Tholon water level at Senan today

Is the Tholon at Senan within its normal range for the date?

The Tholon at Senan read 0.18 m at 20:30 CET on 26 October 2026.

NowHistoryThis dateBy year

Level now

within the normal range for the date

0.18 m

20:30 CET on 26 October 2026Provisional

within the normal range for the date

The normal range for 26 October is 0.18 m to 0.37 m: the 10th to 90th percentile of the daily highs from 19 October to 2 November in 15 years between 2011 and 2025.

Table: where the water stands

Level	Value
Newest reading	0.18 m, 20:30 CET on 26 October 2026
Normal range for the date	0.18 m to 0.37 m
Median for the date	0.23 m

Past day: +0.004 m
Past week: +0.008 m

The gauge reads the height of the water above a fixed zero, not the depth of the river. Its zero lies at 91.571 m above NGF-IGN69 (the French sea-level datum).

Level history

within the normal range for the date

On 25 October 2026 the Tholon at Senan averaged 0.255 m.

Three monthsOne yearTen yearsAll time

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

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

Daily highs of the Tholon at Senan 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

Day	Daily high (m)	Normal range	Median	A year earlier
28 July 2026	0.113 m	0.161 m to 0.248 m	0.186 m	0.171 m
29 July 2026	0.114 m	0.160 m to 0.247 m	0.185 m	0.171 m
30 July 2026	0.114 m	0.160 m to 0.246 m	0.184 m	0.168 m
31 July 2026	0.121 m	0.160 m to 0.244 m	0.183 m	0.166 m
1 August 2026	0.123 m	0.161 m to 0.244 m	0.182 m	0.191 m
2 August 2026	0.120 m	0.160 m to 0.244 m	0.182 m	0.176 m
3 August 2026	0.118 m	0.159 m to 0.243 m	0.181 m	0.167 m
4 August 2026	0.126 m	0.158 m to 0.238 m	0.181 m	0.166 m
5 August 2026	0.126 m	0.157 m to 0.234 m	0.181 m	0.161 m
6 August 2026	0.120 m	0.156 m to 0.234 m	0.181 m	0.161 m
7 August 2026	0.121 m	0.155 m to 0.236 m	0.180 m	0.164 m
8 August 2026	0.123 m	0.155 m to 0.234 m	0.180 m	0.161 m
9 August 2026	0.123 m	0.155 m to 0.231 m	0.180 m	0.159 m
10 August 2026	0.124 m	0.155 m to 0.222 m	0.180 m	0.158 m
11 August 2026	0.128 m	0.155 m to 0.222 m	0.180 m	0.157 m
12 August 2026	0.125 m	0.155 m to 0.221 m	0.180 m	0.155 m
13 August 2026	0.124 m	0.155 m to 0.219 m	0.181 m	0.155 m
14 August 2026	0.120 m	0.155 m to 0.219 m	0.181 m	0.155 m
15 August 2026	0.121 m	0.155 m to 0.218 m	0.181 m	0.153 m
16 August 2026	0.122 m	0.155 m to 0.215 m	0.181 m	0.153 m
17 August 2026	0.125 m	0.155 m to 0.214 m	0.181 m	0.153 m
18 August 2026	0.126 m	0.155 m to 0.215 m	0.180 m	0.154 m
19 August 2026	0.125 m	0.155 m to 0.216 m	0.180 m	0.158 m
20 August 2026	0.124 m	0.155 m to 0.218 m	0.179 m	0.231 m
21 August 2026	0.128 m	0.155 m to 0.217 m	0.179 m	0.211 m
22 August 2026	0.133 m	0.155 m to 0.214 m	0.179 m	0.198 m
23 August 2026	0.131 m	0.154 m to 0.214 m	0.179 m	0.167 m
24 August 2026	0.131 m	0.154 m to 0.213 m	0.179 m	0.163 m
25 August 2026	0.133 m	0.154 m to 0.211 m	0.179 m	0.162 m
26 August 2026	0.128 m	0.154 m to 0.211 m	0.178 m	0.180 m
27 August 2026	0.154 m	0.154 m to 0.211 m	0.178 m	0.169 m
28 August 2026	0.231 m	0.153 m to 0.211 m	0.177 m	0.164 m
29 August 2026	0.164 m	0.153 m to 0.213 m	0.176 m	0.227 m
30 August 2026	0.144 m	0.153 m to 0.214 m	0.175 m	0.197 m
31 August 2026	0.141 m	0.152 m to 0.215 m	0.175 m	0.203 m
