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Ottawa River water level at Mattawa today

Is the Ottawa River at Mattawa within its normal range for the date?

The Ottawa River at Mattawa read 52.366 m at .

Level now

within the normal range for the date

52.366 m

Provisional

within the normal range for the date

52.366 mNormal for the date50.74 m to 53.17 mLowest 49.949 mMedian 52.45 m
The normal range for 26 October is 50.74 m to 53.17 m: the 10th to 90th percentile of the daily averages from 19 October to 2 November in 116 years between 1906 and 2025.
Table: where the water stands
LevelValue
Newest reading52.366 m,
Normal range for the date50.74 m to 53.17 m
Median for the date52.45 m
Lowest in our series49.949 m
Past day
+0.079 m
Past week
+0.198 m

The gauge reads the height of the water above a fixed zero, not the depth of the river.

Level history

within the normal range for the date

On the Ottawa River at Mattawa averaged 52.287 m.

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

The last 90 days, against the normal range for each day 51 m 52 m 53 m 52.287 m
  • Level
  • Normal range for the date
  • Median for the date
  • A year earlier
Daily averages of the Ottawa River at Mattawa from 28 July 2026 to 25 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
DayDaily average (m)Normal rangeMedianA year earlier
no value50.960 m to 52.702 m52.330 m52.625 m
no value50.960 m to 52.694 m52.327 m52.598 m
no value50.955 m to 52.688 m52.327 m52.616 m
no value50.955 m to 52.683 m52.325 m52.584 m
no value50.951 m to 52.683 m52.325 m52.536 m
no value50.940 m to 52.678 m52.325 m52.421 m
no value50.925 m to 52.681 m52.325 m52.370 m
no value50.923 m to 52.677 m52.324 m52.422 m
no value50.920 m to 52.669 m52.324 m52.426 m
no value50.910 m to 52.668 m52.323 m52.395 m
no value50.898 m to 52.659 m52.322 m52.440 m
no value50.894 m to 52.659 m52.324 m52.485 m
no value50.894 m to 52.658 m52.324 m52.505 m
no value50.894 m to 52.653 m52.328 m52.479 m
no value50.894 m to 52.653 m52.328 m52.426 m
no value50.891 m to 52.653 m52.329 m52.399 m
no value50.890 m to 52.650 m52.329 m52.378 m
no value50.888 m to 52.644 m52.328 m52.405 m
no value50.885 m to 52.644 m52.326 m52.429 m
no value50.882 m to 52.644 m52.325 m52.395 m
no value50.879 m to 52.638 m52.323 m52.390 m
no value50.879 m to 52.635 m52.322 m52.360 m
no value50.876 m to 52.629 m52.320 m52.341 m
no value50.864 m to 52.628 m52.321 m52.283 m
no value50.860 m to 52.626 m52.320 m52.267 m
no value50.860 m to 52.626 m52.317 m52.278 m
no value50.849 m to 52.628 m52.317 m52.298 m
no value50.836 m to 52.623 m52.318 m52.284 m
no value50.833 m to 52.620 m52.317 m52.293 m
no value50.833 m to 52.615 m52.317 m52.260 m
no value50.830 m to 52.608 m52.316 m52.233 m
no value50.830 m to 52.604 m52.316 m52.261 m
no value50.824 m to 52.604 m52.315 m52.188 m
no value50.815 m to 52.600 m52.314 m52.165 m
no value50.803 m to 52.598 m52.311 m52.161 m
no value50.803 m to 52.598 m52.309 m52.159 m
no value50.800 m to 52.599 m52.308 m52.151 m
no value50.800 m to 52.600 m52.309 m52.165 m
no value50.794 m to 52.604 m52.309 m52.178 m
no value50.788 m to 52.610 m52.309 m52.294 m
no value50.778 m to 52.612 m52.308 m52.274 m
no value50.772 m to 52.613 m52.307 m52.284 m
no value50.772 m to 52.623 m52.302 m52.365 m
no value50.772 m to 52.626 m52.302 m52.278 m
52.413 m50.770 m to 52.629 m52.302 m52.277 m
52.356 m50.770 m to 52.634 m52.302 m52.289 m
52.414 m50.757 m to 52.638 m52.302 m52.288 m
52.386 m50.742 m to 52.640 m52.302 m52.295 m
52.386 m50.740 m to 52.644 m52.303 m52.313 m
52.377 m50.740 m to 52.647 m52.311 m52.303 m
52.367 m50.724 m to 52.650 m52.314 m52.284 m
52.391 m50.724 m to 52.653 m52.315 m52.290 m
52.344 m50.724 m to 52.655 m52.318 m52.277 m
52.381 m50.712 m to 52.659 m52.321 m52.301 m
52.343 m50.711 m to 52.659 m52.323 m52.301 m
52.328 m50.711 m to 52.659 m52.325 m52.314 m
52.337 m50.710 m to 52.659 m52.326 m52.321 m
52.317 m50.711 m to 52.662 m52.330 m52.318 m
52.291 m50.710 m to 52.666 m52.334 m52.323 m
52.231 m50.710 m to 52.671 m52.340 m52.300 m
52.199 m50.710 m to 52.671 m52.344 m52.305 m
52.248 m50.710 m to 52.677 m52.348 m52.282 m
52.251 m50.705 m to 52.679 m52.349 m52.280 m
52.235 m50.694 m to 52.680 m52.354 m52.262 m
52.242 m50.693 m to 52.680 m52.359 m52.266 m
52.247 m50.693 m to 52.686 m52.370 m52.232 m
52.239 m50.693 m to 52.688 m52.371 m52.218 m
52.254 m50.694 m to 52.690 m52.372 m52.193 m
52.261 m50.695 m to 52.702 m52.374 m52.203 m
52.219 m50.693 m to 52.705 m52.374 m52.201 m
52.226 m50.687 m to 52.717 m52.377 m52.196 m
52.258 m50.684 m to 52.724 m52.379 m52.213 m
52.233 m50.684 m to 52.735 m52.379 m52.225 m
52.268 m50.687 m to 52.741 m52.379 m52.230 m
52.272 m50.694 m to 52.760 m52.382 m52.246 m
52.267 m50.708 m to 52.772 m52.385 m52.266 m
52.267 m50.710 m to 52.790 m52.388 m52.285 m
52.272 m50.710 m to 52.805 m52.400 m52.311 m
52.311 m50.711 m to 52.817 m52.405 m52.313 m
52.292 m50.711 m to 52.834 m52.416 m52.328 m
52.316 m50.711 m to 52.860 m52.422 m52.318 m
52.285 m50.711 m to 52.883 m52.430 m52.320 m
52.325 m50.711 m to 52.905 m52.434 m52.316 m
52.299 m50.711 m to 52.924 m52.440 m52.311 m
52.299 m50.715 m to 52.958 m52.444 m52.284 m
52.333 m50.721 m to 52.998 m52.448 m52.301 m
52.284 m50.724 m to 53.030 m52.447 m52.285 m
52.302 m50.728 m to 53.083 m52.447 m52.275 m
52.315 m50.733 m to 53.122 m52.447 m52.282 m
52.287 m50.733 m to 53.159 m52.448 m52.271 m

