m	74.607 m
26 January 2026	74.596 m	74.320 m to 74.975 m	74.612 m
27 January 2026	74.581 m	74.320 m to 74.980 m	74.613 m
28 January 2026	74.576 m	74.320 m to 74.982 m	74.614 m
29 January 2026	74.592 m	74.320 m to 74.985 m	74.618 m
30 January 2026	74.590 m	74.320 m to 74.986 m	74.622 m
31 January 2026	74.584 m	74.317 m to 74.987 m	74.625 m
1 February 2026	74.574 m	74.319 m to 74.988 m	74.627 m
2 February 2026	74.560 m	74.314 m to 74.990 m	74.630 m
3 February 2026	74.554 m	74.309 m to 74.992 m	74.633 m
4 February 2026	74.555 m	74.308 m to 74.994 m	74.634 m
5 February 2026	74.551 m	74.307 m to 74.997 m	74.636 m
6 February 2026	74.548 m	74.306 m to 75.000 m	74.638 m
7 February 2026	74.576 m	74.306 m to 75.003 m	74.637 m
8 February 2026	74.553 m	74.305 m to 75.004 m	74.637 m
9 February 2026	74.532 m	74.305 m to 75.005 m	74.636 m
10 February 2026	74.528 m	74.296 m to 75.006 m	74.631 m
11 February 2026	74.539 m	74.296 m to 75.007 m	74.630 m
12 February 2026	74.543 m	74.293 m to 75.009 m	74.628 m
13 February 2026	74.523 m	74.284 m to 75.009 m	74.627 m
14 February 2026	74.524 m	74.280 m to 75.009 m	74.624 m
15 February 2026	74.517 m	74.280 m to 75.010 m	74.622 m
16 February 2026	74.508 m	74.280 m to 75.013 m	74.622 m
17 February 2026	74.506 m	74.280 m to 75.013 m	74.622 m
18 February 2026	74.501 m	74.284 m to 75.014 m	74.621 m
19 February 2026	74.511 m	74.284 m to 75.013 m	74.622 m
20 February 2026	74.502 m	74.284 m to 75.011 m	74.622 m
21 February 2026	74.527 m	74.284 m to 75.011 m	74.624 m
22 February 2026	74.539 m	74.284 m to 75.010 m	74.625 m
23 February 2026	74.551 m	74.284 m to 75.010 m	74.632 m
24 February 2026	74.552 m	74.284 m to 75.013 m	74.634 m
25 February 2026	74.544 m	74.284 m to 75.016 m	74.640 m
26 February 2026	74.552 m	74.284 m to 75.019 m	74.643 m
27 February 2026	74.544 m	74.284 m to 75.020 m	74.643 m
28 February 2026	74.546 m	74.284 m to 75.020 m	74.643 m
1 March 2026	74.560 m	74.284 m to 75.022 m	74.643 m
2 March 2026	74.548 m	74.285 m to 75.024 m	74.643 m
3 March 2026	74.539 m	74.287 m to 75.024 m	74.648 m
4 March 2026	74.537 m	74.287 m to 75.028 m	74.649 m
5 March 2026	74.546 m	74.289 m to 75.028 m	74.655 m
6 March 2026	74.535 m	74.292 m to 75.029 m	74.658 m
7 March 2026	74.532 m	74.295 m to 75.035 m	74.661 m
8 March 2026	74.567 m	74.297 m to 75.039 m	74.663 m
9 March 2026	74.581 m	74.302 m to 75.041 m	74.665 m
10 March 2026	74.598 m	74.302 m to 75.048 m	74.671 m
11 March 2026	74.629 m	74.305 m to 75.061 m	74.674 m
12 March 2026	74.655 m	74.305 m to 75.062 m	74.674 m
13 March 2026	74.657 m	74.305 m to 75.068 m	74.675 m
14 March 2026	74.683 m	74.317 m to 75.071 m	74.679 m
15 March 2026	74.679 m	74.331 m to 75.078 m	74.689 m
16 March 2026	74.681 m	74.337 m to 75.080 m	74.693 m
17 March 2026	74.720 m	74.341 m to 75.086 m	74.704 m
18 March 2026	74.738 m	74.343 m to 75.098 m	74.710 m
19 March 2026	74.739 m	74.348 m to 75.109 m	74.715 m
20 March 2026	74.754 m	74.361 m to 75.111 m	74.721 m
21 March 2026	74.786 m	74.369 m to 75.114 m	74.725 m
22 March 2026	74.792 m	74.381 m to 75.115 m	74.728 m
23 March 2026	74.785 m	74.392 m to 75.117 m	74.730 m
24 March 2026	74.790 m	74.396 m to 75.122 m	74.733 m
25 March 2026	74.795 m	74.401 m to 75.123 m	74.736 m
26 March 2026	74.812 m	74.402 m to 75.126 m	74.738 m
27 March 2026	74.823 m	74.410 m to 75.130 m	74.741 m
28 March 2026	74.819 m	74.421 m to 75.138 m	74.746 m
29 March 2026	74.815 m	74.430 m to 75.142 m	74.749 m
30 March 2026	74.827 m	74.438 m to 75.148 m	74.753 m
31 March 2026	74.858 m	74.454 m to 75.160 m	74.756 m
1 April 2026	74.894 m	74.461 m to 75.161 m	74.759 m
2 April 2026	74.911 m	74.466 m to 75.167 m	74.768 m
3 April 2026	74.918 m	74.478 m to 75.175 m	74.774 m
4 April 2026	74.929 m	74.485 m to 75.192 m	74.779 m
5 April 2026	74.969 m	74.494 m to 75.194 m	74.789 m
6 April 2026	74.986 m	74.506 m to 75.211 m	74.794 m
7 April 2026	75.006 m	74.509 m to 75.225 m	74.803 m
8 April 2026	75.011 m	74.516 m to 75.241 m	74.811 m
9 April 2026	75.003 m	74.533 m to 75.246 m	74.823 m
10 April 2026	75.027 m	74.536 m to 75.253 m	74.830 m
11 April 2026	75.029 m	74.546 m to 75.257 m	74.836 m
12 April 2026	75.037 m	74.549 m to 75.267 m	74.845 m
13 April 2026	75.038 m	74.555 m to 75.276 m	74.850 m
14 April 2026	75.066 m	74.558 m to 75.278 m	74.856 m
15 April 2026	75.080 m	74.567 m to 75.294 m	74.864 m
16 April 2026	75.110 m	74.573 m to 75.307 m	74.880 m
17 April 2026	75.127 m	74.576 m to 75.319 m	74.887 m
18 April 2026	75.141 m	74.579 m to 75.328 m	74.896 m
19 April 2026	75.177 m	74.588 m to 75.334 m	74.903 m
20 April 2026	75.187 m	74.604 m to 75.337 m	74.909 m
21 April 2026	75.194 m	74.610 m to 75.339 m	74.913 m
22 April 2026	75.208 m	74.630 m to 75.340 m	74.921 m
23 April 2026	75.225 m	74.632 m to 75.344 m	74.930 m
24 April 2026	75.228 m	74.638 m to 75.344 m	74.940 m
25 April 2026	75.245 m	74.640 m to 75.346 m	74.942 m
26 April 2026	75.253 m	74.644 m to 75.348 m	74.945 m
27 April 2026	75.262 m	74.647 m to 75.352 m	74.948 m
28 April 2026	75.255 m	74.653 m to 75.367 m	74.957 m
29 April 2026	75.287 m	74.655 m to 75.375 m	74.960 m
30 April 2026	75.302 m	74.659 m to 75.375 m	74.971 m
1 May 2026	75.305 m	74.659 m to 75.375 m	74.978 m
2 May 2026	75.314 m	74.661 m to 75.378 m	74.987 m
3 May 2026	75.312 m	74.661 m to 75.383 m	74.991 m
4 May 2026	75.314 m	74.666 m to 75.385 m	74.999 m
5 May 2026	75.319 m	74.667 m to 75.385 m	75.000 m
6 May 2026	75.345 m	74.668 m to 75.390 m	75.003 m
7 May 2026	75.339 m	74.668 m to 75.392 m	75.004 m
8 May 2026	75.347 m	74.671 m to 75.394 m	75.009 m
9 May 2026	75.350 m	74.672 m to 75.395 m	75.011 m
10 May 2026	75.351 m	74.676 m to 75.395 m	75.016 m
11 May 2026	75.356 m	74.677 m to 75.395 m	75.020 m
12 May 2026	75.355 m	74.677 m to 75.395 m	75.024 m
13 May 2026	75.363 m	74.680 m to 75.395 m	75.028 m
14 May 2026	75.371 m	74.689 m to 75.395 m	75.033 m
15 May 2026	75.368 m	74.689 m to 75.395 m	75.037 m
16 May 2026	75.371 m	74.692 m to 75.394 m	75.045 m
17 May 2026	75.369 m	74.695 m to 75.384 m	75.049 m
18 May 2026	75.372 m	74.697 m to 75.381 m	75.056 m
19 May 2026	75.365 m	74.685 m to 75.379 m	75.057 m
20 May 2026	75.380 m	74.682 m to 75.380 m	75.062 m
21 May 2026	75.374 m	74.682 m to 75.377 m	75.064 m
22 May 2026	75.362 m	74.678 m to 75.377 m	75.064 m
23 May 2026	75.356 m	74.677 m to 75.377 m	75.065 m
24 May 2026	75.396 m	74.677 m to 75.375 m	75.067 m
25 May 2026	75.402 m	74.677 m to 75.375 m	75.068 m
26 May 2026	75.400 m	74.677 m to 75.375 m	75.069 m
27 May 2026	75.409 m	74.677 m to 75.375 m	75.070 m
28 May 2026	75.411 m	74.677 m to 75.375 m	75.070 m
29 May 2026	75.415 m	74.677 m to 75.375 m	75.070 m
30 May 2026	75.414 m	74.677 m to 75.375 m	75.072 m
31 May 2026	75.404 m	74.677 m to 75.377 m	75.073 m