1 September 2026	0.140 m	0.152 m to 0.215 m	0.175 m	0.190 m
2 September 2026	0.139 m	0.152 m to 0.214 m	0.175 m	0.183 m
3 September 2026	0.136 m	0.152 m to 0.213 m	0.175 m	0.183 m
4 September 2026	0.132 m	0.152 m to 0.214 m	0.175 m	0.181 m
5 September 2026	0.130 m	0.152 m to 0.214 m	0.175 m	0.170 m
6 September 2026	0.135 m	0.152 m to 0.215 m	0.175 m	0.167 m
7 September 2026	0.131 m	0.152 m to 0.222 m	0.175 m	0.163 m
8 September 2026	0.128 m	0.152 m to 0.236 m	0.175 m	0.161 m
9 September 2026	0.130 m	0.152 m to 0.240 m	0.175 m	0.160 m
10 September 2026	0.132 m	0.152 m to 0.242 m	0.175 m	0.161 m
11 September 2026	0.133 m	0.152 m to 0.244 m	0.176 m	0.160 m
12 September 2026	0.133 m	0.153 m to 0.245 m	0.176 m	0.161 m
13 September 2026	0.132 m	0.153 m to 0.244 m	0.176 m	0.167 m
14 September 2026	0.129 m	0.154 m to 0.244 m	0.176 m	0.232 m
15 September 2026	0.128 m	0.155 m to 0.244 m	0.177 m	0.176 m
16 September 2026	0.126 m	0.156 m to 0.244 m	0.177 m	0.170 m
17 September 2026	0.127 m	0.157 m to 0.245 m	0.178 m	0.160 m
18 September 2026	0.135 m	0.158 m to 0.245 m	0.180 m	0.160 m
19 September 2026	0.132 m	0.158 m to 0.243 m	0.182 m	0.159 m
20 September 2026	0.132 m	0.158 m to 0.247 m	0.185 m	0.186 m
21 September 2026	0.132 m	0.158 m to 0.250 m	0.186 m	0.190 m
22 September 2026	0.131 m	0.158 m to 0.250 m	0.186 m	0.201 m
23 September 2026	0.144 m	0.158 m to 0.249 m	0.186 m	0.220 m
24 September 2026	0.134 m	0.158 m to 0.250 m	0.186 m	0.226 m
25 September 2026	0.134 m	0.158 m to 0.257 m	0.187 m	0.222 m
26 September 2026	0.133 m	0.158 m to 0.254 m	0.187 m	0.203 m
27 September 2026	0.137 m	0.158 m to 0.257 m	0.188 m	0.196 m
28 September 2026	0.136 m	0.158 m to 0.258 m	0.188 m	0.175 m
29 September 2026	0.134 m	0.158 m to 0.263 m	0.188 m	0.176 m
30 September 2026	0.176 m	0.158 m to 0.265 m	0.188 m	0.173 m
1 October 2026	0.136 m	0.158 m to 0.277 m	0.189 m	0.170 m
2 October 2026	0.136 m	0.158 m to 0.283 m	0.190 m	0.169 m
3 October 2026	0.138 m	0.158 m to 0.294 m	0.191 m	0.194 m
4 October 2026	0.138 m	0.158 m to 0.297 m	0.191 m	0.191 m
5 October 2026	0.140 m	0.158 m to 0.297 m	0.191 m	0.188 m
6 October 2026	0.138 m	0.158 m to 0.298 m	0.191 m	0.178 m
7 October 2026	0.141 m	0.158 m to 0.300 m	0.192 m	0.175 m
8 October 2026	0.158 m	0.158 m to 0.314 m	0.196 m	0.169 m
9 October 2026	0.150 m	0.160 m to 0.322 m	0.200 m	0.168 m
10 October 2026	0.153 m	0.161 m to 0.344 m	0.198 m	0.169 m
11 October 2026	0.147 m	0.162 m to 0.360 m	0.200 m	0.166 m
12 October 2026	0.144 m	0.164 m to 0.364 m	0.202 m	0.167 m
13 October 2026	0.143 m	0.164 m to 0.364 m	0.203 m	0.178 m
14 October 2026	0.146 m	0.165 m to 0.364 m	0.210 m	0.166 m
15 October 2026	0.147 m	0.166 m to 0.362 m	0.210 m	0.163 m
16 October 2026	0.147 m	0.166 m to 0.359 m	0.212 m	0.164 m
17 October 2026	0.146 m	0.167 m to 0.357 m	0.212 m	0.164 m
18 October 2026	0.143 m	0.168 m to 0.357 m	0.214 m	0.164 m
19 October 2026	0.177 m	0.169 m to 0.357 m	0.216 m	0.188 m
20 October 2026	0.163 m	0.169 m to 0.362 m	0.218 m	0.177 m
21 October 2026	0.161 m	0.170 m to 0.367 m	0.224 m	0.191 m
22 October 2026	0.161 m	0.171 m to 0.368 m	0.224 m	0.284 m
23 October 2026	0.179 m	0.172 m to 0.368 m	0.224 m	0.290 m
24 October 2026	0.168 m	0.174 m to 0.368 m	0.224 m	0.263 m
25 October 2026	0.255 m	0.176 m to 0.368 m	0.227 m	0.199 m