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

The last 12 months, against the normal range for each day 50 m 52 m 54 m Lowest 49.949 m 52.287 m
  • Level
  • Normal range for the date
  • Median for the date
  • Our record
Daily averages of the Ottawa River at Mattawa from 25 October 2025 to 25 October 2026, with the normal range for each day.
Table: The last 12 months, against the normal range for each day
DayDaily average (m)Normal rangeMedian
52.271 m50.733 m to 53.159 m52.448 m
52.246 m50.736 m to 53.168 m52.448 m
52.256 m50.736 m to 53.206 m52.447 m
52.285 m50.739 m to 53.213 m52.447 m
52.274 m50.739 m to 53.215 m52.448 m
52.266 m50.740 m to 53.213 m52.449 m
52.281 m50.740 m to 53.214 m52.451 m
52.280 m50.740 m to 53.211 m52.451 m
52.291 m50.740 m to 53.183 m52.453 m
52.276 m50.740 m to 53.176 m52.453 m
52.296 m50.740 m to 53.164 m52.457 m
52.337 m50.740 m to 53.154 m52.458 m
52.297 m50.740 m to 53.143 m52.473 m
52.346 m50.740 m to 53.137 m52.476 m
52.304 m50.740 m to 53.128 m52.478 m
52.290 m50.743 m to 53.125 m52.480 m
52.304 m50.757 m to 53.118 m52.495 m
52.302 m50.770 m to 53.113 m52.503 m
52.339 m50.771 m to 53.101 m52.507 m
52.268 m50.785 m to 53.094 m52.510 m
52.244 m50.793 m to 53.092 m52.513 m
52.260 m50.799 m to 53.086 m52.513 m
52.210 m50.800 m to 53.074 m52.513 m
52.191 m50.800 m to 53.065 m52.514 m
52.172 m50.800 m to 53.056 m52.519 m
52.174 m50.800 m to 53.055 m52.522 m
52.193 m50.800 m to 53.055 m52.522 m
52.198 m50.800 m to 53.055 m52.525 m
52.196 m50.800 m to 53.050 m52.525 m
52.202 m50.800 m to 53.049 m52.528 m
52.193 m50.800 m to 53.049 m52.531 m
52.208 m50.800 m to 53.050 m52.534 m
52.208 m50.800 m to 53.055 m52.537 m
52.194 m50.800 m to 53.053 m52.537 m
52.123 m50.802 m to 53.050 m52.540 m
52.147 m50.803 m to 53.046 m52.542 m
52.175 m50.803 m to 53.043 m52.546 m
52.145 m50.808 m to 53.036 m52.546 m
52.171 m50.817 m to 53.031 m52.552 m
52.166 m50.830 m to 53.025 m52.554 m
52.145 m50.830 m to 53.012 m52.558 m
52.188 m50.830 m to 53.008 m52.558 m
52.192 m50.830 m to 53.000 m52.559 m
52.147 m50.830 m to 52.994 m52.567 m
52.145 m50.830 m to 52.982 m52.568 m
52.180 m50.841 m to 52.977 m52.574 m
52.159 m50.849 m to 52.967 m52.577 m
52.145 m50.854 m to 52.947 m52.578 m
52.120 m50.854 m to 52.943 m52.579 m
52.167 m50.855 m to 52.939 m52.580 m
52.140 m50.855 m to 52.939 m52.577 m
52.137 m50.857 m to 52.938 m52.574 m
52.151 m50.858 m to 52.933 m52.574 m
52.168 m50.858 m to 52.925 m52.564 m
52.213 m50.858 m to 52.915 m52.555 m
52.173 m50.857 m to 52.913 m52.547 m
52.208 m50.854 m to 52.905 m52.548 m
52.235 m50.852 m to 52.908 m52.548 m
52.284 m50.852 m to 52.902 m52.548 m
52.285 m50.849 m to 52.897 m52.547 m
52.318 m50.849 m to 52.895 m52.546 m
52.334 m50.846 m to 52.894 m52.543 m
52.390 m50.842 m to 52.882 m52.541 m
52.387 m50.833 m to 52.882 m52.538 m
52.424 m50.833 m to 52.884 m52.538 m
52.399 m50.830 m to 52.886 m52.540 m
52.416 m50.830 m to 52.885 m52.543 m
52.489 m50.830 m to 52.888 m52.546 m
no value50.824 m to 52.888 m52.552 m
no value50.821 m to 52.895 m52.566 m
no value50.821 m to 52.903 m52.572 m
no value50.821 m to 52.903 m52.576 m
no value50.821 m to 52.904 m52.577 m
no value50.821 m to 52.905 m52.579 m
no value50.821 m to 52.906 m52.580 m
no value50.821 m to 52.911 m52.585 m
no value50.821 m to 52.914 m52.592 m
no value50.821 m to 52.919 m52.596 m
no value50.821 m to 52.925 m52.599 m
no value50.821 m to 52.930 m52.601 m
no value50.821 m to 52.933 m52.608 m
no value50.821 m to 52.934 m52.613 m
no value50.821 m to 52.938 m52.616 m
no value50.825 m to 52.941 m52.622 m
no value50.821 m to 52.944 m52.631 m
no value50.821 m to 52.946 m52.635 m
no value50.818 m to 52.946 m52.640 m
no value50.818 m to 52.947 m52.641 m
no value50.818 m to 52.952 m52.641 m
no value50.818 m to 52.953 m52.645 m
no value50.818 m to 52.952 m52.644 m
no value50.818 m to 52.952 m52.642 m
no value50.818 m to 52.952 m52.646 m
no value50.815 m to 52.956 m52.648 m
no value50.817 m to 52.958 m52.651 m
no value50.817 m to 52.960 m52.647 m
no value50.815 m to 52.965 m52.650 m
no value50.812 m to 52.966 m52.654 m
no value50.812 m to 52.968 m52.656 m
no value50.807 m to 52.970 m52.656 m
no value50.803 m to 52.968 m52.651 m
no value50.800 m to 52.966 m52.649 m
no value50.800 m to 52.961 m52.649 m
no value50.800 m to 52.955 m52.645 m
no value50.800 m to 52.952 m52.641 m
no value50.800 m to 52.951 m52.644 m
no value50.800 m to 52.951 m52.645 m
no value50.800 m to 52.943 m52.645 m
no value50.800 m to 52.939 m52.645 m
no value50.800 m to 52.935 m52.645 m
no value50.800 m to 52.929 m52.645 m
no value50.797 m to 52.919 m52.638 m
no value50.794 m to 52.909 m52.635 m
no value50.794 m to 52.901 m52.631 m
no value50.794 m to 52.893 m52.616 m
no value50.786 m to 52.888 m52.608 m
no value50.785 m to 52.885 m52.605 m
no value50.785 m to 52.880 m52.589 m
no value50.785 m to 52.876 m52.578 m
no value50.789 m to 52.869 m52.565 m
no value50.794 m to 52.863 m52.555 m
no value50.794 m to 52.855 m52.534 m
no value50.794 m to 52.845 m52.516 m
no value50.794 m to 52.840 m52.501 m
no value50.794 m to 52.836 m52.480 m
no value50.794 m to 52.828 m52.461 m
no value50.789 m to 52.824 m52.430 m
no value50.782 m to 52.811 m52.399 m
no value50.778 m to 52.802 m52.373 m
no value50.772 m to 52.785 m52.341 m
no value50.772 m to 52.772 m52.293 m
no value50.770 m to 52.752 m52.247 m
no value50.770 m to 52.738 m52.184 m
no value50.770 m to 52.724 m52.130 m
no value50.770 m to 52.699 m52.039 m
no value50.770 m to 52.683 m51.977 m
no value50.770 m to 52.656 m51.916 m
no value50.750 m to 52.635 m51.848 m
no value50.743 m to 52.607 m51.786 m
no value50.740 m to 52.586 m51.722 m
no value50.740 m to 52.565 m51.683 m
no value50.740 m to 52.543 m51.643 m
no value50.740 m to 52.522 m51.574 m
no value50.740 m to 52.505 m51.536 m
no value50.740 m to 52.470 m51.506 m
no value50.739 m to 52.444 m51.468 m
no value50.739 m to 52.425 m51.441 m
no value50.740 m to 52.409 m51.412 m
no value50.740 m to 52.375 m51.399 m
no value50.740 m to 52.357 m51.382 m
no value50.740 m to 52.339 m51.367 m
no value50.736 m to 52.318 m51.352 m
no value50.733 m to 52.315 m51.327 m
no value50.714 m to 52.307 m51.320 m
no value50.714 m to 52.305 m51.316 m
no value50.710 m to 52.296 m51.303 m
no value50.710 m to 52.290 m51.299 m
no value50.707 m to 52.295 m51.316 m
no value50.706 m to 52.295 m51.324 m
no value50.705 m to 52.313 m51.338 m
no value50.701 m to 52.337 m51.367 m
no value50.691 m to 52.355 m51.387 m
no value50.684 m to 52.373 m51.404 m
no value50.684 m to 52.388 m51.421 m
no value50.684 m to 52.424 m51.440 m
no value50.690 m to 52.449 m51.465 m
no value50.699 m to 52.489 m51.486 m
no value50.706 m to 52.530 m51.520 m
no value50.711 m to 52.555 m51.571 m
no value50.726 m to 52.589 m51.614 m
no value50.755 m to 52.642 m51.653 m
no value50.772 m to 52.690 m51.720 m
no value50.800 m to 52.742 m51.762 m
no value50.815 m to 52.825 m51.821 m
no value50.835 m to 52.916 m51.883 m
no value50.865 m to 52.961 m51.934 m
no value50.891 m to 53.039 m51.996 m