1 June 2026	75.398 m	74.677 m to 75.377 m	75.074 m
2 June 2026	75.396 m	74.677 m to 75.376 m	75.074 m
3 June 2026	75.388 m	74.677 m to 75.376 m	75.074 m
4 June 2026	75.385 m	74.677 m to 75.376 m	75.075 m
5 June 2026	75.378 m	74.683 m to 75.375 m	75.077 m
6 June 2026	75.382 m	74.689 m to 75.375 m	75.079 m
7 June 2026	75.390 m	74.691 m to 75.375 m	75.081 m
8 June 2026	75.383 m	74.695 m to 75.375 m	75.082 m
9 June 2026	75.370 m	74.697 m to 75.375 m	75.082 m
10 June 2026	75.365 m	74.698 m to 75.375 m	75.082 m
11 June 2026	75.361 m	74.698 m to 75.375 m	75.083 m
12 June 2026	75.366 m	74.698 m to 75.375 m	75.083 m
13 June 2026	75.367 m	74.698 m to 75.375 m	75.083 m
14 June 2026	75.394 m	74.698 m to 75.375 m	75.084 m
15 June 2026	75.399 m	74.698 m to 75.375 m	75.084 m
16 June 2026	75.394 m	74.698 m to 75.375 m	75.085 m
17 June 2026	75.393 m	74.698 m to 75.375 m	75.085 m
18 June 2026	75.409 m	74.698 m to 75.375 m	75.087 m
19 June 2026	75.426 m	74.698 m to 75.375 m	75.088 m
20 June 2026	75.426 m	74.698 m to 75.375 m	75.088 m
21 June 2026	75.418 m	74.698 m to 75.375 m	75.088 m
22 June 2026	75.410 m	74.698 m to 75.373 m	75.087 m
23 June 2026	75.406 m	74.699 m to 75.369 m	75.087 m
24 June 2026	75.407 m	74.701 m to 75.366 m	75.085 m
25 June 2026	75.398 m	74.701 m to 75.366 m	75.083 m
26 June 2026	75.407 m	74.701 m to 75.362 m	75.082 m
27 June 2026	75.402 m	74.701 m to 75.357 m	75.081 m
28 June 2026	75.393 m	74.704 m to 75.354 m	75.080 m
29 June 2026	75.389 m	74.702 m to 75.353 m	75.079 m
30 June 2026	75.381 m	74.701 m to 75.351 m	75.074 m
1 July 2026	75.380 m	74.701 m to 75.344 m	75.073 m
2 July 2026	75.387 m	74.701 m to 75.344 m	75.070 m
3 July 2026	75.393 m	74.704 m to 75.344 m	75.067 m
4 July 2026	75.415 m	74.707 m to 75.344 m	75.064 m
5 July 2026	75.408 m	74.707 m to 75.344 m	75.064 m
6 July 2026	75.397 m	74.707 m to 75.344 m	75.062 m
7 July 2026	75.380 m	74.707 m to 75.338 m	75.061 m
8 July 2026	75.369 m	74.707 m to 75.335 m	75.055 m
9 July 2026	75.374 m	74.707 m to 75.335 m	75.052 m
10 July 2026	75.378 m	74.704 m to 75.334 m	75.049 m
11 July 2026	75.371 m	74.701 m to 75.329 m	75.047 m
12 July 2026	75.357 m	74.701 m to 75.327 m	75.042 m
13 July 2026	75.348 m	74.701 m to 75.326 m	75.039 m
14 July 2026	75.348 m	74.701 m to 75.326 m	75.035 m
15 July 2026	75.368 m	74.701 m to 75.324 m	75.033 m
16 July 2026	75.364 m	74.698 m to 75.323 m	75.031 m
17 July 2026	75.353 m	74.693 m to 75.319 m	75.025 m
18 July 2026	75.326 m	74.692 m to 75.314 m	75.023 m
19 July 2026	75.348 m	74.683 m to 75.314 m	75.020 m
20 July 2026	75.337 m	74.680 m to 75.314 m	75.017 m
21 July 2026	75.332 m	74.680 m to 75.314 m	75.015 m
22 July 2026	75.352 m	74.677 m to 75.314 m	75.012 m
23 July 2026	75.352 m	74.674 m to 75.305 m	75.010 m
24 July 2026	75.335 m	74.671 m to 75.304 m	75.007 m
25 July 2026	75.307 m	74.667 m to 75.295 m	75.005 m
26 July 2026	75.302 m	74.661 m to 75.293 m	75.003 m
27 July 2026	75.289 m	74.658 m to 75.289 m	74.999 m
28 July 2026	75.317 m	74.655 m to 75.283 m	74.997 m
29 July 2026	75.332 m	74.652 m to 75.283 m	74.994 m
30 July 2026	75.330 m	74.649 m to 75.283 m	74.992 m
31 July 2026	75.309 m	74.646 m to 75.283 m	74.987 m
1 August 2026	75.293 m	74.645 m to 75.283 m	74.982 m
2 August 2026	75.305 m	74.642 m to 75.277 m	74.978 m
3 August 2026	75.340 m	74.640 m to 75.274 m	74.975 m
4 August 2026	75.344 m	74.637 m to 75.257 m	74.971 m
5 August 2026	75.330 m	74.637 m to 75.253 m	74.965 m
6 August 2026	75.334 m	74.631 m to 75.253 m	74.960 m
7 August 2026	75.332 m	74.627 m to 75.250 m	74.957 m
8 August 2026	75.327 m	74.622 m to 75.242 m	74.953 m
9 August 2026	75.331 m	74.622 m to 75.238 m	74.948 m
10 August 2026	75.318 m	74.616 m to 75.234 m	74.944 m
11 August 2026	75.315 m	74.613 m to 75.231 m	74.939 m
12 August 2026	75.303 m	74.610 m to 75.222 m	74.933 m
13 August 2026	75.301 m	74.610 m to 75.222 m	74.927 m
14 August 2026	75.302 m	74.607 m to 75.218 m	74.923 m
15 August 2026	75.276 m	74.600 m to 75.213 m	74.921 m
16 August 2026	75.247 m	74.597 m to 75.204 m	74.917 m
17 August 2026	75.249 m	74.591 m to 75.195 m	74.912 m
18 August 2026	75.252 m	74.585 m to 75.192 m	74.908 m
19 August 2026	75.250 m	74.579 m to 75.192 m	74.902 m
20 August 2026	75.256 m	74.570 m to 75.183 m	74.898 m
21 August 2026	75.240 m	74.564 m to 75.175 m	74.892 m
22 August 2026	75.223 m	74.561 m to 75.171 m	74.887 m
23 August 2026	75.222 m	74.555 m to 75.161 m	74.882 m
24 August 2026	75.244 m	74.552 m to 75.161 m	74.878 m
25 August 2026	75.266 m	74.549 m to 75.161 m	74.872 m
26 August 2026	75.241 m	74.546 m to 75.156 m	74.866 m
27 August 2026	75.216 m	74.540 m to 75.146 m	74.863 m
28 August 2026	75.223 m	74.540 m to 75.135 m	74.857 m
29 August 2026	75.207 m	74.536 m to 75.131 m	74.852 m
30 August 2026	75.198 m	74.536 m to 75.131 m	74.847 m
31 August 2026	75.204 m	74.536 m to 75.123 m	74.843 m
1 September 2026	no value	74.533 m to 75.108 m	74.837 m
2 September 2026	no value	74.530 m to 75.101 m	74.833 m
3 September 2026	no value	74.525 m to 75.100 m	74.828 m
4 September 2026	no value	74.524 m to 75.100 m	74.823 m
5 September 2026	75.228 m	74.524 m to 75.090 m	74.819 m
6 September 2026	75.210 m	74.518 m to 75.079 m	74.814 m
7 September 2026	75.195 m	74.515 m to 75.070 m	74.808 m
8 September 2026	75.188 m	74.515 m to 75.064 m	74.803 m
9 September 2026	75.182 m	74.506 m to 75.054 m	74.793 m
10 September 2026	75.207 m	74.495 m to 75.049 m	74.788 m
11 September 2026	75.213 m	74.492 m to 75.046 m	74.783 m
12 September 2026	75.182 m	74.488 m to 75.042 m	74.778 m
13 September 2026	75.170 m	74.485 m to 75.039 m	74.769 m
14 September 2026	75.164 m	74.485 m to 75.033 m	74.762 m
15 September 2026	75.126 m	74.476 m to 75.022 m	74.757 m
16 September 2026	75.123 m	74.469 m to 75.015 m	74.753 m
17 September 2026	75.118 m	74.469 m to 75.012 m	74.747 m
18 September 2026	75.110 m	74.463 m to 75.011 m	74.741 m
19 September 2026	75.077 m	74.454 m to 75.009 m	74.735 m
20 September 2026	75.059 m	74.447 m to 75.004 m	74.729 m
21 September 2026	75.049 m	74.442 m to 74.992 m	74.725 m
22 September 2026	75.011 m	74.433 m to 74.985 m	74.720 m
23 September 2026	74.990 m	74.424 m to 74.981 m	74.714 m
24 September 2026	74.974 m	74.415 m to 74.972 m	74.710 m
25 September 2026	74.975 m	74.412 m to 74.966 m	74.705 m
26 September 2026	74.991 m	74.408 m to 74.961 m	74.701 m
27 September 2026	74.982 m	74.415 m to 74.960 m	74.698 m
28 September 2026	74.968 m	74.412 m to 74.957 m	74.696 m
29 September 2026	74.954 m	74.408 m to 74.954 m	74.692 m
30 September 2026	74.942 m	74.408 m to 74.948 m	74.689 m
1 October 2026	74.931 m	74.403 m to 74.945 m	74.684 m
2 October 2026	74.959 m	74.402 m to 74.932 m	74.680 m
3 October 2026	74.948 m	74.396 m to 74.927 m	74.675 m
4 October 2026	74.912 m	74.393 m to 74.922 m	74.673 m