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

Level
Below the normal range
Above the normal range
Normal range for the date
Median for the date
Our record

Daily highs of the Tholon at Senan 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

Day	Daily high (m)	Normal range	Median
25 October 2025	0.199 m	0.176 m to 0.368 m	0.227 m
26 October 2025	0.213 m	0.178 m to 0.368 m	0.230 m
27 October 2025	0.210 m	0.179 m to 0.370 m	0.232 m
28 October 2025	0.232 m	0.183 m to 0.376 m	0.236 m
29 October 2025	0.219 m	0.183 m to 0.389 m	0.236 m
30 October 2025	0.204 m	0.183 m to 0.401 m	0.237 m
31 October 2025	0.216 m	0.183 m to 0.401 m	0.241 m
1 November 2025	0.191 m	0.183 m to 0.401 m	0.243 m
2 November 2025	0.210 m	0.183 m to 0.402 m	0.247 m
3 November 2025	0.208 m	0.183 m to 0.406 m	0.249 m
4 November 2025	0.198 m	0.183 m to 0.406 m	0.251 m
5 November 2025	0.226 m	0.184 m to 0.412 m	0.253 m
6 November 2025	0.204 m	0.185 m to 0.418 m	0.259 m
7 November 2025	0.217 m	0.185 m to 0.427 m	0.273 m
8 November 2025	0.184 m	0.186 m to 0.440 m	0.275 m
9 November 2025	0.186 m	0.186 m to 0.444 m	0.276 m
10 November 2025	0.186 m	0.188 m to 0.444 m	0.277 m
11 November 2025	0.186 m	0.191 m to 0.444 m	0.279 m
12 November 2025	0.205 m	0.188 m to 0.444 m	0.279 m
13 November 2025	0.232 m	0.191 m to 0.447 m	0.279 m
14 November 2025	0.185 m	0.191 m to 0.534 m	0.281 m
15 November 2025	0.219 m	0.191 m to 0.540 m	0.280 m
16 November 2025	0.210 m	0.191 m to 0.548 m	0.284 m
17 November 2025	0.197 m	0.191 m to 0.553 m	0.291 m
18 November 2025	0.191 m	0.191 m to 0.548 m	0.294 m
19 November 2025	0.191 m	0.193 m to 0.548 m	0.296 m
20 November 2025	0.198 m	0.192 m to 0.544 m	0.299 m
21 November 2025	0.199 m	0.193 m to 0.544 m	0.307 m
22 November 2025	0.194 m	0.194 m to 0.544 m	0.307 m
23 November 2025	0.224 m	0.194 m to 0.540 m	0.307 m
24 November 2025	0.309 m	0.194 m to 0.539 m	0.306 m
25 November 2025	0.271 m	0.194 m to 0.538 m	0.305 m
26 November 2025	0.232 m	0.195 m to 0.537 m	0.303 m
27 November 2025	0.218 m	0.196 m to 0.535 m	0.305 m
28 November 2025	0.209 m	0.197 m to 0.516 m	0.305 m
29 November 2025	0.252 m	0.200 m to 0.493 m	0.303 m
30 November 2025	0.295 m	0.202 m to 0.491 m	0.299 m
1 December 2025	0.291 m	0.203 m to 0.483 m	0.298 m
2 December 2025	0.232 m	0.203 m to 0.480 m	0.298 m
3 December 2025	0.224 m	0.205 m to 0.480 m	0.299 m
4 December 2025	0.273 m	0.207 m to 0.483 m	0.299 m
5 December 2025	0.227 m	0.208 m to 0.487 m	0.303 m
6 December 2025	0.208 m	0.208 m to 0.491 m	0.299 m
7 December 2025	0.368 m	0.210 m to 0.491 m	0.299 m
8 December 2025	0.421 m	0.215 m to 0.484 m	0.303 m
9 December 2025	0.306 m	0.219 m to 0.492 m	0.306 m
10 December 2025	0.286 m	0.219 m to 0.510 m	0.308 m
11 December 2025	0.274 m	0.219 m to 0.528 m	0.308 m
12 December 2025	0.252 m	0.220 m to 0.536 m	0.308 m
13 December 2025	0.237 m	0.220 m to 0.541 m	0.307 m
14 December 2025	0.224 m	0.221 m to 0.541 m	0.308 m
15 December 2025	0.218 m	0.225 m to 0.546 m	0.313 m
16 December 2025	0.219 m	0.228 m to 0.551 m	0.313 m
17 December 2025	0.214 m	0.230 m to 0.551 m	0.315 m
18 December 2025	0.213 m	0.230 m to 0.551 m	0.313 m
19 December 2025	0.220 m	0.229 m to 0.552 m	0.307 m
20 December 2025	0.229 m	0.227 m to 0.570 m	0.302 m
21 December 2025	0.269 m	0.226 m to 0.597 m	0.302 m
22 December 2025	0.317 m	0.226 m to 0.576 m	0.302 m
23 December 2025	0.262 m	0.227 m to 0.556 m	0.307 m
24 December 2025	0.239 m	0.227 m to 0.551 m	0.302 m
25 December 2025	0.225 m	0.234 m to 0.536 m	0.318 m
26 December 2025	0.217 m	0.234 m to 0.537 m	0.321 m
27 December 2025	0.215 m	0.235 m to 0.537 m	0.325 m
28 December 2025	0.212 m	0.235 m to 0.557 m	0.331 m
29 December 2025	0.212 m	0.236 m to 0.595 m	0.335 m
30 December 2025	0.258 m	0.236 m to 0.599 m	0.332 m
31 December 2025	0.214 m	0.240 m to 0.595 m	0.337 m
1 January 2026	0.213 m	0.240 m to 0.562 m	0.342 m
2 January 2026	0.225 m	0.241 m to 0.562 m	0.346 m
3 January 2026	0.229 m	0.244 m to 0.562 m	0.349 m
4 January 2026	0.217 m	0.245 m to 0.562 m	0.352 m
5 January 2026	0.223 m	0.246 m to 0.557 m	0.354 m
6 January 2026	0.213 m	0.246 m to 0.557 m	0.357 m
7 January 2026	0.225 m	0.247 m to 0.565 m	0.360 m
8 January 2026	0.269 m	0.248 m to 0.597 m	0.360 m
9 January 2026	0.280 m	0.248 m to 0.607 m	0.363 m
10 January 2026	0.263 m	0.249 m to 0.610 m	0.366 m
11 January 2026	0.237 m	0.252 m to 0.607 m	0.367 m
12 January 2026	0.227 m	0.253 m to 0.600 m	0.366 m
13 January 2026	0.226 m	0.254 m to 0.594 m	0.365 m
14 January 2026	0.245 m	0.258 m to 0.586 m	0.365 m
15 January 2026	0.262 m	0.265 m to 0.594 m	0.365 m
16 January 2026	0.267 m	0.266 m to 0.606 m	0.365 m