no value50.950 m to 53.140 m52.063 m
no value50.986 m to 53.198 m52.125 m
no value51.028 m to 53.247 m52.188 m
no value51.077 m to 53.294 m52.238 m
no value51.110 m to 53.344 m52.275 m
no value51.199 m to 53.419 m52.315 m
no value51.284 m to 53.500 m52.347 m
no value51.325 m to 53.530 m52.382 m
no value51.392 m to 53.577 m52.449 m
no value51.443 m to 53.604 m52.480 m
no value51.505 m to 53.641 m52.522 m
no value51.556 m to 53.680 m52.564 m
no value51.601 m to 53.701 m52.590 m
no value51.655 m to 53.717 m52.622 m
no value51.685 m to 53.730 m52.641 m
no value51.720 m to 53.741 m52.661 m
no value51.751 m to 53.766 m52.675 m
no value51.809 m to 53.790 m52.686 m
no value51.819 m to 53.809 m52.702 m
no value51.836 m to 53.834 m52.705 m
no value51.840 m to 53.850 m52.708 m
no value51.848 m to 53.861 m52.711 m
no value51.852 m to 53.862 m52.713 m
no value51.843 m to 53.855 m52.713 m
no value51.860 m to 53.854 m52.714 m
no value51.854 m to 53.851 m52.719 m
no value51.867 m to 53.844 m52.720 m
no value51.867 m to 53.833 m52.719 m
no value51.858 m to 53.822 m52.719 m
no value51.858 m to 53.816 m52.719 m
no value51.868 m to 53.786 m52.719 m
no value51.870 m to 53.760 m52.720 m
no value51.893 m to 53.747 m52.721 m
no value51.900 m to 53.730 m52.726 m
no value51.930 m to 53.718 m52.735 m
no value51.930 m to 53.705 m52.744 m
no value51.960 m to 53.700 m52.748 m
no value51.960 m to 53.683 m52.747 m
no value51.960 m to 53.670 m52.740 m
no value51.960 m to 53.651 m52.723 m
no value51.960 m to 53.637 m52.712 m
no value51.960 m to 53.609 m52.701 m
no value51.960 m to 53.580 m52.690 m
no value51.938 m to 53.550 m52.674 m
no value51.919 m to 53.517 m52.667 m
no value51.886 m to 53.482 m52.653 m
no value51.841 m to 53.449 m52.638 m
no value51.810 m to 53.436 m52.629 m
no value51.786 m to 53.413 m52.623 m
no value51.750 m to 53.378 m52.616 m
no value51.690 m to 53.346 m52.610 m
no value51.687 m to 53.303 m52.601 m
no value51.660 m to 53.270 m52.591 m
no value51.632 m to 53.235 m52.574 m
no value51.630 m to 53.210 m52.568 m
no value51.619 m to 53.180 m52.560 m
no value51.600 m to 53.162 m52.553 m
no value51.560 m to 53.150 m52.543 m
no value51.543 m to 53.130 m52.539 m
no value51.530 m to 53.120 m52.531 m
no value51.509 m to 53.105 m52.523 m
no value51.500 m to 53.086 m52.519 m
no value51.488 m to 53.074 m52.517 m
no value51.470 m to 53.064 m52.510 m
no value51.443 m to 53.061 m52.504 m
no value51.428 m to 53.051 m52.494 m
no value51.410 m to 53.034 m52.487 m
no value51.380 m to 53.012 m52.482 m
no value51.350 m to 52.992 m52.474 m
no value51.320 m to 52.976 m52.469 m
no value51.290 m to 52.964 m52.456 m
no value51.264 m to 52.936 m52.449 m
no value51.260 m to 52.935 m52.443 m
no value51.230 m to 52.926 m52.439 m
no value51.230 m to 52.918 m52.429 m
no value51.230 m to 52.909 m52.423 m
no value51.220 m to 52.894 m52.417 m
no value51.200 m to 52.873 m52.412 m
no value51.200 m to 52.853 m52.403 m
no value51.196 m to 52.831 m52.400 m
no value51.183 m to 52.808 m52.399 m
no value51.170 m to 52.798 m52.394 m
no value51.146 m to 52.790 m52.387 m
no value51.109 m to 52.776 m52.385 m
no value51.086 m to 52.766 m52.382 m
no value51.062 m to 52.760 m52.381 m
no value51.052 m to 52.758 m52.378 m
no value51.031 m to 52.749 m52.373 m
no value51.020 m to 52.741 m52.373 m
no value51.019 m to 52.734 m52.368 m
no value51.016 m to 52.729 m52.363 m
no value51.006 m to 52.725 m52.360 m
no value51.000 m to 52.719 m52.356 m
no value50.995 m to 52.715 m52.351 m
no value50.990 m to 52.715 m52.347 m
no value50.989 m to 52.714 m52.343 m
no value50.986 m to 52.714 m52.339 m
no value50.986 m to 52.707 m52.337 m
no value50.978 m to 52.708 m52.333 m
no value50.960 m to 52.702 m52.330 m
no value50.960 m to 52.694 m52.327 m
no value50.955 m to 52.688 m52.327 m
no value50.955 m to 52.683 m52.325 m
no value50.951 m to 52.683 m52.325 m
no value50.940 m to 52.678 m52.325 m
no value50.925 m to 52.681 m52.325 m
no value50.923 m to 52.677 m52.324 m
no value50.920 m to 52.669 m52.324 m
no value50.910 m to 52.668 m52.323 m
no value50.898 m to 52.659 m52.322 m
no value50.894 m to 52.659 m52.324 m
no value50.894 m to 52.658 m52.324 m
no value50.894 m to 52.653 m52.328 m
no value50.894 m to 52.653 m52.328 m
no value50.891 m to 52.653 m52.329 m
no value50.890 m to 52.650 m52.329 m
no value50.888 m to 52.644 m52.328 m
no value50.885 m to 52.644 m52.326 m
no value50.882 m to 52.644 m52.325 m
no value50.879 m to 52.638 m52.323 m
no value50.879 m to 52.635 m52.322 m
no value50.876 m to 52.629 m52.320 m
no value50.864 m to 52.628 m52.321 m
no value50.860 m to 52.626 m52.320 m
no value50.860 m to 52.626 m52.317 m
no value50.849 m to 52.628 m52.317 m
no value50.836 m to 52.623 m52.318 m
no value50.833 m to 52.620 m52.317 m
no value50.833 m to 52.615 m52.317 m
no value50.830 m to 52.608 m52.316 m
no value50.830 m to 52.604 m52.316 m
no value50.824 m to 52.604 m52.315 m
no value50.815 m to 52.600 m52.314 m
no value50.803 m to 52.598 m52.311 m
no value50.803 m to 52.598 m52.309 m
no value50.800 m to 52.599 m52.308 m
no value50.800 m to 52.600 m52.309 m
no value50.794 m to 52.604 m52.309 m
no value50.788 m to 52.610 m52.309 m
no value50.778 m to 52.612 m52.308 m
no value50.772 m to 52.613 m52.307 m
no value50.772 m to 52.623 m52.302 m
no value50.772 m to 52.626 m52.302 m
52.413 m50.770 m to 52.629 m52.302 m
52.356 m50.770 m to 52.634 m52.302 m
52.414 m50.757 m to 52.638 m52.302 m
52.386 m50.742 m to 52.640 m52.302 m
52.386 m50.740 m to 52.644 m52.303 m
52.377 m50.740 m to 52.647 m52.311 m
52.367 m50.724 m to 52.650 m52.314 m
52.391 m50.724 m to 52.653 m52.315 m
52.344 m50.724 m to 52.655 m52.318 m
52.381 m50.712 m to 52.659 m52.321 m
52.343 m50.711 m to 52.659 m52.323 m
52.328 m50.711 m to 52.659 m52.325 m
52.337 m50.710 m to 52.659 m52.326 m
52.317 m50.711 m to 52.662 m52.330 m
52.291 m50.710 m to 52.666 m52.334 m
52.231 m50.710 m to 52.671 m52.340 m
52.199 m50.710 m to 52.671 m52.344 m
52.248 m50.710 m to 52.677 m52.348 m
52.251 m50.705 m to 52.679 m52.349 m
52.235 m50.694 m to 52.680 m52.354 m
52.242 m50.693 m to 52.680 m52.359 m
52.247 m50.693 m to 52.686 m52.370 m
52.239 m50.693 m to 52.688 m52.371 m
52.254 m50.694 m to 52.690 m52.372 m
52.261 m50.695 m to 52.702 m52.374 m
52.219 m50.693 m to 52.705 m52.374 m
52.226 m50.687 m to 52.717 m52.377 m
52.258 m50.684 m to 52.724 m52.379 m
52.233 m50.684 m to 52.735 m52.379 m
52.268 m50.687 m to 52.741 m52.379 m
52.272 m50.694 m to 52.760 m52.382 m
52.267 m50.708 m to 52.772 m52.385 m
52.267 m50.710 m to 52.790 m52.388 m
52.272 m50.710 m to 52.805 m52.400 m
52.311 m50.711 m to 52.817 m52.405 m
52.292 m50.711 m to 52.834 m52.416 m
52.316 m50.711 m to 52.860 m52.422 m
52.285 m50.711 m to 52.883 m52.430 m
52.325 m50.711 m to 52.905 m52.434 m
52.299 m50.711 m to 52.924 m52.440 m
52.299 m50.715 m to 52.958 m52.444 m
52.333 m50.721 m to 52.998 m52.448 m
52.284 m50.724 m to 53.030 m52.447 m
52.302 m50.728 m to 53.083 m52.447 m
52.315 m50.733 m to 53.122 m52.447 m
52.287 m50.733 m to 53.159 m52.448 m