The last 10 years, weekly averages

Level
Our record

Weekly averages of Lake Ontario at Rochester from the week of 3 October 2016 to 4 October 2026.

Table: The last 10 years, weekly averages

Week starting	Weekly average (m)
3 October 2016	74.575 m
10 October 2016	74.515 m
17 October 2016	74.527 m
24 October 2016	74.517 m
31 October 2016	74.514 m
7 November 2016	74.507 m
14 November 2016	74.474 m
21 November 2016	74.461 m
28 November 2016	74.450 m
5 December 2016	74.463 m
12 December 2016	74.459 m
19 December 2016	74.448 m
26 December 2016	74.469 m
2 January 2017	74.521 m
9 January 2017	74.571 m
16 January 2017	74.647 m
23 January 2017	74.700 m
30 January 2017	74.747 m
6 February 2017	74.783 m
13 February 2017	74.837 m
20 February 2017	74.861 m
27 February 2017	74.942 m
6 March 2017	74.984 m
13 March 2017	75.018 m
20 March 2017	75.025 m
27 March 2017	75.056 m
3 April 2017	75.192 m
10 April 2017	75.339 m
17 April 2017	75.419 m
24 April 2017	75.486 m
1 May 2017	75.617 m
8 May 2017	75.799 m
15 May 2017	75.854 m
22 May 2017	75.859 m
29 May 2017	75.860 m
5 June 2017	75.834 m
12 June 2017	75.791 m
19 June 2017	75.784 m
26 June 2017	75.789 m
3 July 2017	75.749 m
10 July 2017	75.702 m
17 July 2017	75.669 m
24 July 2017	75.613 m
31 July 2017	75.567 m
7 August 2017	75.500 m
14 August 2017	75.415 m
21 August 2017	75.351 m
28 August 2017	75.214 m
4 September 2017	75.168 m
11 September 2017	75.083 m
18 September 2017	75.023 m
25 September 2017	74.977 m
2 October 2017	74.888 m
9 October 2017	74.892 m
16 October 2017	74.851 m
23 October 2017	74.798 m
30 October 2017	74.840 m
6 November 2017	74.888 m
13 November 2017	74.866 m
20 November 2017	74.856 m
27 November 2017	74.830 m
4 December 2017	74.794 m
11 December 2017	74.776 m
18 December 2017	74.742 m
25 December 2017	74.751 m
1 January 2018	74.768 m
8 January 2018	74.786 m
15 January 2018	74.854 m
22 January 2018	74.894 m
29 January 2018	74.906 m
5 February 2018	74.893 m
12 February 2018	74.869 m
19 February 2018	74.894 m
26 February 2018	74.961 m
5 March 2018	74.960 m
12 March 2018	74.954 m
19 March 2018	74.902 m
26 March 2018	74.874 m
2 April 2018	74.925 m
9 April 2018	74.949 m
16 April 2018	75.052 m
23 April 2018	75.111 m
30 April 2018	75.180 m
7 May 2018	75.241 m
14 May 2018	75.275 m
21 May 2018	75.284 m
28 May 2018	75.257 m
4 June 2018	75.261 m
11 June 2018	75.213 m
18 June 2018	75.186 m
25 June 2018	75.158 m
2 July 2018	75.137 m
9 July 2018	75.087 m
16 July 2018	75.022 m
23 July 2018	75.004 m
30 July 2018	74.965 m
6 August 2018	74.939 m
13 August 2018	74.910 m
20 August 2018	74.878 m
27 August 2018	74.845 m
3 September 2018	74.788 m
10 September 2018	74.736 m
17 September 2018	74.703 m
24 September 2018	74.660 m
1 October 2018	74.645 m
8 October 2018	74.661 m
15 October 2018	74.638 m
22 October 2018	74.580 m
29 October 2018	74.577 m
5 November 2018	74.603 m
12 November 2018	74.619 m
19 November 2018	74.613 m
26 November 2018	74.660 m
3 December 2018	74.702 m
10 December 2018	74.695 m
17 December 2018	74.710 m
24 December 2018	74.746 m
31 December 2018	74.783 m
7 January 2019	74.795 m
14 January 2019	74.819 m
21 January 2019	74.870 m
28 January 2019	74.900 m
4 February 2019	74.935 m
11 February 2019	74.981 m
18 February 2019	74.985 m
25 February 2019	74.992 m
4 March 2019	74.955 m
11 March 2019	74.957 m
18 March 2019	74.975 m
25 March 2019	74.978 m
1 April 2019	75.033 m
8 April 2019	75.057 m
15 April 2019	75.134 m
22 April 2019	75.287 m
29 April 2019	75.443 m
6 May 2019	75.573 m
13 May 2019	75.718 m
20 May 2019	75.810 m
27 May 2019	75.873 m
3 June 2019	75.905 m
10 June 2019	75.908 m
17 June 2019	75.903 m
24 June 2019	75.904 m
1 July 2019	75.866 m
8 July 2019	75.816 m
15 July 2019	75.797 m
22 July 2019	75.759 m
29 July 2019	75.694 m
5 August 2019	75.621 m
12 August 2019	75.528 m
19 August 2019	75.471 m
26 August 2019	75.380 m
2 September 2019	75.337 m
9 September 2019	75.247 m
16 September 2019	75.199 m
23 September 2019	75.161 m
30 September 2019	75.086 m
7 October 2019	75.040 m
14 October 2019	75.019 m
21 October 2019	74.993 m
28 October 2019	75.040 m
4 November 2019	75.060 m
11 November 2019	75.050 m
18 November 2019	75.010 m
25 November 2019	74.991 m
2 December 2019	74.984 m
9 December 2019	74.978 m
16 December 2019	75.007 m
23 December 2019	74.990 m
30 December 2019	75.007 m
6 January 2020	74.988 m
13 January 2020	75.046 m
20 January 2020	75.088 m
27 January 2020	75.144 m
3 February 2020	75.135 m
10 February 2020	75.131 m
17 February 2020	75.109 m
24 February 2020	75.089 m
2 March 2020	75.135 m
9 March 2020	75.170 m
16 March 2020	75.197 m
23 March 2020	75.205 m
30 March 2020	75.245 m
6 April 2020	75.286 m
13 April 2020	75.338 m
20 April 2020	75.352 m
27 April 2020	75.355 m
4 May 2020	75.390 m
11 May 2020	75.361 m
18 May 2020	75.339 m
25 May 2020	75.339 m
1 June 2020	75.337 m
8 June 2020	75.319 m
15 June 2020	75.266 m
22 June 2020	75.249 m
29 June 2020	75.229 m
6 July 2020	75.187 m
13 July 2020	75.183 m
20 July 2020	75.165 m
27 July 2020	75.131 m
3 August 2020	75.114 m
10 August 2020	75.059 m
17 August 2020	75.028 m
24 August 2020	75.008 m
31 August 2020	74.958 m
7 September 2020	74.898 m
14 September 2020	74.845 m
21 September 2020	74.768 m
28 September 2020	74.762 m
5 October 2020	74.732 m
12 October 2020	74.684 m
19 October 2020	74.678 m
26 October 2020	74.652 m
2 November 2020	74.620 m
9 November 2020	74.597 m
16 November 2020	74.584 m
23 November 2020	74.580 m
30 November 2020	74.612 m
7 December 2020	74.618 m
14 December 2020	74.601 m
21 December 2020	74.596 m
28 December 2020	74.653 m
4 January 2021	74.672 m
11 January 2021	74.626 m
18 January 2021	74.603 m
25 January 2021	74.580 m
1 February 2021	74.565 m
8 February 2021	74.534 m
15 February 2021	74.523 m
22 February 2021	74.501 m
1 March 2021	74.500 m
8 March 2021	74.475 m
15 March 2021	74.467 m
22 March 2021	74.488 m
29 March 2021	74.565 m
5 April 2021	74.575 m
12 April 2021	74.618 m
19 April 2021	74.649 m
26 April 2021	74.664 m
3 May 2021	74.714 m
10 May 2021	74.740 m
17 May 2021	74.732 m
24 May 2021	74.717 m
31 May 2021	74.699 m
7 June 2021	74.706 m
14 June 2021	74.713 m
21 June 2021	74.712 m
28 June 2021	74.731 m
5 July 2021	74.742 m
12 July 2021	74.803 m
19 July 2021	74.862 m
26 July 2021	74.876 m
2 August 2021	74.855 m
9 August 2021	74.855 m
16 August 2021	74.829 m
23 August 2021	74.845 m
30 August 2021	74.817 m
6 September 2021	74.817 m
13 September 2021	74.783 m
20 September 2021	74.757 m
27 September 2021	74.776 m
4 October 2021	74.752 m
11 October 2021	74.774 m
18 October 2021	74.783 m
25 October 2021	74.788 m
1 November 2021	74.840 m
8 November 2021	74.843 m
15 November 2021	74.875 m
22 November 2021	74.870 m
29 November 2021	74.849 m
6 December 2021	74.848 m
13 December 2021	74.871 m
20 December 2021	74.871 m
27 December 2021	74.870 m
3 January 2022	74.850 m
10 January 2022	74.842 m
17 January 2022	74.875 m
24 January 2022	74.884 m
31 January 2022	74.875 m
7 February 2022	74.858 m
14 February 2022	74.853 m
21 February 2022	74.921 m
28 February 2022	74.933 m
7 March 2022	74.958 m
14 March 2022	74.971 m
21 March 2022	75.032 m
28 March 2022	75.076 m
4 April 2022	75.083 m
11 April 2022	75.120 m
18 April 2022	75.155 m
25 April 2022	75.189 m
2 May 2022	75.194 m
9 May 2022	75.171 m
16 May 2022	75.163 m
23 May 2022	75.143 m
30 May 2022	75.153 m
6 June 2022	75.154 m
13 June 2022	75.145 m
20 June 2022	75.106 m
27 June 2022	75.058 m
4 July 2022	74.993 m
11 July 2022	74.940 m
18 July 2022	74.926 m
25 July 2022	74.899 m
1 August 2022	74.834 m
8 August 2022	74.786 m
15 August 2022	74.694 m
22 August 2022	74.685 m
29 August 2022	74.648 m
5 September 2022	74.573 m
12 September 2022	74.540 m
19 September 2022	74.517 m
26 September 2022	74.491 m
3 October 2022	74.421 m
10 October 2022	74.396 m
17 October 2022	74.399 m
24 October 2022	74.386 m
31 October 2022	74.372 m
7 November 2022	74.380 m
14 November 2022	74.408 m
21 November 2022	74.413 m
28 November 2022	74.432 m
5 December 2022	74.449 m
12 December 2022	74.447 m
19 December 2022	74.462 m
26 December 2022	74.503 m
2 January 2023	74.583 m
9 January 2023	74.643 m
16 January 2023	74.662 m
23 January 2023	74.699 m
30 January 2023	74.716 m
6 February 2023	74.732 m
13 February 2023	74.777 m
20 February 2023	74.804 m
27 February 2023	74.829 m
6 March 2023	74.857 m
13 March 2023	74.859 m
20 March 2023	74.899 m
27 March 2023	74.972 m
3 April 2023	75.057 m
10 April 2023	75.113 m
17 April 2023	75.157 m
24 April 2023	75.209 m
1 May 2023	75.326 m
8 May 2023	75.397 m
15 May 2023	75.384 m
22 May 2023	75.356 m
29 May 2023	75.298 m
5 June 2023	75.247 m
12 June 2023	75.249 m
19 June 2023	75.206 m
26 June 2023	75.201 m
3 July 2023	75.180 m
10 July 2023	75.146 m
17 July 2023	75.132 m
24 July 2023	75.113 m
31 July 2023	75.097 m
7 August 2023	75.086 m
14 August 2023	75.080 m
21 August 2023	75.037 m
28 August 2023	74.998 m
4 September 2023	74.965 m
11 September 2023	74.914 m
18 September 2023	74.837 m
25 September 2023	74.753 m
2 October 2023	74.734 m
9 October 2023	74.708 m
16 October 2023	74.638 m
23 October 2023	74.597 m
30 October 2023	74.555 m
6 November 2023	74.520 m
13 November 2023	74.484 m
20 November 2023	74.464 m
27 November 2023	74.445 m
4 December 2023	74.469 m
11 December 2023	74.470 m
18 December 2023	74.495 m
25 December 2023	74.526 m
1 January 2024	74.543 m
8 January 2024	74.559 m
15 January 2024	74.608 m
22 January 2024	74.637 m
29 January 2024	74.697 m
5 February 2024	74.710 m
12 February 2024	74.717 m
19 February 2024	74.702 m
26 February 2024	74.700 m
4 March 2024	74.708 m
11 March 2024	74.740 m
18 March 2024	74.759 m
25 March 2024	74.741 m
1 April 2024	74.761 m
8 April 2024	74.823 m
15 April 2024	74.912 m
22 April 2024	74.936 m
29 April 2024	74.945 m
6 May 2024	74.960 m
13 May 2024	74.959 m
20 May 2024	74.954 m
27 May 2024	74.954 m
3 June 2024	74.947 m
10 June 2024	74.946 m
17 June 2024	74.915 m
24 June 2024	74.943 m
1 July 2024	74.943 m
8 July 2024	74.961 m
15 July 2024	75.031 m
22 July 2024	75.003 m
29 July 2024	74.958 m
5 August 2024	74.922 m
12 August 2024	74.927 m
19 August 2024	74.925 m
26 August 2024	74.868 m
2 September 2024	74.844 m
9 September 2024	74.805 m
16 September 2024	74.749 m
23 September 2024	74.723 m
30 September 2024	no value
7 October 2024	no value
14 October 2024	no value
21 October 2024	no value
28 October 2024	74.485 m
4 November 2024	74.442 m
11 November 2024	74.409 m
18 November 2024	74.393 m
25 November 2024	74.386 m
2 December 2024	74.389 m
9 December 2024	74.409 m
16 December 2024	74.440 m
23 December 2024	74.437 m
30 December 2024	74.477 m
6 January 2025	74.494 m
13 January 2025	74.487 m
20 January 2025	74.474 m
27 January 2025	74.463 m
3 February 2025	74.459 m
10 February 2025	74.454 m
17 February 2025	74.463 m
24 February 2025	74.449 m
3 March 2025	74.471 m
10 March 2025	74.507 m
17 March 2025	74.593 m
24 March 2025	74.637 m
31 March 2025	74.700 m
7 April 2025	74.769 m
14 April 2025	74.806 m
21 April 2025	74.840 m
28 April 2025	74.870 m
5 May 2025	74.934 m
12 May 2025	74.978 m
19 May 2025	75.033 m
26 May 2025	75.086 m
2 June 2025	75.097 m
9 June 2025	75.098 m
16 June 2025	75.084 m
23 June 2025	75.085 m
30 June 2025	75.079 m
7 July 2025	75.053 m
14 July 2025	75.037 m
21 July 2025	74.996 m
28 July 2025	74.967 m
4 August 2025	74.902 m
11 August 2025	74.883 m
18 August 2025	74.839 m
25 August 2025	74.842 m
1 September 2025	74.788 m
8 September 2025	74.744 m
15 September 2025	74.700 m
22 September 2025	74.689 m
29 September 2025	74.639 m
6 October 2025	74.614 m
13 October 2025	74.549 m
20 October 2025	74.549 m
27 October 2025	74.503 m
3 November 2025	74.509 m
10 November 2025	74.496 m
17 November 2025	74.487 m
24 November 2025	74.469 m
1 December 2025	74.455 m
8 December 2025	74.432 m
15 December 2025	74.404 m
22 December 2025	74.421 m
29 December 2025	74.467 m
5 January 2026	74.505 m
12 January 2026	74.562 m
19 January 2026	74.580 m
26 January 2026	74.585 m
2 February 2026	74.557 m
9 February 2026	74.529 m
16 February 2026	74.513 m
23 February 2026	74.550 m
2 March 2026	74.543 m
9 March 2026	74.640 m
16 March 2026	74.744 m
23 March 2026	74.806 m
30 March 2026	74.901 m
6 April 2026	75.014 m
13 April 2026	75.106 m
20 April 2026	75.220 m
27 April 2026	75.291 m
4 May 2026	75.338 m
11 May 2026	75.365 m
18 May 2026	75.372 m
25 May 2026	75.408 m
1 June 2026	75.388 m
8 June 2026	75.372 m
15 June 2026	75.409 m
22 June 2026	75.403 m
29 June 2026	75.393 m
6 July 2026	75.375 m
13 July 2026	75.351 m
20 July 2026	75.331 m
27 July 2026	75.311 m
3 August 2026	75.334 m
10 August 2026	75.295 m
17 August 2026	75.242 m
24 August 2026	75.228 m
31 August 2026	no value
7 September 2026	75.191 m
14 September 2026	75.111 m
21 September 2026	74.996 m
28 September 2026	74.945 m