17 January 2026	0.254 m	0.268 m to 0.606 m	0.365 m
18 January 2026	0.232 m	0.268 m to 0.607 m	0.365 m
19 January 2026	0.224 m	0.268 m to 0.607 m	0.365 m
20 January 2026	0.221 m	0.266 m to 0.607 m	0.365 m
21 January 2026	0.219 m	0.266 m to 0.607 m	0.366 m
22 January 2026	0.218 m	0.265 m to 0.608 m	0.366 m
23 January 2026	0.216 m	0.263 m to 0.620 m	0.375 m
24 January 2026	0.217 m	0.262 m to 0.628 m	0.381 m
25 January 2026	0.216 m	0.261 m to 0.628 m	0.382 m
26 January 2026	0.215 m	0.261 m to 0.663 m	0.387 m
27 January 2026	0.238 m	0.259 m to 0.671 m	0.393 m
28 January 2026	0.289 m	0.259 m to 0.671 m	0.396 m
29 January 2026	0.243 m	0.258 m to 0.679 m	0.402 m
30 January 2026	0.248 m	0.256 m to 0.706 m	0.402 m
31 January 2026	0.231 m	0.256 m to 0.734 m	0.406 m
1 February 2026	0.223 m	0.256 m to 0.734 m	0.407 m
2 February 2026	0.258 m	0.256 m to 0.730 m	0.409 m
3 February 2026	0.269 m	0.255 m to 0.729 m	0.413 m
4 February 2026	0.330 m	0.255 m to 0.729 m	0.421 m
5 February 2026	0.258 m	0.255 m to 0.729 m	0.423 m
6 February 2026	0.245 m	0.254 m to 0.729 m	0.427 m
7 February 2026	0.238 m	0.253 m to 0.731 m	0.430 m
8 February 2026	0.231 m	0.253 m to 0.731 m	0.432 m
9 February 2026	0.229 m	0.253 m to 0.729 m	0.430 m
10 February 2026	0.339 m	0.253 m to 0.722 m	0.427 m
11 February 2026	0.562 m	0.255 m to 0.720 m	0.423 m
12 February 2026	0.623 m	0.255 m to 0.707 m	0.421 m
13 February 2026	0.701 m	0.255 m to 0.700 m	0.419 m
14 February 2026	0.905 m	0.256 m to 0.694 m	0.419 m
15 February 2026	0.979 m	0.256 m to 0.687 m	0.421 m
16 February 2026	0.740 m	0.256 m to 0.686 m	0.427 m
17 February 2026	0.761 m	0.256 m to 0.686 m	0.428 m
18 February 2026	0.783 m	0.256 m to 0.677 m	0.428 m
19 February 2026	0.969 m	0.255 m to 0.676 m	0.424 m
20 February 2026	1.200 m	0.255 m to 0.671 m	0.424 m
21 February 2026	1.039 m	0.255 m to 0.669 m	0.424 m
22 February 2026	0.749 m	0.255 m to 0.646 m	0.422 m
23 February 2026	0.696 m	0.255 m to 0.630 m	0.421 m
24 February 2026	0.680 m	0.252 m to 0.628 m	0.419 m
25 February 2026	0.663 m	0.250 m to 0.619 m	0.419 m
26 February 2026	0.667 m	0.249 m to 0.613 m	0.423 m
27 February 2026	0.613 m	0.247 m to 0.620 m	0.427 m
28 February 2026	0.590 m	0.245 m to 0.621 m	0.432 m
1 March 2026	0.558 m	0.244 m to 0.620 m	0.434 m
2 March 2026	0.580 m	0.244 m to 0.614 m	0.428 m
3 March 2026	0.521 m	0.245 m to 0.611 m	0.423 m
4 March 2026	0.495 m	0.245 m to 0.600 m	0.421 m
5 March 2026	0.490 m	0.245 m to 0.600 m	0.418 m
6 March 2026	0.469 m	0.247 m to 0.584 m	0.411 m
7 March 2026	0.450 m	0.248 m to 0.584 m	0.411 m
8 March 2026	0.475 m	0.249 m to 0.590 m	0.409 m
9 March 2026	0.423 m	0.251 m to 0.590 m	0.410 m
10 March 2026	0.430 m	0.251 m to 0.584 m	0.406 m
11 March 2026	0.452 m	0.251 m to 0.578 m	0.404 m
12 March 2026	0.446 m	0.254 m to 0.572 m	0.402 m
13 March 2026	0.521 m	0.254 m to 0.570 m	0.397 m
14 March 2026	0.645 m	0.254 m to 0.565 m	0.396 m
15 March 2026	0.530 m	0.254 m to 0.560 m	0.393 m
16 March 2026	0.427 m	0.254 m to 0.548 m	0.392 m
17 March 2026	0.394 m	0.254 m to 0.546 m	0.389 m
18 March 2026	0.368 m	0.252 m to 0.533 m	0.389 m
19 March 2026	0.353 m	0.252 m to 0.526 m	0.385 m
20 March 2026	0.337 m	0.252 m to 0.512 m	0.378 m
21 March 2026	0.330 m	0.255 m to 0.508 m	0.371 m
22 March 2026	0.333 m	0.253 m to 0.503 m	0.366 m
23 March 2026	0.317 m	0.252 m to 0.498 m	0.363 m
24 March 2026	0.307 m	0.253 m to 0.494 m	0.360 m
25 March 2026	0.311 m	0.255 m to 0.480 m	0.360 m
26 March 2026	0.308 m	0.260 m to 0.472 m	0.357 m
27 March 2026	0.299 m	0.259 m to 0.462 m	0.355 m
28 March 2026	0.311 m	0.259 m to 0.462 m	0.348 m
29 March 2026	0.303 m	0.257 m to 0.471 m	0.347 m
30 March 2026	0.328 m	0.256 m to 0.458 m	0.345 m
31 March 2026	0.286 m	0.256 m to 0.451 m	0.345 m
1 April 2026	0.285 m	0.253 m to 0.448 m	0.343 m
2 April 2026	0.320 m	0.253 m to 0.451 m	0.331 m
3 April 2026	0.342 m	0.253 m to 0.473 m	0.328 m
4 April 2026	0.269 m	0.253 m to 0.483 m	0.324 m
5 April 2026	0.269 m	0.253 m to 0.494 m	0.319 m
6 April 2026	0.262 m	0.253 m to 0.487 m	0.317 m
7 April 2026	0.291 m	0.254 m to 0.483 m	0.314 m
8 April 2026	0.253 m	0.253 m to 0.463 m	0.309 m
9 April 2026	0.307 m	0.253 m to 0.460 m	0.306 m
10 April 2026	0.247 m	0.251 m to 0.454 m	0.303 m
11 April 2026	0.248 m	0.250 m to 0.448 m	0.302 m
12 April 2026	0.256 m	0.249 m to 0.430 m	0.299 m
13 April 2026	0.250 m	0.248 m to 0.414 m	0.294 m
14 April 2026	0.246 m	0.249 m to 0.410 m	0.292 m
15 April 2026	0.287 m	0.248 m to 0.403 m	0.288 m
16 April 2026	0.234 m	0.247 m to 0.398 m	0.286 m
17 April 2026	0.233 m	0.246 m to 0.391 m	0.282 m
18 April 2026	0.231 m	0.246 m to 0.389 m	0.284 m
19 April 2026	0.231 m	0.245 m to 0.388 m	0.284 m