The last 10 years, weekly averages

The last 10 years, weekly averages 50 m 52 m 54 m 56 m Highest 55.777 m Lowest 49.949 m 52.303 m
  • Level
  • Our record
Weekly averages of the Ottawa River at Mattawa from the week of 24 October 2016 to 25 October 2026.
Table: The last 10 years, weekly averages
Week startingWeekly average (m)
52.463 m
52.423 m
52.367 m
52.273 m
52.310 m
52.470 m
52.502 m
52.323 m
52.211 m
52.347 m
52.554 m
52.743 m
52.706 m
52.735 m
52.773 m
52.789 m
52.820 m
52.782 m
52.754 m
52.326 m
51.993 m
51.587 m
51.450 m
51.688 m
52.458 m
52.669 m
53.215 m
53.775 m
53.265 m
53.269 m
53.417 m
53.425 m
53.123 m
52.768 m
52.849 m
52.786 m
52.688 m
52.579 m
52.366 m
52.368 m
52.401 m
52.464 m
52.548 m
52.597 m
52.526 m
52.551 m
52.501 m
52.634 m
52.569 m
52.476 m
52.438 m
52.476 m
52.447 m
52.535 m
52.598 m
52.543 m
52.479 m
52.555 m
52.914 m
52.928 m
52.572 m
52.554 m
52.739 m
52.906 m
52.940 m
52.748 m
52.689 m
52.669 m
52.742 m
52.703 m
52.343 m
51.751 m
51.293 m
51.119 m
50.911 m
50.841 m
50.709 m
50.516 m
51.288 m
52.241 m
53.017 m
53.033 m
53.105 m
53.148 m
52.751 m
52.439 m
52.488 m
52.540 m
52.324 m
52.316 m
52.359 m
52.357 m
52.372 m
52.398 m
52.363 m
52.411 m
52.376 m
52.795 m
52.813 m
52.562 m
52.494 m
52.575 m
53.265 m
53.706 m
53.584 m
53.083 m
53.205 m
53.146 m
52.711 m
52.807 m
52.745 m
52.780 m
52.768 m
52.667 m
52.741 m
52.722 m
52.639 m
52.714 m
52.699 m
52.914 m
52.857 m
52.753 m
52.442 m
51.767 m
51.419 m
51.362 m
51.252 m
51.220 m
51.447 m
51.774 m
53.022 m
54.016 m
55.248 m
55.300 m
55.170 m
54.269 m
53.409 m
53.565 m
53.765 m
53.060 m
52.601 m
52.453 m
52.388 m
52.315 m
52.314 m
52.351 m
52.373 m
52.373 m
52.357 m
52.321 m
52.337 m
52.371 m
52.434 m
52.368 m
52.287 m
52.353 m
52.481 m
52.546 m
52.660 m
52.560 m
52.627 m
52.546 m
52.657 m
52.639 m
52.637 m
52.621 m
52.657 m
52.669 m
52.714 m
52.839 m
52.836 m
52.848 m
52.884 m
52.629 m
52.629 m
52.114 m
51.475 m
51.194 m
51.211 m
51.766 m
52.366 m
52.495 m
52.307 m
52.522 m
52.933 m
52.779 m
52.729 m
52.807 m
52.875 m
52.683 m
52.536 m
52.570 m
52.497 m
52.455 m
52.426 m
52.571 m
52.528 m
52.488 m
52.381 m
52.357 m
52.335 m
52.412 m
52.446 m
52.569 m
52.587 m
52.629 m
52.562 m
52.710 m
53.123 m
53.484 m
53.252 m
53.091 m
52.985 m
52.941 m
52.882 m
52.794 m
52.700 m
52.694 m
52.702 m
52.836 m
52.859 m
52.869 m
52.778 m
52.871 m
52.844 m
52.832 m
52.567 m
52.236 m
51.949 m
51.684 m
51.606 m
51.691 m
51.711 m
52.294 m
52.245 m
52.219 m
52.278 m
52.395 m
52.368 m
52.372 m
52.299 m
52.319 m
52.266 m
52.222 m
52.322 m
52.310 m
52.553 m
52.645 m
52.662 m
52.387 m
52.366 m
52.314 m
52.256 m
52.214 m
52.207 m
52.316 m
52.520 m
52.517 m
52.481 m
52.551 m
52.570 m
52.409 m
52.293 m
52.364 m
52.384 m
52.396 m
52.239 m
52.333 m
52.513 m
52.758 m
52.685 m
52.523 m
52.764 m
52.823 m
52.803 m
52.957 m
52.715 m
52.500 m
52.299 m
52.276 m
52.053 m
51.509 m
51.551 m
51.445 m
51.873 m
52.479 m
52.807 m
52.931 m
53.065 m
53.127 m
53.212 m
53.543 m
53.326 m
53.051 m
53.147 m
53.003 m
52.663 m
52.590 m
52.428 m
52.339 m
52.381 m
52.384 m
52.376 m
52.329 m
52.310 m
52.291 m
52.377 m
52.375 m
52.615 m
52.630 m
52.581 m
52.588 m
52.605 m
52.509 m
52.408 m
52.581 m
52.783 m
52.660 m
52.730 m
52.715 m
52.619 m
52.629 m
52.622 m
52.652 m
52.822 m
52.866 m
52.838 m
52.958 m
52.965 m
52.686 m
52.543 m
52.419 m
52.105 m
51.408 m
51.203 m
51.110 m
51.044 m
51.517 m
52.875 m
53.677 m
54.459 m
53.693 m
53.313 m
53.107 m
52.697 m
52.403 m
52.585 m
52.470 m
52.475 m
52.437 m
52.414 m
52.380 m
52.363 m
52.361 m
52.384 m
52.343 m
52.345 m
52.409 m
52.398 m
52.541 m
52.550 m
52.512 m
52.477 m
52.928 m
53.128 m
53.493 m
53.348 m
53.177 m
53.016 m
52.995 m
52.775 m
52.577 m
52.539 m
52.545 m
52.540 m
52.538 m
52.808 m
52.842 m
52.978 m
52.939 m
53.028 m
52.826 m
52.748 m
52.621 m
52.268 m
51.952 m
51.583 m
51.827 m
52.216 m
53.069 m
53.658 m
53.883 m
53.332 m
52.984 m
52.467 m
52.470 m
52.465 m
52.394 m
52.445 m
52.507 m
52.529 m
52.733 m
52.607 m
52.417 m
52.381 m
52.362 m
52.328 m
52.359 m
52.366 m
52.377 m
52.537 m
52.501 m
52.454 m
52.550 m
52.637 m
52.640 m
52.538 m
52.469 m
52.562 m
53.284 m
53.519 m
53.036 m
52.911 m
52.723 m
52.608 m
52.618 m
52.635 m
52.898 m
52.992 m
53.016 m
52.987 m
52.977 m
52.939 m
52.842 m
52.866 m
52.852 m
52.705 m
51.904 m
52.097 m
52.006 m
51.931 m
51.944 m
52.263 m
52.963 m
53.962 m
54.260 m
53.993 m
53.161 m
52.833 m
52.557 m
52.577 m
52.608 m
52.699 m
52.562 m
52.601 m
52.540 m
52.613 m
52.536 m
52.450 m
52.403 m
52.302 m
52.223 m
52.215 m
52.301 m
52.296 m
52.304 m
52.225 m
52.237 m
52.317 m
52.278 m
52.276 m
52.307 m
52.275 m
52.189 m
52.178 m
52.165 m
52.151 m
52.184 m
52.346 m
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
52.392 m
52.370 m
52.279 m
52.247 m
52.249 m
52.295 m
52.303 m