The whole record since 1882, monthly averages

Level
Our record

Monthly averages of Lake Ontario at Rochester from 1 July 1882 to 4 October 2026.

Table: The whole record since 1882, monthly averages

Month starting	Monthly average (m)
1 July 1882	75.173 m
1 August 1882	75.060 m
1 September 1882	74.943 m
1 October 1882	74.797 m
1 November 1882	74.650 m
1 December 1882	74.556 m
1 January 1883	74.487 m
1 February 1883	74.510 m
1 March 1883	74.575 m
1 April 1883	74.747 m
1 May 1883	74.935 m
1 June 1883	75.176 m
1 July 1883	75.315 m
1 August 1883	75.269 m
1 September 1883	75.135 m
1 October 1883	75.006 m
1 November 1883	74.930 m
1 December 1883	74.899 m
1 January 1884	74.884 m
1 February 1884	75.009 m
1 March 1884	75.161 m
1 April 1884	75.368 m
1 May 1884	75.407 m
1 June 1884	75.376 m
1 July 1884	75.331 m
1 August 1884	75.253 m
1 September 1884	75.101 m
1 October 1884	74.977 m
1 November 1884	74.818 m
1 December 1884	74.777 m
1 January 1885	74.768 m
1 February 1885	74.683 m
1 March 1885	74.610 m
1 April 1885	74.836 m
1 May 1885	75.076 m
1 June 1885	75.178 m
1 July 1885	75.221 m
1 August 1885	75.164 m
1 September 1885	75.106 m
1 October 1885	75.046 m
1 November 1885	75.054 m
1 December 1885	75.110 m
1 January 1886	75.223 m
1 February 1886	75.227 m
1 March 1886	75.231 m
1 April 1886	75.468 m
1 May 1886	75.538 m
1 June 1886	75.462 m
1 July 1886	75.344 m
1 August 1886	75.208 m
1 September 1886	75.081 m
1 October 1886	74.969 m
1 November 1886	74.882 m
1 December 1886	74.860 m
1 January 1887	74.796 m
1 February 1887	75.006 m
1 March 1887	75.138 m
1 April 1887	75.224 m
1 May 1887	75.385 m
1 June 1887	75.381 m
1 July 1887	75.294 m
1 August 1887	75.146 m
1 September 1887	74.964 m
1 October 1887	74.816 m
1 November 1887	74.667 m
1 December 1887	74.623 m
1 January 1888	74.584 m
1 February 1888	74.528 m
1 March 1888	74.593 m
1 April 1888	74.746 m
1 May 1888	74.810 m
1 June 1888	74.826 m
1 July 1888	74.807 m
1 August 1888	74.756 m
1 September 1888	74.685 m
1 October 1888	74.580 m
1 November 1888	74.542 m
1 December 1888	74.533 m
1 January 1889	74.568 m
1 February 1889	74.657 m
1 March 1889	74.680 m
1 April 1889	74.731 m
1 May 1889	74.807 m
1 June 1889	74.942 m
1 July 1889	74.985 m
1 August 1889	74.911 m
1 September 1889	74.744 m
1 October 1889	74.648 m
1 November 1889	74.550 m
1 December 1889	74.614 m
1 January 1890	74.802 m
1 February 1890	74.895 m
1 March 1890	74.992 m
1 April 1890	75.056 m
1 May 1890	75.173 m
1 June 1890	75.350 m
1 July 1890	75.329 m
1 August 1890	75.154 m
1 September 1890	75.013 m
1 October 1890	74.941 m
1 November 1890	74.927 m
1 December 1890	74.858 m
1 January 1891	74.758 m
1 February 1891	74.785 m
1 March 1891	74.952 m
1 April 1891	75.139 m
1 May 1891	75.117 m
1 June 1891	74.992 m
1 July 1891	74.896 m
1 August 1891	74.783 m
1 September 1891	74.656 m
1 October 1891	74.460 m
1 November 1891	74.247 m
1 December 1891	74.253 m
1 January 1892	74.315 m
1 February 1892	74.296 m
1 March 1892	74.293 m
1 April 1892	74.416 m
1 May 1892	74.490 m
1 June 1892	74.666 m
1 July 1892	74.826 m
1 August 1892	74.803 m
1 September 1892	74.721 m
1 October 1892	74.592 m
1 November 1892	74.493 m
1 December 1892	74.465 m
1 January 1893	74.457 m
1 February 1893	74.358 m
1 March 1893	74.474 m
1 April 1893	74.685 m
1 May 1893	75.061 m
1 June 1893	75.144 m
1 July 1893	75.077 m
1 August 1893	74.894 m
1 September 1893	74.807 m
1 October 1893	74.673 m
1 November 1893	74.521 m
1 December 1893	74.465 m
1 January 1894	74.561 m
1 February 1894	74.627 m
1 March 1894	74.741 m
1 April 1894	74.763 m
1 May 1894	74.812 m
1 June 1894	74.956 m
1 July 1894	74.895 m
1 August 1894	74.719 m
1 September 1894	74.564 m
1 October 1894	74.474 m
1 November 1894	74.390 m
1 December 1894	74.291 m
1 January 1895	74.284 m
1 February 1895	74.234 m
1 March 1895	74.236 m
1 April 1895	74.341 m
1 May 1895	74.409 m
1 June 1895	74.355 m
1 July 1895	74.276 m
1 August 1895	74.194 m
1 September 1895	74.131 m
1 October 1895	74.009 m
1 November 1895	73.939 m
1 December 1895	73.970 m
1 January 1896	74.037 m
1 February 1896	74.124 m
1 March 1896	74.192 m
1 April 1896	74.457 m
1 May 1896	74.545 m
1 June 1896	74.519 m
1 July 1896	74.451 m
1 August 1896	74.378 m
1 September 1896	74.261 m
1 October 1896	74.196 m
1 November 1896	74.115 m
1 December 1896	74.100 m
1 January 1897	74.047 m
1 February 1897	74.050 m
1 March 1897	74.185 m
1 April 1897	74.386 m
1 May 1897	74.557 m
1 June 1897	74.611 m
1 July 1897	74.592 m
1 August 1897	74.591 m
1 September 1897	74.451 m
1 October 1897	74.272 m
1 November 1897	74.210 m
1 December 1897	74.238 m
1 January 1898	74.303 m
1 February 1898	74.420 m
1 March 1898	74.539 m
1 April 1898	74.669 m
1 May 1898	74.734 m
1 June 1898	74.746 m
1 July 1898	74.662 m
1 August 1898	74.537 m
1 September 1898	74.425 m
1 October 1898	74.342 m
1 November 1898	74.325 m
1 December 1898	74.314 m
1 January 1899	74.351 m
1 February 1899	74.321 m
1 March 1899	74.409 m
1 April 1899	74.574 m
1 May 1899	74.696 m
1 June 1899	74.738 m
1 July 1899	74.677 m
1 August 1899	74.558 m
1 September 1899	74.399 m
1 October 1899	74.298 m
1 November 1899	74.262 m
1 December 1899	74.200 m
1 January 1900	74.241 m
1 February 1900	74.275 m
1 March 1900	74.407 m
1 April 1900	74.588 m
1 May 1900	74.694 m
1 June 1900	74.689 m
1 July 1900	74.646 m
1 August 1900	74.569 m
1 September 1900	74.435 m
1 October 1900	74.335 m
1 November 1900	74.272 m
1 December 1900	74.344 m
1 January 1901	74.330 m
1 February 1901	74.309 m
1 March 1901	74.228 m
1 April 1901	74.541 m
1 May 1901	74.674 m
1 June 1901	74.711 m
1 July 1901	74.656 m
1 August 1901	74.545 m
1 September 1901	74.448 m
1 October 1901	74.311 m
1 November 1901	74.188 m
1 December 1901	74.185 m
1 January 1902	74.242 m
1 February 1902	74.222 m
1 March 1902	74.393 m
1 April 1902	74.555 m
1 May 1902	74.582 m
1 June 1902	74.588 m
1 July 1902	74.715 m
1 August 1902	74.755 m
1 September 1902	74.631 m
1 October 1902	74.548 m
1 November 1902	74.438 m
1 December 1902	74.371 m
1 January 1903	74.377 m
1 February 1903	74.411 m
1 March 1903	74.591 m
1 April 1903	74.886 m
1 May 1903	74.898 m
1 June 1903	74.873 m
1 July 1903	74.900 m
1 August 1903	74.835 m
1 September 1903	74.749 m
1 October 1903	74.627 m
1 November 1903	74.519 m
1 December 1903	74.413 m
1 January 1904	74.342 m
1 February 1904	74.395 m
1 March 1904	74.579 m
1 April 1904	74.976 m
1 May 1904	75.181 m
1 June 1904	75.288 m
1 July 1904	75.311 m
1 August 1904	75.231 m
1 September 1904	75.104 m
1 October 1904	74.976 m
1 November 1904	no value
1 December 1904	74.674 m
1 January 1905	74.671 m
1 February 1905	74.566 m
1 March 1905	74.539 m
1 April 1905	74.704 m
1 May 1905	74.774 m
1 June 1905	74.900 m
1 July 1905	75.009 m
1 August 1905	75.003 m
1 September 1905	74.952 m
1 October 1905	74.849 m
1 November 1905	74.738 m
1 December 1905	74.698 m
1 January 1906	74.782 m
1 February 1906	74.779 m
1 March 1906	74.715 m
1 April 1906	74.777 m
1 May 1906	74.824 m
1 June 1906	74.853 m
1 July 1906	74.899 m
1 August 1906	74.807 m
1 September 1906	74.681 m
1 October 1906	74.623 m
1 November 1906	74.609 m
1 December 1906	74.646 m
1 January 1907	74.806 m
1 February 1907	74.875 m
1 March 1907	74.863 m
1 April 1907	74.968 m
1 May 1907	75.043 m
1 June 1907	75.061 m
1 July 1907	75.072 m
1 August 1907	74.986 m
1 September 1907	74.882 m
1 October 1907	74.838 m
1 November 1907	74.806 m
1 December 1907	74.503 m
1 January 1908	no value
1 February 1908	no value
1 March 1908	no value
1 April 1908	no value
1 May 1908	no value
1 June 1908	no value
1 July 1908	no value
1 August 1908	no value
1 September 1908	no value
1 October 1908	no value
1 November 1908	no value
1 December 1908	no value
1 January 1909	no value
1 February 1909	no value
1 March 1909	no value
1 April 1909	no value
1 May 1909	no value
1 June 1909	no value
1 July 1909	no value
1 August 1909	no value
1 September 1909	no value
1 October 1909	no value
1 November 1909	no value
1 December 1909	no value
1 January 1910	no value
1 February 1910	no value
1 March 1910	no value
1 April 1910	no value
1 May 1910	no value
1 June 1910	no value
1 July 1910	no value
1 August 1910	no value
1 September 1910	no value
1 October 1910	no value
1 November 1910	no value
1 December 1910	no value
1 January 1911	no value
1 February 1911	no value
1 March 1911	no value
1 April 1911	no value
1 May 1911	no value
1 June 1911	no value
1 July 1911	no value
1 August 1911	no value
1 September 1911	no value
1 October 1911	no value
1 November 1911	no value
1 December 1911	no value
1 January 1912	no value
1 February 1912	no value
1 March 1912	no value
1 April 1912	no value
1 May 1912	no value
1 June 1912	no value
1 July 1912	no value
1 August 1912	no value
1 September 1912	no value
1 October 1912	no value
1 November 1912	no value
1 December 1912	no value
1 January 1913	no value
1 February 1913	no value
1 March 1913	no value
1 April 1913	no value
1 May 1913	no value
1 June 1913	no value
1 July 1913	no value
1 August 1913	no value
1 September 1913	no value
1 October 1913	no value
1 November 1913	no value
1 December 1913	no value
1 January 1914	no value
1 February 1914	no value
1 March 1914	no value
1 April 1914	no value
1 May 1914	no value
1 June 1914	no value
1 July 1914	no value
1 August 1914	no value
1 September 1914	no value
1 October 1914	no value
1 November 1914	no value
1 December 1914	no value
1 January 1915	no value
1 February 1915	no value
1 March 1915	no value
1 April 1915	no value
1 May 1915	no value
1 June 1915	no value
1 July 1915	no value
1 August 1915	no value
1 September 1915	no value
1 October 1915	no value
1 November 1915	no value
1 December 1915	no value
1 January 1916	no value
1 February 1916	no value
1 March 1916	no value
1 April 1916	no value
1 May 1916	no value
1 June 1916	no value
1 July 1916	no value
1 August 1916	no value
1 September 1916	no value
1 October 1916	no value
1 November 1916	no value
1 December 1916	no value
1 January 1917	no value
1 February 1917	no value
1 March 1917	no value
1 April 1917	no value
1 May 1917	no value
1 June 1917	no value
1 July 1917	no value
1 August 1917	no value
1 September 1917	no value
1 October 1917	no value
1 November 1917	no value