20 April 2026	0.228 m	0.243 m to 0.383 m	0.282 m
21 April 2026	0.228 m	0.243 m to 0.389 m	0.282 m
22 April 2026	0.226 m	0.241 m to 0.391 m	0.284 m
23 April 2026	0.224 m	0.239 m to 0.403 m	0.284 m
24 April 2026	0.222 m	0.239 m to 0.421 m	0.285 m
25 April 2026	0.244 m	0.236 m to 0.426 m	0.286 m
26 April 2026	0.217 m	0.233 m to 0.438 m	0.286 m
27 April 2026	0.216 m	0.231 m to 0.482 m	0.287 m
28 April 2026	0.257 m	0.230 m to 0.533 m	0.288 m
29 April 2026	0.212 m	0.228 m to 0.541 m	0.288 m
30 April 2026	0.210 m	0.228 m to 0.541 m	0.287 m
1 May 2026	0.220 m	0.225 m to 0.541 m	0.287 m
2 May 2026	0.250 m	0.224 m to 0.541 m	0.287 m
3 May 2026	0.232 m	0.221 m to 0.541 m	0.286 m
4 May 2026	0.249 m	0.221 m to 0.541 m	0.286 m
5 May 2026	0.248 m	0.219 m to 0.520 m	0.286 m
6 May 2026	0.250 m	0.217 m to 0.506 m	0.281 m
7 May 2026	0.230 m	0.217 m to 0.520 m	0.281 m
8 May 2026	0.218 m	0.216 m to 0.506 m	0.280 m
9 May 2026	0.213 m	0.216 m to 0.493 m	0.278 m
10 May 2026	0.224 m	0.213 m to 0.473 m	0.280 m
11 May 2026	0.254 m	0.212 m to 0.467 m	0.280 m
12 May 2026	0.234 m	0.212 m to 0.447 m	0.280 m
13 May 2026	0.220 m	0.211 m to 0.447 m	0.276 m
14 May 2026	0.235 m	0.210 m to 0.447 m	0.276 m
15 May 2026	0.213 m	0.208 m to 0.451 m	0.280 m
16 May 2026	0.212 m	0.208 m to 0.454 m	0.278 m
17 May 2026	0.257 m	0.193 m to 0.453 m	0.273 m
18 May 2026	0.249 m	0.190 m to 0.448 m	0.272 m
19 May 2026	0.226 m	0.190 m to 0.441 m	0.271 m
20 May 2026	0.212 m	0.190 m to 0.435 m	0.269 m
21 May 2026	0.207 m	0.188 m to 0.435 m	0.265 m
22 May 2026	0.204 m	0.187 m to 0.426 m	0.262 m
23 May 2026	0.197 m	0.186 m to 0.411 m	0.260 m
24 May 2026	0.195 m	0.185 m to 0.411 m	0.258 m
25 May 2026	0.190 m	0.184 m to 0.421 m	0.254 m
26 May 2026	0.187 m	0.183 m to 0.439 m	0.249 m
27 May 2026	0.185 m	0.182 m to 0.449 m	0.245 m
28 May 2026	0.184 m	0.182 m to 0.439 m	0.242 m
29 May 2026	0.184 m	0.182 m to 0.433 m	0.242 m
30 May 2026	0.181 m	0.182 m to 0.421 m	0.242 m
31 May 2026	0.181 m	0.182 m to 0.411 m	0.240 m
1 June 2026	0.180 m	0.181 m to 0.410 m	0.238 m
2 June 2026	0.205 m	0.180 m to 0.411 m	0.235 m
3 June 2026	0.180 m	0.179 m to 0.435 m	0.234 m
4 June 2026	0.188 m	0.180 m to 0.439 m	0.232 m
5 June 2026	0.185 m	0.179 m to 0.439 m	0.232 m
6 June 2026	0.184 m	0.179 m to 0.439 m	0.230 m
7 June 2026	0.180 m	0.178 m to 0.439 m	0.229 m
8 June 2026	0.181 m	0.174 m to 0.435 m	0.227 m
9 June 2026	0.206 m	0.173 m to 0.435 m	0.227 m
10 June 2026	0.182 m	0.173 m to 0.422 m	0.226 m
11 June 2026	0.181 m	0.171 m to 0.422 m	0.226 m
12 June 2026	0.180 m	0.170 m to 0.422 m	0.225 m
13 June 2026	0.184 m	0.170 m to 0.432 m	0.220 m
14 June 2026	0.181 m	0.170 m to 0.439 m	0.219 m
15 June 2026	0.175 m	0.170 m to 0.456 m	0.219 m
16 June 2026	0.172 m	0.170 m to 0.448 m	0.216 m
17 June 2026	0.170 m	0.170 m to 0.435 m	0.216 m
18 June 2026	0.169 m	0.170 m to 0.428 m	0.215 m
19 June 2026	0.168 m	0.168 m to 0.428 m	0.213 m
20 June 2026	0.166 m	0.167 m to 0.427 m	0.212 m
21 June 2026	0.167 m	0.166 m to 0.419 m	0.211 m
22 June 2026	0.169 m	0.166 m to 0.419 m	0.210 m
23 June 2026	0.162 m	0.166 m to 0.419 m	0.210 m
24 June 2026	0.158 m	0.166 m to 0.419 m	0.210 m
25 June 2026	0.157 m	0.166 m to 0.403 m	0.210 m
26 June 2026	0.156 m	0.166 m to 0.403 m	0.209 m
27 June 2026	0.160 m	0.166 m to 0.388 m	0.206 m
28 June 2026	0.171 m	0.166 m to 0.362 m	0.206 m
29 June 2026	0.169 m	0.166 m to 0.358 m	0.204 m
30 June 2026	0.164 m	0.165 m to 0.343 m	0.203 m
1 July 2026	0.163 m	0.165 m to 0.335 m	0.201 m
2 July 2026	0.159 m	0.164 m to 0.325 m	0.201 m
3 July 2026	0.159 m	0.165 m to 0.325 m	0.200 m
4 July 2026	0.160 m	0.164 m to 0.314 m	0.198 m
5 July 2026	0.158 m	0.164 m to 0.314 m	0.197 m
6 July 2026	0.157 m	0.163 m to 0.307 m	0.196 m
7 July 2026	0.154 m	0.163 m to 0.309 m	0.196 m
8 July 2026	0.152 m	0.163 m to 0.309 m	0.195 m
9 July 2026	0.151 m	0.162 m to 0.303 m	0.195 m
10 July 2026	0.151 m	0.162 m to 0.300 m	0.195 m
11 July 2026	0.156 m	0.161 m to 0.293 m	0.195 m
12 July 2026	0.147 m	0.161 m to 0.290 m	0.192 m
13 July 2026	0.146 m	0.160 m to 0.269 m	0.191 m
14 July 2026	0.147 m	0.160 m to 0.269 m	0.192 m
15 July 2026	0.147 m	0.160 m to 0.267 m	0.191 m
16 July 2026	0.148 m	0.160 m to 0.269 m	0.191 m
17 July 2026	0.169 m	0.160 m to 0.267 m	0.189 m
18 July 2026	0.164 m	0.160 m to 0.265 m	0.188 m
19 July 2026	0.154 m	0.161 m to 0.263 m	0.188 m
20 July 2026	0.151 m	0.161 m to 0.263 m	0.188 m
21 July 2026	0.151 m	0.161 m to 0.263 m	0.188 m
22 July 2026	0.138 m	0.161 m to 0.260 m	0.188 m
23 July 2026	0.125 m	0.161 m to 0.253 m	0.188 m
24 July 2026	0.119 m	0.161 m to 0.253 m	0.187 m
25 July 2026	0.117 m	0.161 m to 0.253 m	0.186 m
26 July 2026	0.116 m	0.161 m to 0.250 m	0.186 m