The whole record since 1906, monthly averages

The whole record since 1906, monthly averages 50 m 52 m 54 m 56 m Highest 55.777 m Lowest 49.949 m 52.277 m
  • Level
  • Our record
Monthly averages of the Ottawa River at Mattawa from 30 April 1906 to 25 October 2026.
Table: The whole record since 1906, monthly averages
Month startingMonthly average (m)
no value
52.625 m
52.611 m
51.495 m
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
53.144 m
no value
no value
no value
no value
no value
no value
no value
no value
no value
no value
51.085 m
53.083 m
53.388 m
51.687 m
51.284 m
51.162 m
51.114 m
51.229 m
51.021 m
50.542 m
50.160 m
50.205 m
51.515 m
52.141 m
51.840 m
50.993 m
50.704 m
50.622 m
50.903 m
51.339 m
50.907 m
50.492 m
50.206 m
50.350 m
50.775 m
53.205 m
52.265 m
51.084 m
50.599 m
50.426 m
50.280 m
50.720 m
50.975 m
50.826 m
50.553 m
50.597 m
50.705 m
52.650 m
52.831 m
51.592 m
50.980 m
50.621 m
50.749 m
51.065 m
50.892 m
50.902 m
50.950 m
50.769 m
51.088 m
52.963 m
51.809 m
50.991 m
50.865 m
50.691 m
50.659 m
51.219 m
51.543 m
51.002 m
50.954 m
50.821 m
50.832 m
51.817 m
51.567 m
50.930 m
50.417 m
50.180 m
49.992 m
50.045 m
50.140 m
50.178 m
50.216 m
50.245 m
50.541 m
51.505 m
51.679 m
51.270 m
50.917 m
50.716 m
50.849 m
50.877 m
50.974 m
50.900 m
50.863 m
50.875 m
51.962 m
53.759 m
52.250 m
51.312 m
50.878 m
50.552 m
50.492 m
50.866 m
50.957 m
50.925 m
50.999 m
50.949 m
51.090 m
53.187 m
53.292 m
no value
no value
no value
no value
50.876 m
50.875 m
50.925 m
50.762 m
50.514 m
51.093 m
52.310 m
52.041 m
51.453 m
51.080 m
50.963 m
51.495 m
52.142 m
51.409 m
51.156 m
51.213 m
50.895 m
52.029 m
53.753 m
52.691 m
51.236 m
50.933 m
51.090 m
51.644 m
51.769 m
51.708 m
51.318 m
51.129 m
51.010 m
51.822 m
52.317 m
51.483 m
51.244 m
50.882 m
50.679 m
50.433 m
50.438 m
50.479 m
50.421 m
50.387 m
50.438 m
51.617 m
52.951 m
51.342 m
51.013 m
50.804 m
50.508 m
50.565 m
50.670 m
50.857 m
50.910 m
50.936 m
50.925 m
52.933 m
53.944 m
51.633 m
51.209 m
50.907 m
50.721 m
50.620 m
50.496 m
50.520 m
50.532 m
50.549 m
50.465 m
50.708 m
52.399 m
52.046 m
51.432 m
51.079 m
50.953 m
50.916 m
50.779 m
50.658 m
50.667 m
50.683 m
50.955 m
51.286 m
52.272 m
52.358 m
51.280 m
51.022 m
50.957 m
51.005 m
51.086 m
51.011 m
50.865 m
50.952 m
51.127 m
51.795 m
52.015 m
52.354 m
51.760 m
51.187 m
50.974 m
50.846 m
50.787 m
50.886 m
50.923 m
50.970 m
51.011 m
50.664 m
52.346 m
52.438 m
51.874 m
51.250 m
50.927 m
50.721 m
50.689 m
50.874 m
51.155 m
51.274 m
51.457 m
51.745 m
51.981 m
52.123 m
51.445 m
51.155 m
51.207 m
51.289 m
51.320 m
51.334 m
51.213 m
51.216 m
51.042 m
52.186 m
54.985 m
53.312 m
52.523 m
51.628 m
51.968 m
53.028 m
52.707 m
51.772 m
51.380 m
51.070 m
51.140 m
52.040 m
53.470 m
52.519 m
51.815 m
51.360 m
51.068 m
51.271 m
51.415 m
51.106 m
51.056 m
50.885 m
50.741 m
51.050 m
52.371 m
52.838 m
52.764 m
51.455 m
51.181 m
51.030 m
50.989 m
50.959 m
50.884 m
50.806 m
50.750 m
51.260 m
51.538 m
51.449 m
51.065 m
51.199 m
50.712 m
50.693 m
50.926 m
51.374 m
51.058 m
51.075 m
51.144 m
51.582 m
51.932 m
51.514 m
51.248 m
51.381 m
51.868 m
52.821 m
53.177 m
51.662 m
51.244 m
51.031 m
51.043 m
52.113 m
53.267 m
52.082 m
51.231 m
50.990 m
50.557 m
50.557 m
50.689 m
50.678 m
50.622 m
50.611 m
50.592 m
51.331 m
53.703 m
52.069 m
51.384 m
50.865 m
50.956 m
51.284 m
50.855 m
50.898 m
50.822 m
50.982 m
51.144 m
51.407 m
51.534 m
51.218 m
51.234 m
51.022 m
50.940 m
50.874 m
50.971 m
50.751 m
50.913 m
50.931 m
50.930 m
51.407 m
53.753 m
52.403 m
51.100 m
50.872 m
50.907 m
50.975 m
51.181 m
50.833 m
51.067 m
51.305 m
51.511 m
51.606 m
52.575 m
51.448 m
51.035 m
51.045 m
51.032 m
51.228 m
51.832 m
51.358 m
51.100 m
51.085 m
51.585 m
53.026 m
52.770 m
51.667 m
51.029 m
51.023 m
50.994 m
51.028 m
50.991 m
50.908 m
50.857 m
50.906 m
50.894 m
51.156 m
53.107 m
53.041 m
51.526 m
50.977 m
50.879 m
50.954 m
51.100 m
50.868 m
50.782 m
50.740 m
50.813 m
50.758 m
51.538 m
52.723 m
51.669 m
51.019 m
51.161 m
50.838 m
51.155 m
51.013 m
50.908 m
51.081 m
51.185 m
52.350 m
51.991 m
51.171 m
51.605 m
51.266 m
51.573 m
52.272 m
52.540 m
51.605 m
51.329 m
51.377 m
51.288 m
52.380 m
52.009 m
51.732 m
50.994 m
50.942 m
50.830 m
50.465 m
50.360 m
50.510 m
50.792 m
50.945 m
50.991 m
51.177 m
52.210 m
52.512 m
51.275 m
50.889 m
51.159 m
51.027 m
50.861 m
51.011 m
50.912 m
50.920 m
50.896 m
50.870 m
51.680 m
51.280 m
50.930 m
50.883 m
50.846 m
50.767 m
50.817 m
50.923 m
50.895 m