1 December 1917	no value
1 January 1918	no value
1 February 1918	no value
1 March 1918	no value
1 April 1918	no value
1 May 1918	no value
1 June 1918	no value
1 July 1918	no value
1 August 1918	no value
1 September 1918	no value
1 October 1918	no value
1 November 1918	no value
1 December 1918	no value
1 January 1919	no value
1 February 1919	no value
1 March 1919	no value
1 April 1919	no value
1 May 1919	no value
1 June 1919	no value
1 July 1919	no value
1 August 1919	no value
1 September 1919	no value
1 October 1919	no value
1 November 1919	no value
1 December 1919	no value
1 January 1920	no value
1 February 1920	no value
1 March 1920	no value
1 April 1920	no value
1 May 1920	no value
1 June 1920	no value
1 July 1920	no value
1 August 1920	no value
1 September 1920	no value
1 October 1920	no value
1 November 1920	no value
1 December 1920	no value
1 January 1921	no value
1 February 1921	no value
1 March 1921	no value
1 April 1921	no value
1 May 1921	no value
1 June 1921	no value
1 July 1921	no value
1 August 1921	no value
1 September 1921	no value
1 October 1921	no value
1 November 1921	no value
1 December 1921	no value
1 January 1922	no value
1 February 1922	no value
1 March 1922	no value
1 April 1922	no value
1 May 1922	no value
1 June 1922	no value
1 July 1922	no value
1 August 1922	no value
1 September 1922	no value
1 October 1922	no value
1 November 1922	no value
1 December 1922	no value
1 January 1923	no value
1 February 1923	no value
1 March 1923	no value
1 April 1923	no value
1 May 1923	no value
1 June 1923	no value
1 July 1923	no value
1 August 1923	no value
1 September 1923	no value
1 October 1923	no value
1 November 1923	no value
1 December 1923	no value
1 January 1924	no value
1 February 1924	no value
1 March 1924	no value
1 April 1924	no value
1 May 1924	no value
1 June 1924	no value
1 July 1924	no value
1 August 1924	no value
1 September 1924	no value
1 October 1924	no value
1 November 1924	no value
1 December 1924	no value
1 January 1925	no value
1 February 1925	no value
1 March 1925	no value
1 April 1925	no value
1 May 1925	no value
1 June 1925	no value
1 July 1925	no value
1 August 1925	no value
1 September 1925	no value
1 October 1925	no value
1 November 1925	no value
1 December 1925	no value
1 January 1926	no value
1 February 1926	no value
1 March 1926	no value
1 April 1926	no value
1 May 1926	no value
1 June 1926	no value
1 July 1926	no value
1 August 1926	no value
1 September 1926	no value
1 October 1926	no value
1 November 1926	no value
1 December 1926	no value
1 January 1927	no value
1 February 1927	no value
1 March 1927	no value
1 April 1927	no value
1 May 1927	no value
1 June 1927	no value
1 July 1927	no value
1 August 1927	no value
1 September 1927	no value
1 October 1927	no value
1 November 1927	no value
1 December 1927	no value
1 January 1928	no value
1 February 1928	no value
1 March 1928	no value
1 April 1928	no value
1 May 1928	no value
1 June 1928	no value
1 July 1928	no value
1 August 1928	no value
1 September 1928	no value
1 October 1928	no value
1 November 1928	no value
1 December 1928	no value
1 January 1929	no value
1 February 1929	no value
1 March 1929	no value
1 April 1929	no value
1 May 1929	no value
1 June 1929	no value
1 July 1929	no value
1 August 1929	no value
1 September 1929	no value
1 October 1929	no value
1 November 1929	no value
1 December 1929	no value
1 January 1930	no value
1 February 1930	no value
1 March 1930	no value
1 April 1930	no value
1 May 1930	no value
1 June 1930	no value
1 July 1930	no value
1 August 1930	no value
1 September 1930	no value
1 October 1930	no value
1 November 1930	no value
1 December 1930	no value
1 January 1931	no value
1 February 1931	no value
1 March 1931	no value
1 April 1931	no value
1 May 1931	no value
1 June 1931	no value
1 July 1931	no value
1 August 1931	no value
1 September 1931	no value
1 October 1931	no value
1 November 1931	no value
1 December 1931	no value
1 January 1932	no value
1 February 1932	no value
1 March 1932	no value
1 April 1932	no value
1 May 1932	no value
1 June 1932	no value
1 July 1932	no value
1 August 1932	no value
1 September 1932	no value
1 October 1932	no value
1 November 1932	no value
1 December 1932	no value
1 January 1933	no value
1 February 1933	no value
1 March 1933	no value
1 April 1933	no value
1 May 1933	no value
1 June 1933	no value
1 July 1933	no value
1 August 1933	no value
1 September 1933	no value
1 October 1933	no value
1 November 1933	no value
1 December 1933	no value
1 January 1934	no value
1 February 1934	no value
1 March 1934	no value
1 April 1934	no value
1 May 1934	no value
1 June 1934	no value
1 July 1934	no value
1 August 1934	no value
1 September 1934	no value
1 October 1934	no value
1 November 1934	no value
1 December 1934	no value
1 January 1935	no value
1 February 1935	no value
1 March 1935	no value
1 April 1935	no value
1 May 1935	74.109 m
1 June 1935	74.180 m
1 July 1935	74.232 m
1 August 1935	74.156 m
1 September 1935	74.034 m
1 October 1935	no value
1 November 1935	no value
1 December 1935	no value
1 January 1936	no value
1 February 1936	no value
1 March 1936	no value
1 April 1936	no value
1 May 1936	no value
1 June 1936	no value
1 July 1936	no value
1 August 1936	no value
1 September 1936	no value
1 October 1936	no value
1 November 1936	no value
1 December 1936	no value
1 January 1937	no value
1 February 1937	no value
1 March 1937	no value
1 April 1937	no value
1 May 1937	no value
1 June 1937	no value
1 July 1937	no value
1 August 1937	no value
1 September 1937	no value
1 October 1937	no value
1 November 1937	no value
1 December 1937	no value
1 January 1938	no value
1 February 1938	no value
1 March 1938	no value
1 April 1938	no value
1 May 1938	no value
1 June 1938	no value
1 July 1938	no value
1 August 1938	no value
1 September 1938	no value
1 October 1938	no value
1 November 1938	no value
1 December 1938	no value
1 January 1939	no value
1 February 1939	no value
1 March 1939	no value
1 April 1939	no value
1 May 1939	no value
1 June 1939	no value
1 July 1939	no value
1 August 1939	no value
1 September 1939	no value
1 October 1939	no value
1 November 1939	no value
1 December 1939	no value
1 January 1940	no value
1 February 1940	no value
1 March 1940	no value
1 April 1940	no value
1 May 1940	no value
1 June 1940	no value
1 July 1940	no value
1 August 1940	no value
1 September 1940	no value
1 October 1940	no value
1 November 1940	no value
1 December 1940	no value
1 January 1941	no value
1 February 1941	no value
1 March 1941	no value
1 April 1941	no value
1 May 1941	no value
1 June 1941	no value
1 July 1941	no value
1 August 1941	no value
1 September 1941	no value
1 October 1941	no value
1 November 1941	no value
1 December 1941	no value
1 January 1942	no value
1 February 1942	no value
1 March 1942	no value
1 April 1942	no value
1 May 1942	no value
1 June 1942	no value
1 July 1942	no value
1 August 1942	no value
1 September 1942	no value
1 October 1942	no value
1 November 1942	no value
1 December 1942	no value
1 January 1943	no value
1 February 1943	no value
1 March 1943	no value
1 April 1943	no value
1 May 1943	no value
1 June 1943	no value
1 July 1943	no value
1 August 1943	no value
1 September 1943	no value
1 October 1943	no value
1 November 1943	no value
1 December 1943	no value
1 January 1944	no value
1 February 1944	no value
1 March 1944	no value
1 April 1944	no value
1 May 1944	no value
1 June 1944	no value
1 July 1944	no value
1 August 1944	no value
1 September 1944	no value
1 October 1944	no value
1 November 1944	no value
1 December 1944	no value
1 January 1945	no value
1 February 1945	no value
1 March 1945	no value
1 April 1945	no value
1 May 1945	no value
1 June 1945	no value
1 July 1945	no value
1 August 1945	no value
1 September 1945	no value
1 October 1945	no value
1 November 1945	no value
1 December 1945	no value
1 January 1946	no value
1 February 1946	no value
1 March 1946	no value
1 April 1946	no value
1 May 1946	no value
1 June 1946	no value
1 July 1946	no value
1 August 1946	no value
1 September 1946	no value
1 October 1946	no value
1 November 1946	no value
1 December 1946	no value
1 January 1947	no value
1 February 1947	no value
1 March 1947	no value
1 April 1947	no value
1 May 1947	no value
1 June 1947	no value
1 July 1947	no value
1 August 1947	no value
1 September 1947	no value
1 October 1947	no value
1 November 1947	no value
1 December 1947	no value
1 January 1948	no value
1 February 1948	no value
1 March 1948	no value
1 April 1948	no value
1 May 1948	no value
1 June 1948	no value
1 July 1948	no value
1 August 1948	no value
1 September 1948	no value
1 October 1948	no value
1 November 1948	no value
1 December 1948	no value
1 January 1949	no value
1 February 1949	no value
1 March 1949	no value
1 April 1949	no value
1 May 1949	no value
1 June 1949	no value
1 July 1949	no value
1 August 1949	no value
1 September 1949	no value
1 October 1949	no value
1 November 1949	no value
1 December 1949	no value
1 January 1950	no value
1 February 1950	no value
1 March 1950	no value
1 April 1950	no value
1 May 1950	no value
1 June 1950	no value
1 July 1950	no value
1 August 1950	no value
1 September 1950	no value
1 October 1950	no value
1 November 1950	no value
1 December 1950	no value
1 January 1951	no value
1 February 1951	no value
1 March 1951	no value
1 April 1951	no value
1 May 1951	no value
1 June 1951	no value
1 July 1951	no value
1 August 1951	no value
1 September 1951	no value
1 October 1951	no value
1 November 1951	no value
1 December 1951	no value
1 January 1952	no value
1 February 1952	no value
1 March 1952	no value
1 April 1952	no value
1 May 1952	no value
1 June 1952	no value
1 July 1952	no value
1 August 1952	no value
1 September 1952	no value
1 October 1952	no value
1 November 1952	no value
1 December 1952	no value
1 January 1953	74.935 m
1 February 1953	no value
1 March 1953	74.999 m
1 April 1953	75.163 m
1 May 1953	75.298 m
1 June 1953	75.338 m
1 July 1953	75.238 m
1 August 1953	75.113 m
1 September 1953	74.982 m
1 October 1953	74.821 m
1 November 1953	74.685 m
1 December 1953	74.649 m
1 January 1954	74.619 m
1 February 1954	74.676 m
1 March 1954	74.893 m