27 July 2026	0.113 m	0.161 m to 0.248 m	0.186 m
28 July 2026	0.113 m	0.161 m to 0.248 m	0.186 m
29 July 2026	0.114 m	0.160 m to 0.247 m	0.185 m
30 July 2026	0.114 m	0.160 m to 0.246 m	0.184 m
31 July 2026	0.121 m	0.160 m to 0.244 m	0.183 m
1 August 2026	0.123 m	0.161 m to 0.244 m	0.182 m
2 August 2026	0.120 m	0.160 m to 0.244 m	0.182 m
3 August 2026	0.118 m	0.159 m to 0.243 m	0.181 m
4 August 2026	0.126 m	0.158 m to 0.238 m	0.181 m
5 August 2026	0.126 m	0.157 m to 0.234 m	0.181 m
6 August 2026	0.120 m	0.156 m to 0.234 m	0.181 m
7 August 2026	0.121 m	0.155 m to 0.236 m	0.180 m
8 August 2026	0.123 m	0.155 m to 0.234 m	0.180 m
9 August 2026	0.123 m	0.155 m to 0.231 m	0.180 m
10 August 2026	0.124 m	0.155 m to 0.222 m	0.180 m
11 August 2026	0.128 m	0.155 m to 0.222 m	0.180 m
12 August 2026	0.125 m	0.155 m to 0.221 m	0.180 m
13 August 2026	0.124 m	0.155 m to 0.219 m	0.181 m
14 August 2026	0.120 m	0.155 m to 0.219 m	0.181 m
15 August 2026	0.121 m	0.155 m to 0.218 m	0.181 m
16 August 2026	0.122 m	0.155 m to 0.215 m	0.181 m
17 August 2026	0.125 m	0.155 m to 0.214 m	0.181 m
18 August 2026	0.126 m	0.155 m to 0.215 m	0.180 m
19 August 2026	0.125 m	0.155 m to 0.216 m	0.180 m
20 August 2026	0.124 m	0.155 m to 0.218 m	0.179 m
21 August 2026	0.128 m	0.155 m to 0.217 m	0.179 m
22 August 2026	0.133 m	0.155 m to 0.214 m	0.179 m
23 August 2026	0.131 m	0.154 m to 0.214 m	0.179 m
24 August 2026	0.131 m	0.154 m to 0.213 m	0.179 m
25 August 2026	0.133 m	0.154 m to 0.211 m	0.179 m
26 August 2026	0.128 m	0.154 m to 0.211 m	0.178 m
27 August 2026	0.154 m	0.154 m to 0.211 m	0.178 m
28 August 2026	0.231 m	0.153 m to 0.211 m	0.177 m
29 August 2026	0.164 m	0.153 m to 0.213 m	0.176 m
30 August 2026	0.144 m	0.153 m to 0.214 m	0.175 m
31 August 2026	0.141 m	0.152 m to 0.215 m	0.175 m
1 September 2026	0.140 m	0.152 m to 0.215 m	0.175 m
2 September 2026	0.139 m	0.152 m to 0.214 m	0.175 m
3 September 2026	0.136 m	0.152 m to 0.213 m	0.175 m
4 September 2026	0.132 m	0.152 m to 0.214 m	0.175 m
5 September 2026	0.130 m	0.152 m to 0.214 m	0.175 m
6 September 2026	0.135 m	0.152 m to 0.215 m	0.175 m
7 September 2026	0.131 m	0.152 m to 0.222 m	0.175 m
8 September 2026	0.128 m	0.152 m to 0.236 m	0.175 m
9 September 2026	0.130 m	0.152 m to 0.240 m	0.175 m
10 September 2026	0.132 m	0.152 m to 0.242 m	0.175 m
11 September 2026	0.133 m	0.152 m to 0.244 m	0.176 m
12 September 2026	0.133 m	0.153 m to 0.245 m	0.176 m
13 September 2026	0.132 m	0.153 m to 0.244 m	0.176 m
14 September 2026	0.129 m	0.154 m to 0.244 m	0.176 m
15 September 2026	0.128 m	0.155 m to 0.244 m	0.177 m
16 September 2026	0.126 m	0.156 m to 0.244 m	0.177 m
17 September 2026	0.127 m	0.157 m to 0.245 m	0.178 m
18 September 2026	0.135 m	0.158 m to 0.245 m	0.180 m
19 September 2026	0.132 m	0.158 m to 0.243 m	0.182 m
20 September 2026	0.132 m	0.158 m to 0.247 m	0.185 m
21 September 2026	0.132 m	0.158 m to 0.250 m	0.186 m
22 September 2026	0.131 m	0.158 m to 0.250 m	0.186 m
23 September 2026	0.144 m	0.158 m to 0.249 m	0.186 m
24 September 2026	0.134 m	0.158 m to 0.250 m	0.186 m
25 September 2026	0.134 m	0.158 m to 0.257 m	0.187 m
26 September 2026	0.133 m	0.158 m to 0.254 m	0.187 m
27 September 2026	0.137 m	0.158 m to 0.257 m	0.188 m
28 September 2026	0.136 m	0.158 m to 0.258 m	0.188 m
29 September 2026	0.134 m	0.158 m to 0.263 m	0.188 m
30 September 2026	0.176 m	0.158 m to 0.265 m	0.188 m
1 October 2026	0.136 m	0.158 m to 0.277 m	0.189 m
2 October 2026	0.136 m	0.158 m to 0.283 m	0.190 m
3 October 2026	0.138 m	0.158 m to 0.294 m	0.191 m
4 October 2026	0.138 m	0.158 m to 0.297 m	0.191 m
5 October 2026	0.140 m	0.158 m to 0.297 m	0.191 m
6 October 2026	0.138 m	0.158 m to 0.298 m	0.191 m
7 October 2026	0.141 m	0.158 m to 0.300 m	0.192 m
8 October 2026	0.158 m	0.158 m to 0.314 m	0.196 m
9 October 2026	0.150 m	0.160 m to 0.322 m	0.200 m
10 October 2026	0.153 m	0.161 m to 0.344 m	0.198 m
11 October 2026	0.147 m	0.162 m to 0.360 m	0.200 m
12 October 2026	0.144 m	0.164 m to 0.364 m	0.202 m
13 October 2026	0.143 m	0.164 m to 0.364 m	0.203 m
14 October 2026	0.146 m	0.165 m to 0.364 m	0.210 m
15 October 2026	0.147 m	0.166 m to 0.362 m	0.210 m
16 October 2026	0.147 m	0.166 m to 0.359 m	0.212 m
17 October 2026	0.146 m	0.167 m to 0.357 m	0.212 m
18 October 2026	0.143 m	0.168 m to 0.357 m	0.214 m
19 October 2026	0.177 m	0.169 m to 0.357 m	0.216 m
20 October 2026	0.163 m	0.169 m to 0.362 m	0.218 m
21 October 2026	0.161 m	0.170 m to 0.367 m	0.224 m
22 October 2026	0.161 m	0.171 m to 0.368 m	0.224 m
23 October 2026	0.179 m	0.172 m to 0.368 m	0.224 m
24 October 2026	0.168 m	0.174 m to 0.368 m	0.224 m
25 October 2026	0.255 m	0.176 m to 0.368 m	0.227 m