50.757 m
51.043 m
51.398 m
52.108 m
52.493 m
50.935 m
50.782 m
50.770 m
50.808 m
50.833 m
50.866 m
51.145 m
51.117 m
51.332 m
51.405 m
51.654 m
51.727 m
50.994 m
50.901 m
50.844 m
50.834 m
50.794 m
50.822 m
51.096 m
51.079 m
50.904 m
51.697 m
54.199 m
55.089 m
51.787 m
50.995 m
50.874 m
50.749 m
50.733 m
50.849 m
50.815 m
50.809 m
50.630 m
51.729 m
51.675 m
51.322 m
51.032 m
50.812 m
50.777 m
50.744 m
50.805 m
50.821 m
50.868 m
50.961 m
51.030 m
52.200 m
52.090 m
51.823 m
51.609 m
50.907 m
50.958 m
50.877 m
50.930 m
50.974 m
50.952 m
51.079 m
51.109 m
51.132 m
52.525 m
52.201 m
52.587 m
52.612 m
52.215 m
52.401 m
52.400 m
51.796 m
51.863 m
51.959 m
51.861 m
53.408 m
52.906 m
52.324 m
52.417 m
52.056 m
52.223 m
52.955 m
53.285 m
53.020 m
52.569 m
52.261 m
52.043 m
51.972 m
52.889 m
52.729 m
51.891 m
52.326 m
52.131 m
51.957 m
52.330 m
52.454 m
52.619 m
52.532 m
52.762 m
53.376 m
52.573 m
52.467 m
52.458 m
52.411 m
52.399 m
52.498 m
52.124 m
52.524 m
52.579 m
52.471 m
52.479 m
52.004 m
51.788 m
52.989 m
52.510 m
52.423 m
52.544 m
53.200 m
53.068 m
52.818 m
52.585 m
52.620 m
52.260 m
51.881 m
52.451 m
52.131 m
51.971 m
51.951 m
51.832 m
52.151 m
52.873 m
52.700 m
52.167 m
52.097 m
51.667 m
51.645 m
52.548 m
52.885 m
52.723 m
52.558 m
52.738 m
53.064 m
52.619 m
52.416 m
52.357 m
52.543 m
52.444 m
52.358 m
52.759 m
52.567 m
53.445 m
51.899 m
52.362 m
52.573 m
52.896 m
52.873 m
52.753 m
52.719 m
52.558 m
51.404 m
51.516 m
52.228 m
52.302 m
51.956 m
52.011 m
52.504 m
52.676 m
52.603 m
52.141 m
52.126 m
51.924 m
51.518 m
52.578 m
52.448 m
52.020 m
51.777 m
52.261 m
52.426 m
52.848 m
52.850 m
52.729 m
52.772 m
52.448 m
52.296 m
54.615 m
52.995 m
53.339 m
52.800 m
52.709 m
52.750 m
52.808 m
52.679 m
52.677 m
52.529 m
52.352 m
52.195 m
52.453 m
52.731 m
52.600 m
52.556 m
52.562 m
52.714 m
52.590 m
52.673 m
52.749 m
52.673 m
52.504 m
52.175 m
52.784 m
52.463 m
51.909 m
51.903 m
52.357 m
52.578 m
52.484 m
52.429 m
52.387 m
52.604 m
52.462 m
51.727 m
52.195 m
52.458 m
52.076 m
52.341 m
52.530 m
52.573 m
52.578 m
52.676 m
52.793 m
52.759 m
52.337 m
51.775 m
52.768 m
52.912 m
52.632 m
52.548 m
52.489 m
52.609 m
52.624 m
52.677 m
52.737 m
52.772 m
52.218 m
51.253 m
52.622 m
52.703 m
52.493 m
52.634 m
53.019 m
53.379 m
52.913 m
52.759 m
52.818 m
52.822 m
52.342 m
52.342 m
52.623 m
52.861 m
52.632 m
52.741 m
52.654 m
52.807 m
53.113 m
53.627 m
53.019 m
53.239 m
52.349 m
52.812 m
53.479 m
53.359 m
52.750 m
52.618 m
52.596 m
52.595 m
52.924 m
52.760 m
52.834 m
52.773 m
52.379 m
52.137 m
52.276 m
52.636 m
52.600 m
52.670 m
52.658 m
52.687 m
52.544 m
52.464 m
52.503 m
52.538 m
52.172 m
51.814 m
52.736 m
52.876 m
52.681 m
52.706 m
52.638 m
52.738 m
53.166 m
52.932 m
52.807 m
52.747 m
52.265 m
51.616 m
52.657 m
53.296 m
53.352 m
52.890 m
52.747 m
52.762 m
52.727 m
52.778 m
52.753 m
52.745 m
52.334 m
51.875 m
52.712 m
52.602 m
52.344 m
52.460 m
52.118 m
52.223 m
52.428 m
52.596 m
52.674 m
52.680 m
52.441 m
51.583 m
52.860 m
52.707 m
52.562 m
52.659 m
52.582 m
52.686 m
52.779 m
52.679 m
52.673 m
52.759 m
52.439 m
52.730 m
53.176 m
52.935 m
52.745 m
52.514 m
52.579 m
52.631 m
52.800 m
52.743 m
52.582 m
52.624 m
52.428 m
52.067 m
53.543 m
53.488 m
53.012 m
52.576 m
52.472 m
52.592 m
52.842 m
52.762 m
52.709 m
52.784 m
52.148 m
51.510 m
52.650 m
52.955 m
52.509 m
52.397 m
52.373 m
52.453 m
52.497 m
52.680 m
52.674 m
52.678 m
52.224 m
53.114 m
53.529 m
52.646 m
52.587 m
52.480 m
52.452 m
52.518 m
52.488 m
52.671 m
52.668 m
52.659 m
51.856 m
52.953 m
52.877 m
52.531 m
52.560 m
52.444 m
52.496 m
52.521 m
52.691 m
52.758 m
52.745 m
52.829 m
51.812 m
51.176 m
52.493 m
52.627 m
52.516 m
52.434 m
52.437 m
52.635 m
52.637 m
52.636 m
52.674 m
52.714 m
52.043 m
52.558 m
54.056 m
53.118 m
52.699 m
52.668 m
52.617 m
52.666 m
53.104 m
53.107 m
53.049 m
52.820 m
51.827 m
52.407 m
53.192 m
52.430 m
52.547 m
52.405 m
52.510 m
52.735 m
52.773 m
52.761 m
52.602 m
52.723 m
52.328 m
53.254 m
52.873 m
52.911 m
52.588 m
52.506 m
52.569 m
52.601 m
52.680 m
52.630 m
52.683 m
52.717 m
51.868 m
51.513 m
52.460 m
52.555 m
52.477 m
52.438 m
52.373 m
52.492 m
52.719 m
52.865 m
52.945 m
52.831 m
52.301 m
51.944 m
53.374 m
53.241 m
52.526 m
52.455 m
52.227 m
52.506 m
52.656 m
52.668 m
52.796 m
52.772 m
51.918 m
52.151 m
52.658 m
53.014 m
52.724 m
52.454 m
52.466 m
52.514 m
52.874 m
52.916 m
52.890 m
52.746 m
51.917 m
51.918 m
53.236 m
52.665 m
52.798 m
52.693 m
52.500 m
52.468 m
52.525 m
52.628 m