1 April 1954	75.093 m
1 May 1954	75.322 m
1 June 1954	75.294 m
1 July 1954	75.177 m
1 August 1954	75.023 m
1 September 1954	74.922 m
1 October 1954	74.903 m
1 November 1954	74.921 m
1 December 1954	74.946 m
1 January 1955	75.021 m
1 February 1955	74.973 m
1 March 1955	75.179 m
1 April 1955	75.439 m
1 May 1955	75.492 m
1 June 1955	75.430 m
1 July 1955	75.267 m
1 August 1955	75.132 m
1 September 1955	74.976 m
1 October 1955	74.943 m
1 November 1955	74.978 m
1 December 1955	74.910 m
1 January 1956	74.785 m
1 February 1956	74.689 m
1 March 1956	74.761 m
1 April 1956	74.948 m
1 May 1956	75.228 m
1 June 1956	75.296 m
1 July 1956	75.191 m
1 August 1956	75.059 m
1 September 1956	74.991 m
1 October 1956	74.814 m
1 November 1956	74.677 m
1 December 1956	74.584 m
1 January 1957	74.542 m
1 February 1957	74.535 m
1 March 1957	74.594 m
1 April 1957	74.678 m
1 May 1957	74.784 m
1 June 1957	74.844 m
1 July 1957	74.882 m
1 August 1957	74.781 m
1 September 1957	74.649 m
1 October 1957	74.508 m
1 November 1957	74.374 m
1 December 1957	74.364 m
1 January 1958	74.425 m
1 February 1958	74.390 m
1 March 1958	74.451 m
1 April 1958	74.548 m
1 May 1958	74.607 m
1 June 1958	74.595 m
1 July 1958	74.552 m
1 August 1958	74.470 m
1 September 1958	74.394 m
1 October 1958	74.321 m
1 November 1958	74.243 m
1 December 1958	74.180 m
1 January 1959	74.142 m
1 February 1959	74.311 m
1 March 1959	74.457 m
1 April 1959	no value
1 May 1959	74.860 m
1 June 1959	74.808 m
1 July 1959	74.696 m
1 August 1959	74.512 m
1 September 1959	74.337 m
1 October 1959	74.254 m
1 November 1959	74.215 m
1 December 1959	74.299 m
1 January 1960	74.422 m
1 February 1960	74.535 m
1 March 1960	74.568 m
1 April 1960	74.870 m
1 May 1960	75.109 m
1 June 1960	75.150 m
1 July 1960	75.015 m
1 August 1960	74.809 m
1 September 1960	74.613 m
1 October 1960	74.503 m
1 November 1960	74.488 m
1 December 1960	74.417 m
1 January 1961	74.311 m
1 February 1961	74.207 m
1 March 1961	74.422 m
1 April 1961	74.654 m
1 May 1961	74.932 m
1 June 1961	75.001 m
1 July 1961	74.955 m
1 August 1961	74.823 m
1 September 1961	74.700 m
1 October 1961	74.515 m
1 November 1961	74.400 m
1 December 1961	74.374 m
1 January 1962	74.319 m
1 February 1962	74.266 m
1 March 1962	74.312 m
1 April 1962	74.614 m
1 May 1962	74.839 m
1 June 1962	74.929 m
1 July 1962	74.878 m
1 August 1962	74.843 m
1 September 1962	74.737 m
1 October 1962	74.688 m
1 November 1962	74.620 m
1 December 1962	74.598 m
1 January 1963	74.494 m
1 February 1963	74.331 m
1 March 1963	74.301 m
1 April 1963	74.650 m
1 May 1963	74.922 m
1 June 1963	75.059 m
1 July 1963	75.025 m
1 August 1963	74.962 m
1 September 1963	74.790 m
1 October 1963	74.578 m
1 November 1963	74.411 m
1 December 1963	74.340 m
1 January 1964	74.179 m
1 February 1964	74.026 m
1 March 1964	74.023 m
1 April 1964	74.253 m
1 May 1964	74.541 m
1 June 1964	74.667 m
1 July 1964	74.678 m
1 August 1964	74.565 m
1 September 1964	74.430 m
1 October 1964	74.198 m
1 November 1964	73.995 m
1 December 1964	73.858 m
1 January 1965	73.831 m
1 February 1965	73.878 m
1 March 1965	74.040 m
1 April 1965	74.240 m
1 May 1965	74.502 m
1 June 1965	74.632 m
1 July 1965	74.710 m
1 August 1965	74.654 m
1 September 1965	74.584 m
1 October 1965	74.537 m
1 November 1965	74.522 m
1 December 1965	74.582 m
1 January 1966	74.561 m
1 February 1966	74.524 m
1 March 1966	74.648 m
1 April 1966	74.735 m
1 May 1966	74.789 m
1 June 1966	74.903 m
1 July 1966	74.903 m
1 August 1966	74.816 m
1 September 1966	74.717 m
1 October 1966	74.585 m
1 November 1966	74.483 m
1 December 1966	74.566 m
1 January 1967	74.591 m
1 February 1967	74.598 m
1 March 1967	74.532 m
1 April 1967	74.767 m
1 May 1967	74.968 m
1 June 1967	75.079 m
1 July 1967	75.151 m
1 August 1967	75.105 m
1 September 1967	74.969 m
1 October 1967	74.903 m
1 November 1967	74.874 m
1 December 1967	74.769 m
1 January 1968	74.676 m
1 February 1968	74.707 m
1 March 1968	74.704 m
1 April 1968	74.898 m
1 May 1968	74.899 m
1 June 1968	75.021 m
1 July 1968	75.094 m
1 August 1968	74.987 m
1 September 1968	74.856 m
1 October 1968	74.661 m
1 November 1968	74.539 m
1 December 1968	74.611 m
1 January 1969	74.626 m
1 February 1969	74.694 m
1 March 1969	74.635 m
1 April 1969	74.838 m
1 May 1969	75.024 m
1 June 1969	75.152 m
1 July 1969	75.083 m
1 August 1969	74.935 m
1 September 1969	74.682 m
1 October 1969	74.491 m
1 November 1969	74.443 m
1 December 1969	74.443 m
1 January 1970	74.421 m
1 February 1970	74.438 m
1 March 1970	74.454 m
1 April 1970	74.680 m
1 May 1970	74.881 m
1 June 1970	74.937 m
1 July 1970	74.985 m
1 August 1970	74.899 m
1 September 1970	74.728 m
1 October 1970	74.622 m
1 November 1970	74.554 m
1 December 1970	74.562 m
1 January 1971	74.579 m
1 February 1971	74.570 m
1 March 1971	74.710 m
1 April 1971	74.872 m
1 May 1971	75.008 m
1 June 1971	74.974 m
1 July 1971	74.934 m
1 August 1971	74.822 m
1 September 1971	74.739 m
1 October 1971	74.582 m
1 November 1971	74.438 m
1 December 1971	74.429 m
1 January 1972	74.536 m
1 February 1972	74.624 m
1 March 1972	74.720 m
1 April 1972	74.939 m
1 May 1972	75.195 m
1 June 1972	75.250 m
1 July 1972	75.344 m
1 August 1972	75.246 m
1 September 1972	75.014 m
1 October 1972	74.781 m
1 November 1972	74.701 m
1 December 1972	74.800 m
1 January 1973	75.048 m
1 February 1973	75.209 m
1 March 1973	75.323 m
1 April 1973	75.646 m
1 May 1973	75.723 m
1 June 1973	75.688 m
1 July 1973	75.521 m
1 August 1973	75.267 m
1 September 1973	75.008 m
1 October 1973	74.780 m
1 November 1973	74.639 m
1 December 1973	74.635 m
1 January 1974	74.832 m
1 February 1974	75.015 m
1 March 1974	75.107 m
1 April 1974	75.287 m
1 May 1974	75.504 m
1 June 1974	75.585 m
1 July 1974	75.501 m
1 August 1974	75.249 m
1 September 1974	74.961 m
1 October 1974	74.682 m
1 November 1974	74.521 m
1 December 1974	74.533 m
1 January 1975	74.559 m
1 February 1975	74.704 m
1 March 1975	74.844 m
1 April 1975	75.011 m
1 May 1975	75.094 m
1 June 1975	75.090 m
1 July 1975	74.984 m
1 August 1975	74.829 m
1 September 1975	74.725 m
1 October 1975	74.694 m
1 November 1975	74.594 m
1 December 1975	74.556 m
1 January 1976	74.617 m
1 February 1976	74.711 m
1 March 1976	75.068 m
1 April 1976	75.375 m
1 May 1976	75.539 m
1 June 1976	75.537 m
1 July 1976	75.429 m
1 August 1976	75.219 m
1 September 1976	75.001 m
1 October 1976	74.836 m
1 November 1976	74.671 m
1 December 1976	74.541 m
1 January 1977	74.506 m
1 February 1977	74.450 m
1 March 1977	74.618 m
1 April 1977	74.856 m
1 May 1977	74.895 m
1 June 1977	74.827 m
1 July 1977	74.856 m
1 August 1977	74.860 m
1 September 1977	74.808 m
1 October 1977	74.837 m
1 November 1977	74.749 m
1 December 1977	74.852 m
1 January 1978	75.090 m
1 February 1978	75.128 m
1 March 1978	74.988 m
1 April 1978	75.227 m
1 May 1978	75.323 m
1 June 1978	75.231 m
1 July 1978	75.045 m
1 August 1978	74.889 m
1 September 1978	74.722 m
1 October 1978	74.580 m
1 November 1978	74.437 m
1 December 1978	74.430 m
1 January 1979	74.591 m
1 February 1979	74.650 m
1 March 1979	74.767 m
1 April 1979	75.047 m
1 May 1979	75.165 m
1 June 1979	75.130 m
1 July 1979	75.023 m
1 August 1979	74.921 m
1 September 1979	74.856 m
1 October 1979	74.753 m
1 November 1979	74.604 m
1 December 1979	74.588 m
1 January 1980	74.610 m
1 February 1980	74.620 m
1 March 1980	74.618 m
1 April 1980	75.001 m
1 May 1980	75.146 m
1 June 1980	75.135 m
1 July 1980	75.117 m
1 August 1980	75.053 m
1 September 1980	74.881 m
1 October 1980	74.655 m
1 November 1980	74.553 m
1 December 1980	74.537 m
1 January 1981	74.511 m
1 February 1981	74.504 m
1 March 1981	74.747 m
1 April 1981	74.741 m
1 May 1981	74.842 m
1 June 1981	74.950 m
1 July 1981	75.006 m
1 August 1981	74.984 m
1 September 1981	74.933 m
1 October 1981	74.795 m
1 November 1981	74.767 m
1 December 1981	74.653 m
1 January 1982	74.590 m
1 February 1982	74.594 m
1 March 1982	74.615 m
1 April 1982	74.920 m
1 May 1982	75.000 m
1 June 1982	75.069 m
1 July 1982	75.028 m
1 August 1982	74.860 m
1 September 1982	74.702 m
1 October 1982	74.580 m
1 November 1982	74.524 m
1 December 1982	74.531 m
1 January 1983	74.643 m
1 February 1983	74.761 m
1 March 1983	74.770 m
1 April 1983	74.870 m
1 May 1983	75.145 m
1 June 1983	75.173 m
1 July 1983	75.013 m
1 August 1983	74.918 m
1 September 1983	74.786 m
1 October 1983	74.628 m
1 November 1983	74.524 m
1 December 1983	74.610 m
1 January 1984	74.722 m
1 February 1984	74.763 m
1 March 1984	74.904 m
1 April 1984	75.118 m
1 May 1984	75.304 m
1 June 1984	75.308 m
1 July 1984	75.207 m
1 August 1984	75.018 m
1 September 1984	74.819 m
1 October 1984	74.621 m
1 November 1984	74.517 m
1 December 1984	74.483 m
1 January 1985	74.652 m
1 February 1985	74.619 m
1 March 1985	74.860 m
1 April 1985	75.085 m
1 May 1985	75.166 m
1 June 1985	75.174 m
1 July 1985	75.102 m
1 August 1985	74.920 m
1 September 1985	74.789 m
1 October 1985	74.625 m
1 November 1985	74.656 m
1 December 1985	74.777 m
1 January 1986	74.904 m
1 February 1986	74.972 m
1 March 1986	75.059 m
1 April 1986	75.287 m
1 May 1986	75.287 m
1 June 1986	75.338 m
1 July 1986	75.329 m
1 August 1986	75.254 m
1 September 1986	75.107 m
1 October 1986	75.160 m
1 November 1986	75.036 m
1 December 1986	75.016 m
1 January 1987	75.000 m
1 February 1987	75.044 m
1 March 1987	74.990 m
1 April 1987	75.205 m
1 May 1987	75.133 m
1 June 1987	75.023 m
1 July 1987	74.927 m
1 August 1987	74.746 m
1 September 1987	74.614 m
1 October 1987	74.514 m
1 November 1987	74.438 m
1 December 1987	74.543 m
1 January 1988	74.528 m
1 February 1988	74.590 m
1 March 1988	74.587 m
1 April 1988	74.747 m
1 May 1988	74.882 m
1 June 1988	74.925 m
1 July 1988	74.869 m
1 August 1988	74.797 m
1 September 1988	74.677 m
1 October 1988	74.565 m
1 November 1988	74.540 m
1 December 1988	74.458 m
1 January 1989	74.419 m
1 February 1989	74.430 m
1 March 1989	74.388 m
1 April 1989	74.701 m
1 May 1989	74.994 m
1 June 1989	75.223 m
1 July 1989	75.196 m
1 August 1989	75.020 m
1 September 1989	74.846 m
1 October 1989	74.699 m
1 November 1989	74.651 m
1 December 1989	74.580 m
1 January 1990	74.540 m
1 February 1990	74.625 m
1 March 1990	74.769 m
1 April 1990	74.987 m
1 May 1990	75.109 m
1 June 1990	75.139 m
1 July 1990	75.003 m