The last 10 years, weekly averages

Level
Our record

Weekly averages of the Tholon at Senan from the week of 24 October 2016 to 25 October 2026.

Table: The last 10 years, weekly averages

Week starting	Weekly average of daily highs (m)
24 October 2016	0.265 m
31 October 2016	0.261 m
7 November 2016	0.318 m
14 November 2016	0.348 m
21 November 2016	0.343 m
28 November 2016	0.294 m
5 December 2016	0.282 m
12 December 2016	0.281 m
19 December 2016	0.279 m
26 December 2016	0.251 m
2 January 2017	0.246 m
9 January 2017	0.285 m
16 January 2017	0.276 m
23 January 2017	0.244 m
30 January 2017	0.269 m
6 February 2017	0.281 m
13 February 2017	0.268 m
20 February 2017	0.256 m
27 February 2017	0.362 m
6 March 2017	0.458 m
13 March 2017	0.324 m
20 March 2017	0.392 m
27 March 2017	0.340 m
3 April 2017	0.294 m
10 April 2017	0.268 m
17 April 2017	0.261 m
24 April 2017	0.257 m
1 May 2017	0.276 m
8 May 2017	0.259 m
15 May 2017	0.269 m
22 May 2017	0.232 m
29 May 2017	0.278 m
5 June 2017	0.217 m
12 June 2017	0.178 m
19 June 2017	0.172 m
26 June 2017	0.209 m
3 July 2017	0.195 m
10 July 2017	0.196 m
17 July 2017	0.194 m
24 July 2017	0.188 m
31 July 2017	0.217 m
7 August 2017	0.182 m
14 August 2017	0.186 m
21 August 2017	0.179 m
28 August 2017	0.171 m
4 September 2017	0.169 m
11 September 2017	0.190 m
18 September 2017	0.184 m
25 September 2017	0.190 m
2 October 2017	0.202 m
9 October 2017	0.180 m
16 October 2017	0.188 m
23 October 2017	0.180 m
30 October 2017	0.215 m
6 November 2017	0.262 m
13 November 2017	0.228 m
20 November 2017	0.214 m
27 November 2017	0.232 m
4 December 2017	0.233 m
11 December 2017	0.294 m
18 December 2017	0.299 m
25 December 2017	0.317 m
1 January 2018	0.499 m
8 January 2018	0.370 m
15 January 2018	0.647 m
22 January 2018	1.040 m
29 January 2018	0.785 m
5 February 2018	0.703 m
12 February 2018	0.750 m
19 February 2018	0.616 m
26 February 2018	0.599 m
5 March 2018	0.540 m
12 March 2018	0.613 m
19 March 2018	0.451 m
26 March 2018	0.452 m
2 April 2018	0.428 m
9 April 2018	0.399 m
16 April 2018	0.347 m
23 April 2018	0.318 m
30 April 2018	0.306 m
7 May 2018	0.256 m
14 May 2018	0.391 m
21 May 2018	0.340 m
28 May 2018	0.279 m
4 June 2018	0.458 m
11 June 2018	0.284 m
18 June 2018	0.235 m
25 June 2018	0.210 m
2 July 2018	0.253 m
9 July 2018	0.214 m
16 July 2018	0.208 m
23 July 2018	0.202 m
30 July 2018	0.183 m
6 August 2018	0.185 m
13 August 2018	0.184 m
20 August 2018	0.179 m
27 August 2018	0.178 m
3 September 2018	0.177 m
10 September 2018	0.176 m
17 September 2018	0.182 m
24 September 2018	0.182 m
1 October 2018	0.181 m
8 October 2018	0.176 m
15 October 2018	0.178 m
22 October 2018	0.210 m
29 October 2018	0.278 m
5 November 2018	0.305 m
12 November 2018	0.347 m
19 November 2018	0.339 m
26 November 2018	0.355 m
3 December 2018	0.351 m
10 December 2018	0.306 m
17 December 2018	0.339 m
24 December 2018	0.293 m
31 December 2018	0.257 m
7 January 2019	0.256 m
14 January 2019	0.276 m
21 January 2019	0.315 m
28 January 2019	0.433 m
4 February 2019	0.412 m
11 February 2019	0.392 m
18 February 2019	0.335 m
25 February 2019	0.325 m
4 March 2019	0.381 m
11 March 2019	0.466 m
18 March 2019	0.362 m
25 March 2019	0.315 m
1 April 2019	0.343 m
8 April 2019	0.302 m
15 April 2019	0.264 m
22 April 2019	0.292 m
29 April 2019	0.293 m
6 May 2019	0.436 m
13 May 2019	0.300 m
20 May 2019	0.318 m
27 May 2019	0.228 m
3 June 2019	0.252 m
10 June 2019	0.216 m
17 June 2019	0.199 m
24 June 2019	0.184 m
1 July 2019	0.196 m
8 July 2019	0.176 m
15 July 2019	0.169 m
22 July 2019	0.173 m
29 July 2019	0.174 m
5 August 2019	0.174 m
12 August 2019	0.177 m
19 August 2019	0.178 m
26 August 2019	0.171 m
2 September 2019	0.176 m
9 September 2019	0.179 m
16 September 2019	0.175 m
23 September 2019	0.192 m
30 September 2019	0.227 m
7 October 2019	0.225 m
14 October 2019	0.381 m
21 October 2019	0.305 m
28 October 2019	0.344 m
4 November 2019	0.383 m
11 November 2019	0.419 m
18 November 2019	0.488 m
25 November 2019	0.483 m
2 December 2019	0.461 m
9 December 2019	0.661 m
16 December 2019	0.712 m
23 December 2019	0.607 m
30 December 2019	0.421 m
6 January 2020	0.394 m
13 January 2020	0.361 m
20 January 2020	0.331 m
27 January 2020	0.407 m
3 February 2020	0.493 m
10 February 2020	0.620 m
17 February 2020	0.535 m
24 February 2020	0.530 m
2 March 2020	0.675 m
9 March 2020	0.563 m
16 March 2020	0.501 m
23 March 2020	0.444 m
30 March 2020	0.396 m
6 April 2020	0.362 m
13 April 2020	0.312 m
20 April 2020	0.275 m
27 April 2020	0.252 m
4 May 2020	0.306 m
11 May 2020	0.394 m
18 May 2020	0.232 m
25 May 2020	0.216 m
1 June 2020	0.222 m
8 June 2020	0.253 m
15 June 2020	0.217 m
22 June 2020	0.201 m
29 June 2020	0.196 m
6 July 2020	0.190 m
13 July 2020	0.199 m
20 July 2020	0.185 m
27 July 2020	0.174 m
3 August 2020	0.180 m
10 August 2020	0.184 m
17 August 2020	0.175 m
24 August 2020	0.169 m
31 August 2020	0.177 m
7 September 2020	0.170 m
14 September 2020	0.171 m
21 September 2020	0.182 m
28 September 2020	0.236 m
5 October 2020	0.221 m
12 October 2020	0.199 m
19 October 2020	0.229 m
26 October 2020	0.231 m
2 November 2020	0.221 m
9 November 2020	0.238 m
16 November 2020	0.244 m
23 November 2020	0.227 m
30 November 2020	0.253 m
7 December 2020	0.275 m
14 December 2020	0.241 m