52.657 m
52.815 m
51.611 m
52.427 m
52.956 m
52.654 m
52.457 m
52.403 m
52.406 m
52.577 m
52.593 m
52.553 m
52.628 m
52.731 m
51.586 m
51.846 m
52.112 m
52.105 m
52.184 m
52.213 m
51.953 m
51.990 m
52.425 m
52.613 m
52.746 m
52.789 m
51.701 m
52.420 m
52.927 m
52.483 m
52.380 m
52.589 m
52.637 m
53.087 m
53.331 m
53.020 m
52.970 m
52.842 m
51.703 m
51.845 m
52.959 m
53.170 m
52.499 m
52.073 m
52.002 m
51.882 m
52.449 m
52.643 m
52.786 m
52.470 m
51.594 m
51.832 m
52.732 m
52.619 m
52.602 m
52.385 m
52.395 m
52.874 m
52.923 m
53.206 m
52.911 m
52.904 m
51.808 m
52.456 m
52.669 m
52.451 m
52.352 m
52.291 m
52.349 m
52.514 m
52.672 m
52.657 m
52.770 m
52.768 m
51.632 m
51.215 m
52.596 m
52.473 m
52.517 m
52.423 m
52.619 m
52.614 m
52.934 m
52.765 m
52.698 m
52.786 m
51.553 m
51.246 m
52.202 m
52.640 m
52.429 m
52.347 m
52.342 m
52.749 m
52.946 m
52.755 m
52.835 m
53.033 m
51.805 m
51.220 m
52.708 m
52.742 m
52.851 m
52.572 m
52.448 m
52.531 m
52.710 m
52.655 m
52.806 m
52.573 m
52.030 m
51.502 m
53.102 m
52.928 m
52.390 m
52.352 m
52.316 m
52.338 m
52.581 m
52.727 m
52.699 m
52.760 m
51.940 m
51.534 m
53.485 m
52.749 m
52.757 m
52.537 m
52.416 m
52.504 m
52.651 m
52.617 m
52.736 m
52.906 m
52.039 m
52.153 m
53.192 m
52.816 m
52.640 m
52.461 m
52.460 m
52.496 m
52.514 m
52.526 m
52.630 m
52.677 m
51.737 m
52.680 m
52.425 m
52.469 m
52.341 m
52.295 m
52.303 m
52.346 m
52.372 m
52.673 m
52.732 m
52.761 m
51.774 m
51.844 m
52.341 m
52.730 m
52.536 m
52.467 m
52.443 m
52.860 m
53.073 m
53.084 m
52.874 m
52.850 m
52.407 m
52.242 m
52.572 m
52.583 m
52.478 m
52.544 m
52.407 m
52.257 m
52.422 m
52.637 m
52.651 m
52.502 m
51.903 m
52.085 m
52.790 m
52.525 m
52.359 m
52.244 m
52.338 m
53.135 m
53.290 m
53.272 m
52.981 m
52.839 m
52.085 m
52.487 m
53.225 m
53.108 m
52.603 m
52.482 m
52.365 m
52.462 m
52.375 m
52.434 m
52.678 m
52.745 m
51.939 m
51.586 m
52.293 m
52.512 m
52.527 m
52.627 m
52.364 m
52.669 m
52.950 m
52.882 m
52.868 m
52.862 m
51.876 m
52.212 m
53.133 m
52.630 m
53.071 m
52.410 m
52.376 m
52.349 m
52.375 m
52.602 m
52.644 m
52.709 m
51.687 m
52.156 m
52.454 m
52.414 m
52.394 m
52.366 m
52.328 m
52.360 m
52.664 m
52.817 m
52.836 m
52.869 m
52.035 m
52.765 m
52.611 m
52.472 m
52.421 m
52.378 m
52.364 m
52.757 m
53.011 m
53.132 m
53.052 m
52.798 m
51.887 m
51.661 m
52.349 m
52.787 m
52.570 m
52.286 m
52.300 m
52.249 m
52.425 m
52.429 m
52.611 m
52.828 m
51.827 m
51.836 m
53.158 m
52.954 m
52.942 m
52.703 m
52.554 m
52.497 m
52.640 m
52.674 m
52.803 m
52.809 m
51.818 m
52.523 m
53.436 m
52.885 m
52.629 m
52.622 m
52.416 m
52.600 m
52.874 m
52.623 m
52.603 m
52.755 m
51.797 m
51.992 m
52.277 m
52.317 m
52.276 m
52.259 m
52.466 m
52.610 m
52.545 m
52.627 m
52.799 m
52.708 m
51.424 m
51.735 m
52.897 m
52.547 m
52.499 m
52.383 m
52.331 m
52.353 m
52.564 m
52.540 m
52.807 m
52.818 m
52.348 m
52.559 m
52.418 m
52.355 m
52.226 m
52.310 m
52.346 m
52.609 m
52.975 m
52.652 m
52.698 m
52.842 m
51.742 m
52.004 m
53.661 m
53.145 m
52.334 m
52.471 m
52.479 m
52.540 m
53.269 m
52.760 m
52.707 m
52.804 m
51.510 m
51.627 m
53.565 m
52.670 m
52.531 m
52.489 m
52.745 m
53.134 m
53.131 m
52.862 m
53.011 m
52.872 m
51.950 m
51.896 m
52.924 m
52.585 m
52.363 m
52.444 m
52.442 m
52.401 m
52.645 m
53.088 m
53.112 m
52.878 m
52.646 m
52.589 m
52.802 m
52.604 m
52.426 m
52.396 m
52.415 m
52.436 m
52.345 m
52.364 m
52.684 m
52.796 m
52.008 m
52.434 m
53.434 m
52.956 m
52.516 m
52.503 m
52.568 m
52.464 m
52.542 m
52.726 m
52.821 m
52.682 m
51.403 m
50.879 m
52.922 m
52.610 m
52.340 m
52.388 m
52.648 m
53.276 m
52.984 m
52.739 m
52.699 m
52.781 m
51.542 m
51.989 m
54.939 m
53.469 m
52.431 m
52.354 m
52.367 m
52.395 m
52.592 m
52.642 m
52.733 m
52.763 m
51.536 m
52.290 m
52.813 m
52.661 m
52.488 m
52.398 m
52.520 m
52.912 m
53.072 m
52.755 m
52.823 m
52.778 m
51.861 m
52.042 m
52.346 m
52.276 m
52.518 m
52.331 m
52.343 m
52.506 m
52.352 m
52.516 m
52.725 m
52.600 m
51.776 m
52.402 m
53.249 m
53.047 m
52.451 m
52.343 m
52.465 m
52.570 m
52.633 m
52.653 m
52.789 m
52.762 m
51.630 m
52.201 m
53.561 m
52.505 m
52.401 m
52.364 m
52.490 m
53.029 m
53.069 m
52.559 m
52.809 m
52.847 m
51.970 m
53.241 m
52.698 m
52.469 m
52.519 m
52.357 m
52.511 m
52.556 m
53.150 m
52.661 m
52.985 m
52.885 m
52.213 m
52.428 m
53.664 m
52.620 m
52.577 m
52.354 m
52.278 m
52.266 m
52.241 m
52.233 m
no value
no value
no value
no value
no value
no value
no value
no value
52.325 m
52.277 m