1 August 1990	74.864 m
1 September 1990	74.698 m
1 October 1990	74.636 m
1 November 1990	74.616 m
1 December 1990	74.645 m
1 January 1991	74.924 m
1 February 1991	74.989 m
1 March 1991	75.052 m
1 April 1991	75.186 m
1 May 1991	75.281 m
1 June 1991	75.178 m
1 July 1991	75.032 m
1 August 1991	74.848 m
1 September 1991	74.638 m
1 October 1991	74.475 m
1 November 1991	74.346 m
1 December 1991	74.383 m
1 January 1992	74.444 m
1 February 1992	74.444 m
1 March 1992	74.557 m
1 April 1992	74.844 m
1 May 1992	75.106 m
1 June 1992	75.051 m
1 July 1992	74.997 m
1 August 1992	75.027 m
1 September 1992	74.974 m
1 October 1992	74.851 m
1 November 1992	74.807 m
1 December 1992	74.857 m
1 January 1993	75.035 m
1 February 1993	75.155 m
1 March 1993	75.141 m
1 April 1993	75.424 m
1 May 1993	75.605 m
1 June 1993	75.455 m
1 July 1993	75.240 m
1 August 1993	75.000 m
1 September 1993	74.750 m
1 October 1993	74.587 m
1 November 1993	74.506 m
1 December 1993	74.557 m
1 January 1994	74.551 m
1 February 1994	74.515 m
1 March 1994	74.549 m
1 April 1994	74.870 m
1 May 1994	75.097 m
1 June 1994	75.076 m
1 July 1994	75.021 m
1 August 1994	74.928 m
1 September 1994	74.779 m
1 October 1994	74.614 m
1 November 1994	74.530 m
1 December 1994	74.494 m
1 January 1995	74.538 m
1 February 1995	74.718 m
1 March 1995	74.711 m
1 April 1995	74.693 m
1 May 1995	74.798 m
1 June 1995	74.896 m
1 July 1995	74.903 m
1 August 1995	74.873 m
1 September 1995	74.700 m
1 October 1995	74.642 m
1 November 1995	74.691 m
1 December 1995	74.649 m
1 January 1996	74.608 m
1 February 1996	74.749 m
1 March 1996	74.764 m
1 April 1996	74.813 m
1 May 1996	75.125 m
1 June 1996	75.228 m
1 July 1996	75.157 m
1 August 1996	74.982 m
1 September 1996	74.811 m
1 October 1996	74.729 m
1 November 1996	74.712 m
1 December 1996	74.722 m
1 January 1997	74.805 m
1 February 1997	74.891 m
1 March 1997	75.010 m
1 April 1997	75.166 m
1 May 1997	75.327 m
1 June 1997	75.298 m
1 July 1997	75.189 m
1 August 1997	75.007 m
1 September 1997	74.866 m
1 October 1997	74.735 m
1 November 1997	74.627 m
1 December 1997	74.587 m
1 January 1998	74.816 m
1 February 1998	75.050 m
1 March 1998	75.144 m
1 April 1998	75.414 m
1 May 1998	75.350 m
1 June 1998	75.185 m
1 July 1998	75.145 m
1 August 1998	74.921 m
1 September 1998	74.733 m
1 October 1998	74.504 m
1 November 1998	74.333 m
1 December 1998	74.280 m
1 January 1999	74.308 m
1 February 1999	74.426 m
1 March 1999	74.500 m
1 April 1999	74.627 m
1 May 1999	74.701 m
1 June 1999	74.774 m
1 July 1999	74.811 m
1 August 1999	74.727 m
1 September 1999	74.580 m
1 October 1999	74.468 m
1 November 1999	74.432 m
1 December 1999	74.467 m
1 January 2000	74.503 m
1 February 2000	74.452 m
1 March 2000	74.583 m
1 April 2000	74.818 m
1 May 2000	75.098 m
1 June 2000	75.254 m
1 July 2000	75.238 m
1 August 2000	75.053 m
1 September 2000	74.812 m
1 October 2000	74.609 m
1 November 2000	74.458 m
1 December 2000	74.466 m
1 January 2001	74.492 m
1 February 2001	74.548 m
1 March 2001	74.642 m
1 April 2001	74.835 m
1 May 2001	74.921 m
1 June 2001	74.991 m
1 July 2001	74.964 m
1 August 2001	74.816 m
1 September 2001	74.626 m
1 October 2001	74.520 m
1 November 2001	74.467 m
1 December 2001	74.513 m
1 January 2002	74.556 m
1 February 2002	74.675 m
1 March 2002	74.782 m
1 April 2002	74.974 m
1 May 2002	75.213 m
1 June 2002	75.324 m
1 July 2002	75.188 m
1 August 2002	74.909 m
1 September 2002	74.644 m
1 October 2002	74.485 m
1 November 2002	74.358 m
1 December 2002	74.315 m
1 January 2003	74.333 m
1 February 2003	74.293 m
1 March 2003	74.346 m
1 April 2003	74.724 m
1 May 2003	74.946 m
1 June 2003	75.123 m
1 July 2003	75.053 m
1 August 2003	74.987 m
1 September 2003	74.742 m
1 October 2003	74.633 m
1 November 2003	74.638 m
1 December 2003	74.731 m
1 January 2004	74.836 m
1 February 2004	74.751 m
1 March 2004	74.721 m
1 April 2004	74.889 m
1 May 2004	75.036 m
1 June 2004	75.144 m
1 July 2004	75.092 m
1 August 2004	75.020 m
1 September 2004	74.947 m
1 October 2004	74.696 m
1 November 2004	74.498 m
1 December 2004	74.549 m
1 January 2005	74.753 m
1 February 2005	74.867 m
1 March 2005	74.853 m
1 April 2005	75.046 m
1 May 2005	75.122 m
1 June 2005	75.029 m
1 July 2005	74.951 m
1 August 2005	74.801 m
1 September 2005	74.700 m
1 October 2005	74.614 m
1 November 2005	74.587 m
1 December 2005	74.560 m
1 January 2006	74.631 m
1 February 2006	74.867 m
1 March 2006	74.827 m
1 April 2006	74.829 m
1 May 2006	74.842 m
1 June 2006	74.892 m
1 July 2006	74.980 m
1 August 2006	74.940 m
1 September 2006	74.804 m
1 October 2006	74.738 m
1 November 2006	74.782 m
1 December 2006	74.823 m
1 January 2007	74.978 m
1 February 2007	74.976 m
1 March 2007	74.840 m
1 April 2007	75.007 m
1 May 2007	75.049 m
1 June 2007	74.986 m
1 July 2007	74.860 m
1 August 2007	74.704 m
1 September 2007	74.551 m
1 October 2007	74.416 m
1 November 2007	74.303 m
1 December 2007	74.320 m
1 January 2008	74.554 m
1 February 2008	74.745 m
1 March 2008	74.872 m
1 April 2008	75.170 m
1 May 2008	75.298 m
1 June 2008	75.183 m
1 July 2008	75.121 m
1 August 2008	75.060 m
1 September 2008	74.804 m
1 October 2008	74.603 m
1 November 2008	74.504 m
1 December 2008	74.547 m
1 January 2009	74.770 m
1 February 2009	74.826 m
1 March 2009	74.930 m
1 April 2009	75.121 m
1 May 2009	75.195 m
1 June 2009	75.167 m
1 July 2009	75.128 m
1 August 2009	75.038 m
1 September 2009	74.785 m
1 October 2009	74.608 m
1 November 2009	74.507 m
1 December 2009	74.490 m
1 January 2010	74.516 m
1 February 2010	74.542 m
1 March 2010	74.550 m
1 April 2010	74.655 m
1 May 2010	74.710 m
1 June 2010	74.842 m
1 July 2010	74.971 m
1 August 2010	74.892 m
1 September 2010	74.711 m
1 October 2010	74.615 m
1 November 2010	74.495 m
1 December 2010	74.525 m
1 January 2011	74.485 m
1 February 2011	74.406 m
1 March 2011	74.609 m
1 April 2011	74.846 m
1 May 2011	75.219 m
1 June 2011	75.327 m
1 July 2011	75.139 m
1 August 2011	74.944 m
1 September 2011	74.756 m
1 October 2011	74.664 m
1 November 2011	74.572 m
1 December 2011	74.617 m
1 January 2012	74.795 m
1 February 2012	74.986 m
1 March 2012	74.966 m
1 April 2012	74.920 m
1 May 2012	74.911 m
1 June 2012	74.899 m
1 July 2012	74.784 m
1 August 2012	74.653 m
1 September 2012	74.505 m
1 October 2012	74.335 m
1 November 2012	74.286 m
1 December 2012	74.274 m
1 January 2013	74.380 m
1 February 2013	74.513 m
1 March 2013	74.573 m
1 April 2013	74.714 m
1 May 2013	74.876 m
1 June 2013	75.094 m
1 July 2013	75.139 m
1 August 2013	74.991 m
1 September 2013	74.790 m
1 October 2013	74.637 m
1 November 2013	74.591 m
1 December 2013	74.527 m
1 January 2014	74.641 m
1 February 2014	74.609 m
1 March 2014	74.549 m
1 April 2014	74.825 m
1 May 2014	75.138 m
1 June 2014	75.164 m
1 July 2014	75.088 m
1 August 2014	74.951 m
1 September 2014	74.767 m
1 October 2014	74.582 m
1 November 2014	74.456 m
1 December 2014	74.454 m
1 January 2015	74.556 m
1 February 2015	74.504 m
1 March 2015	74.408 m
1 April 2015	74.618 m
1 May 2015	74.808 m
1 June 2015	75.016 m
1 July 2015	75.206 m
1 August 2015	75.107 m
1 September 2015	74.898 m
1 October 2015	74.668 m
1 November 2015	74.556 m
1 December 2015	74.465 m
1 January 2016	74.624 m
1 February 2016	74.810 m
1 March 2016	74.967 m
1 April 2016	75.107 m
1 May 2016	75.083 m
1 June 2016	75.020 m
1 July 2016	74.945 m
1 August 2016	74.837 m
1 September 2016	74.695 m
1 October 2016	74.533 m
1 November 2016	74.483 m
1 December 2016	74.459 m
1 January 2017	74.615 m
1 February 2017	74.818 m
1 March 2017	75.006 m
1 April 2017	75.341 m
1 May 2017	75.790 m
1 June 2017	75.808 m
1 July 2017	75.686 m
1 August 2017	75.426 m
1 September 2017	75.079 m
1 October 2017	74.858 m
1 November 2017	74.861 m
1 December 2017	74.772 m
1 January 2018	74.834 m
1 February 2018	74.894 m
1 March 2018	74.930 m
1 April 2018	75.010 m
1 May 2018	75.250 m
1 June 2018	75.211 m
1 July 2018	75.060 m
1 August 2018	74.909 m
1 September 2018	74.727 m
1 October 2018	74.624 m
1 November 2018	74.617 m
1 December 2018	74.711 m
1 January 2019	74.829 m
1 February 2019	74.965 m
1 March 2019	74.968 m
1 April 2019	75.145 m
1 May 2019	75.689 m
1 June 2019	75.904 m
1 July 2019	75.802 m
1 August 2019	75.526 m
1 September 2019	75.236 m
1 October 2019	75.030 m
1 November 2019	75.034 m
1 December 2019	74.990 m
1 January 2020	75.053 m
1 February 2020	75.118 m
1 March 2020	75.177 m
1 April 2020	75.315 m
1 May 2020	75.359 m
1 June 2020	75.290 m
1 July 2020	75.180 m
1 August 2020	75.053 m
1 September 2020	74.852 m
1 October 2020	74.699 m
1 November 2020	74.596 m
1 December 2020	74.611 m
1 January 2021	74.625 m
1 February 2021	74.531 m
1 March 2021	74.489 m
1 April 2021	74.616 m
1 May 2021	74.722 m
1 June 2021	74.710 m
1 July 2021	74.808 m
1 August 2021	74.846 m
1 September 2021	74.790 m
1 October 2021	74.773 m
1 November 2021	74.857 m
1 December 2021	74.861 m
1 January 2022	74.864 m
1 February 2022	74.879 m
1 March 2022	74.987 m
1 April 2022	75.130 m
1 May 2022	75.166 m
1 June 2022	75.131 m
1 July 2022	74.949 m
1 August 2022	74.741 m
1 September 2022	74.549 m
1 October 2022	74.405 m
1 November 2022	74.397 m
1 December 2022	74.460 m
1 January 2023	74.648 m
1 February 2023	74.764 m
1 March 2023	74.880 m
1 April 2023	75.125 m
1 May 2023	75.361 m
1 June 2023	75.236 m
1 July 2023	75.145 m
1 August 2023	75.065 m
1 September 2023	74.882 m
1 October 2023	74.666 m
1 November 2023	74.493 m
1 December 2023	74.486 m
1 January 2024	74.596 m
1 February 2024	74.708 m
1 March 2024	74.734 m
1 April 2024	74.864 m
1 May 2024	74.956 m
1 June 2024	74.939 m
1 July 2024	74.982 m
1 August 2024	74.918 m
1 September 2024	74.780 m
1 October 2024	no value
1 November 2024	74.417 m
1 December 2024	74.419 m
1 January 2025	74.482 m
1 February 2025	74.456 m
1 March 2025	74.550 m
1 April 2025	74.790 m
1 May 2025	74.988 m
1 June 2025	75.091 m
1 July 2025	75.034 m
1 August 2025	74.873 m
1 September 2025	74.727 m
1 October 2025	74.568 m
1 November 2025	74.491 m
1 December 2025	74.431 m
1 January 2026	74.547 m
1 February 2026	74.538 m
1 March 2026	74.690 m
1 April 2026	75.104 m
1 May 2026	75.365 m
1 June 2026	75.393 m
1 July 2026	75.353 m
1 August 2026	75.274 m
1 September 2026	75.092 m
1 October 2026	no value

4 October in the last 10 years

Day	Level
4 October 2025	74.61 m
4 October 2024	no value
4 October 2023	74.735 m
4 October 2022	74.42 m
4 October 2021	74.773 m
4 October 2020	74.748 m
4 October 2019	75.091 m
4 October 2018	74.641 m
4 October 2017	74.87 m
4 October 2016	74.592 m

Year by year

Year	Days with a value	Days below the normal range
2026to 5 October 2026	275	0
2025	365	0
2024	336	0
2023	365	0
2022	365	0
2021	365	4
2020	366	0
2019	365	0
2018	365	0
2017	365	0
2016	366	0
2015	365	12
2014	365	0
2013	365	0
2012	366	55
2011	365	0
2010	365	9
2009	365	0
2008	366	0
2007	365	5
2006	365	0
2005	365	0
2004	366	0
2003	365	38
2002	365	0
2001	365	0
2000	366	0
1999	365	21
1998	364	15
1997	365	0
1996	366	0
1995	365	0
1994	365	0
1993	365	0
1992	358	0
1991	364	0
1990	365	0
1989	365	4
1988	366	0
1987	365	0
1986	365	0
1985	365	0
1984	366	0
1983	365	0
1982	365	0
1981	365	0
1980	366	0
1979	365	0
1978	365	0
1977	365	0
1976	366	0
1975	365	0
1974	365	0
1973	365	0
1972	366	0
1971	365	0
1970	365	0
1969	348	0
1968	366	0
1967	365	0
1966	365	0
1965	351	171
1964	366	349
1963	365	37
1962	365	72
1961	365	40
1960	362	0
1959	320	175
1958	364	260
1957	365	0
1956	366	0
1955	365	0
1954	365	0
1953	331	0
1935	139	139
1907	364	1
1906	355	0
1905	358	1
1904	335	2
1903	365	0
1902	365	153
1901	365	251
1900	365	198
1899	365	184
1898	365	119
1897	365	339
1896	366	366
1895	365	356
1894	365	9
1893	365	0
1892	366	125
1891	365	52
1890	365	0
1889	365	0
1888	366	0
1887	365	0
1886	365	0
1885	365	0
1884	366	0
1883	365	0
1882	184	0

Records

Highest daily average in our series since 1 July 1882: 75.917 m on 15 June 2019.
Lowest daily average in our series since 1 July 1882: 73.787 m on 10 February 1965.

Lake Ontario at Rochester: history

4 October in the last 10 years

Year by year

Records

See also