How this compares

  • The daily average on 25 October 2026 was 52.287 m, the forty-eighth lowest for 25 October in 117 years of record (1909 to 2026). The newest value is provisional.
  • That is 0.18 m below the median of 52.47 m for 25 October over the last 10 years. The newest value is provisional.

Same date in past years

25 October in the last 10 years

DayLevelAgainst the normal range for the date
52.271 m
52.438 m
53.46 m
52.556 m
52.451 m
53.582 m
52.495 m
53.523 m
52.44 m
52.448 m

Year by year

The lowest and highest daily average of each year

The lowest and highest daily average of each year 50 m 52 m 54 m 56 m Lowest 49.949 m, 1914 Highest 55.777 m, 1960
  • Each year, lowest to highest
  • The year so far
  • Lowest in our series
  • Highest in our series
The lowest and highest daily average of the Ottawa River at Mattawa in each year from 1910 to 2025 with a value on at least 300 days, and in 2026 so far. The lowest daily average in our series since 30 April 1906 was 49.949 m, on 6 October 1914 and 6 other days. The highest was 55.777 m, on 15 May 1960.
Table: The lowest and highest daily average of each year
YearLowest daily average (m)DayHighest daily average (m)DayDays with a value
50.129 m52.299 m365
50.023 m54.076 m365
50.285 m53.455 m366
50.559 m53.577 m365
49.949 m52.296 m365
50.163 m52.02 m365
50.41 m54.06 m366
50.41 m52.69 m365
50.77 m54.28 m365
50.38 m52.57 m366
50.32 m53.91 m365
50.47 m54.83 m365
50.28 m52.91 m365
50.59 m52.63 m366
50.71 m52.72 m365
50.47 m53.18 m365
50.99 m52.63 m365
51.02 m55.56 m366
50.89 m53.67 m365
50.53 m54.03 m365
50.62 m52.05 m365
50.96 m53.82 m366
50.477 m54.037 m365
50.538 m54.387 m365
50.727 m52.281 m365
50.757 m54.433 m366
50.727 m53.223 m365
50.849 m53.961 m365
50.745 m53.756 m365
50.516 m53.884 m366
50.635 m54.131 m365
50.30 m53.064 m365
50.657 m53.208 m365
50.312 m52.888 m366
50.58 m54.46 m365
50.611 m53.22 m365
50.684 m55.591 m365
50.51 m52.577 m366
50.66 m53.327 m365
50.76 m53.455 m365
51.382 m54.473 m365
51.193 m53.689 m366
51.65 m54.14 m365
50.684 m54.262 m365
50.958 m53.351 m365
50.218 m53.869 m366
51.013 m54.631 m365
50.257 m53.077 m365
49.977 m53.226 m365
51.44 m55.777 m366
51.434 m53.037 m365
51.516 m53.311 m365
50.876 m52.912 m365
50.778 m53.534 m366
50.215 m54.00 m365
51.726 m54.186 m365
52.001 m54.384 m365
51.208 m53.046 m366
51.227 m53.573 m365
51.08 m53.894 m365
51.059 m53.019 m365
51.031 m53.168 m366
51.772 m53.866 m365
51.303 m54.061 m365
50.751 m53.372 m365
51.40 m54.025 m366
51.425 m53.692 m365
50.794 m52.991 m365
51.554 m54.845 m365
51.212 m53.88 m366
51.778 m54.05 m365
50.691 m53.062 m365
51.617 m54.337 m365
51.242 m53.534 m366
51.209 m53.765 m365
51.065 m53.301 m365
50.904 m52.97 m365
51.004 m53.725 m366
51.087 m53.917 m365
51.183 m53.879 m365
51.146 m53.277 m365
50.583 m53.186 m366
50.528 m53.402 m365
50.62 m53.221 m365
50.974 m53.878 m365
50.73 m53.885 m366
50.877 m53.592 m356
50.634 m53.059 m365
50.684 m53.413 m357
51.804 m53.021 m366
50.51 m53.729 m365
51.252 m53.851 m365
51.108 m53.438 m365
51.30 m54.045 m366
50.894 m53.007 m365
51.361 m53.401 m365
51.268 m53.369 m365
50.931 m53.477 m366
51.313 m53.833 m365
51.205 m53.217 m365
51.106 m53.182 m365
51.825 m53.474 m366
51.35 m54.144 m363
50.809 m54.328 m365
50.936 m53.58 m363
52.146 m53.328 m366
51.395 m53.949 m365
50.441 m53.809 m365
51.157 m55.548 m363
51.144 m53.582 m366
51.327 m53.036 m365
51.317 m53.69 m365
51.014 m54.655 m365
51.411 m54.042 m366
51.69 m54.321 m365
so far, provisional52.199 m52.414 m46

Each year from January to December, weekly averages

Each year from January to December, weekly averages 52 m 54 m 2026 so far
  • The year so far
  • , the year before
  • Other years
  • Normal range for the week
The weekly averages of the Ottawa River at Mattawa in each year from 1986 to 2025 with a value in at least 26 weeks, and in 2026 so far, on one axis from January to December, with the normal range for each week. Each week is 7 days counted from 1 January (in a leap year, the weeks after 29 February start a day earlier), the last to 31 December.
Table: Each year from January to December, weekly averages
Week so far Weekly average (m)Normal range (m)
to no value50.821 m to 52.903 m
to no value50.821 m to 52.925 m
to no value50.821 m to 52.946 m
to no value50.818 m to 52.952 m
to no value50.807 m to 52.970 m
to no value50.800 m to 52.951 m
to no value50.794 m to 52.901 m
to no value50.794 m to 52.863 m
to no value50.782 m to 52.811 m
to no value50.770 m to 52.699 m
to no value50.740 m to 52.543 m
to no value50.740 m to 52.375 m
to no value50.710 m to 52.296 m
to no value50.684 m to 52.373 m
to no value50.726 m to 52.589 m
to no value50.891 m to 53.039 m
to no value51.284 m to 53.500 m
to no value51.655 m to 53.717 m
to no value51.840 m to 53.850 m
to no value51.867 m to 53.833 m
to no value51.930 m to 53.718 m
to no value51.960 m to 53.609 m
to no value51.786 m to 53.413 m
to no value51.619 m to 53.180 m
to no value51.488 m to 53.074 m
to no value51.320 m to 52.976 m
to no value51.220 m to 52.894 m
to no value51.109 m to 52.776 m
to no value51.016 m to 52.729 m
to no value50.986 m to 52.707 m
to no value50.940 m to 52.678 m
to no value50.894 m to 52.658 m
to no value50.882 m to 52.644 m
to no value50.849 m to 52.628 m
to no value50.815 m to 52.600 m
to no value50.778 m to 52.612 m
to 52.386 m50.742 m to 52.640 m
to 52.349 m50.711 m to 52.659 m
to 52.242 m50.710 m to 52.677 m
to 52.243 m50.695 m to 52.702 m
to 52.270 m50.708 m to 52.772 m
to 52.307 m50.711 m to 52.905 m
to no value50.733 m to 53.159 m
to no value50.740 m to 53.211 m
to no value50.740 m to 53.128 m
to no value50.799 m to 53.086 m
to no value50.800 m to 53.050 m
to no value50.803 m to 53.046 m
to no value50.830 m to 53.000 m
to no value50.855 m to 52.939 m
to no value50.854 m to 52.905 m
to no value50.833 m to 52.882 m
Every year
YearDays with a valueDays below the normal range
to 470
3650
3660
3650
3650
3650
3660
3630
36515
3650
3660
3630
3650
3630
3660
3650
3650
3650
3660
3650
3650
3650
3660
3651
3650
3652
3660
3571
3651
3560
3661
3650
3652
36512
3669
3650
3650
3650
3660
3650
3650
3650
3660
3650
3650
3650
3660
3650
3650
3650
3660
3651
3650
3650
3660
3650
3650
3650
3661
3650
3650
3654
3660
3656
3650
3651
3660
3654
36530
3650
3669
3652
36519
3651
3660
3650
36522
36549
366204
36576
365104
365140
366136
36587
365138
36537
366108
3657
36532
36541
36651
365104
365136
365128
36634
365151
36532
3650
3660
36512
36579
36523
36674
365159
365165
365275
366172
3657
36553
2345
36683
365175
365235
365125
366149
365239
365194
26515
360
974

How it compares

That is within the normal range for the date.

Records

  • Highest daily average in our series since 30 April 1906: 55.777 m on 15 May 1960.
  • Lowest daily average in our series since 30 April 1906: 49.949 m on 6 October 1914.

Also on this water

About this gauge

Mattawa is a gauge on the Ottawa River in Canada.

It lies at 46.3204° N, 78.7108° W.

Its readings come from the Water Survey of Canada (Environment and Climate Change Canada).

Our readings for this gauge go back to 30 April 1906.

The Water Survey of Canada publishes its real-time readings as preliminary data that it reviews and approves later.

The newest reading is provisional: the source may still correct it.

About these figures

The normal range for 25 October is 50.73 m to 53.16 m: the 10th to 90th percentile of the daily averages from 18 October to 1 November in 116 years between 1906 and 2025.

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Sources