21 December 2020	0.288 m
28 December 2020	0.331 m
4 January 2021	0.241 m
11 January 2021	0.393 m
18 January 2021	0.446 m
25 January 2021	0.523 m
1 February 2021	0.646 m
8 February 2021	0.579 m
15 February 2021	0.512 m
22 February 2021	0.423 m
1 March 2021	0.370 m
8 March 2021	0.404 m
15 March 2021	0.404 m
22 March 2021	0.311 m
29 March 2021	0.285 m
5 April 2021	0.315 m
12 April 2021	0.324 m
19 April 2021	0.263 m
26 April 2021	0.274 m
3 May 2021	0.361 m
10 May 2021	0.262 m
17 May 2021	0.345 m
24 May 2021	0.270 m
31 May 2021	0.301 m
7 June 2021	0.228 m
14 June 2021	0.219 m
21 June 2021	0.222 m
28 June 2021	0.266 m
5 July 2021	0.242 m
12 July 2021	0.371 m
19 July 2021	0.211 m
26 July 2021	0.189 m
2 August 2021	0.216 m
9 August 2021	0.184 m
16 August 2021	0.179 m
23 August 2021	0.176 m
30 August 2021	0.173 m
6 September 2021	0.171 m
13 September 2021	0.223 m
20 September 2021	0.204 m
27 September 2021	0.196 m
4 October 2021	0.187 m
11 October 2021	0.190 m
18 October 2021	0.207 m
25 October 2021	0.217 m
1 November 2021	0.270 m
8 November 2021	0.222 m
15 November 2021	0.225 m
22 November 2021	0.269 m
29 November 2021	0.351 m
6 December 2021	0.425 m
13 December 2021	0.263 m
20 December 2021	0.238 m
27 December 2021	0.314 m
3 January 2022	0.339 m
10 January 2022	0.322 m
17 January 2022	0.274 m
24 January 2022	0.261 m
31 January 2022	0.263 m
7 February 2022	0.266 m
14 February 2022	0.290 m
21 February 2022	0.266 m
28 February 2022	0.245 m
7 March 2022	0.244 m
14 March 2022	0.243 m
21 March 2022	0.234 m
28 March 2022	0.241 m
4 April 2022	0.264 m
11 April 2022	0.240 m
18 April 2022	0.227 m
25 April 2022	0.220 m
2 May 2022	0.208 m
9 May 2022	0.193 m
16 May 2022	0.187 m
23 May 2022	0.200 m
30 May 2022	0.194 m
6 June 2022	0.187 m
13 June 2022	0.172 m
20 June 2022	0.248 m
27 June 2022	0.231 m
4 July 2022	0.175 m
11 July 2022	0.165 m
18 July 2022	0.166 m
25 July 2022	0.162 m
1 August 2022	0.156 m
8 August 2022	0.151 m
15 August 2022	0.168 m
22 August 2022	0.154 m
29 August 2022	0.153 m
5 September 2022	0.177 m
12 September 2022	0.169 m
19 September 2022	0.162 m
26 September 2022	0.198 m
3 October 2022	0.177 m
10 October 2022	0.186 m
17 October 2022	0.220 m
24 October 2022	0.196 m
31 October 2022	0.199 m
7 November 2022	0.214 m
14 November 2022	0.208 m
21 November 2022	0.203 m
28 November 2022	0.207 m
5 December 2022	0.210 m
12 December 2022	0.212 m
19 December 2022	0.235 m
26 December 2022	0.226 m
2 January 2023	0.236 m
9 January 2023	0.272 m
16 January 2023	0.318 m
23 January 2023	0.265 m
30 January 2023	0.248 m
6 February 2023	0.238 m
13 February 2023	0.230 m
20 February 2023	0.227 m
27 February 2023	0.219 m
6 March 2023	0.256 m
13 March 2023	0.257 m
20 March 2023	0.258 m
27 March 2023	0.282 m
3 April 2023	0.257 m
10 April 2023	0.273 m
17 April 2023	0.265 m
24 April 2023	0.263 m
1 May 2023	0.238 m
8 May 2023	0.242 m
15 May 2023	0.217 m
22 May 2023	0.196 m
29 May 2023	0.181 m
5 June 2023	0.178 m
12 June 2023	0.173 m
19 June 2023	0.228 m
26 June 2023	0.165 m
3 July 2023	0.163 m
10 July 2023	0.158 m
17 July 2023	0.159 m
24 July 2023	0.171 m
31 July 2023	0.195 m
7 August 2023	0.173 m
14 August 2023	0.196 m
21 August 2023	0.171 m
28 August 2023	0.160 m
4 September 2023	0.148 m
11 September 2023	0.157 m
18 September 2023	0.188 m
25 September 2023	0.158 m
2 October 2023	0.157 m
9 October 2023	0.159 m
16 October 2023	0.180 m
23 October 2023	0.219 m
30 October 2023	0.247 m
6 November 2023	0.230 m
13 November 2023	0.265 m
20 November 2023	0.243 m
27 November 2023	0.261 m
4 December 2023	0.277 m
11 December 2023	0.331 m
18 December 2023	0.305 m
25 December 2023	0.277 m
1 January 2024	0.398 m
8 January 2024	0.294 m
15 January 2024	0.401 m
22 January 2024	0.337 m
29 January 2024	0.306 m
5 February 2024	0.346 m
12 February 2024	0.309 m
19 February 2024	0.561 m
26 February 2024	0.544 m
4 March 2024	0.484 m
11 March 2024	0.417 m
18 March 2024	0.458 m
25 March 2024	0.551 m
1 April 2024	0.635 m
8 April 2024	0.455 m
15 April 2024	0.353 m
22 April 2024	0.320 m
29 April 2024	0.424 m
6 May 2024	0.397 m
13 May 2024	0.342 m
20 May 2024	0.378 m
27 May 2024	0.350 m
3 June 2024	0.261 m
10 June 2024	0.233 m
17 June 2024	0.482 m
24 June 2024	0.313 m
1 July 2024	0.334 m
8 July 2024	0.255 m
15 July 2024	0.251 m
22 July 2024	0.232 m
29 July 2024	0.245 m
5 August 2024	0.210 m
12 August 2024	0.220 m
19 August 2024	0.215 m
26 August 2024	0.198 m
2 September 2024	0.319 m
9 September 2024	0.261 m
16 September 2024	0.218 m
23 September 2024	0.286 m
30 September 2024	0.255 m
7 October 2024	0.391 m
14 October 2024	0.427 m
21 October 2024	0.388 m
28 October 2024	0.368 m
4 November 2024	0.367 m
11 November 2024	0.373 m
18 November 2024	0.549 m
25 November 2024	0.536 m
2 December 2024	0.515 m
9 December 2024	0.556 m
16 December 2024	0.512 m
23 December 2024	0.536 m
30 December 2024	0.603 m
6 January 2025	0.795 m
13 January 2025	0.606 m
20 January 2025	0.595 m
27 January 2025	0.532 m
3 February 2025	0.443 m
10 February 2025	0.512 m
17 February 2025	0.400 m
24 February 2025	0.520 m
3 March 2025	0.392 m
10 March 2025	0.411 m
17 March 2025	0.406 m
24 March 2025	0.339 m
31 March 2025	0.304 m
7 April 2025	0.270 m
14 April 2025	0.247 m
21 April 2025	0.277 m
28 April 2025	0.228 m
5 May 2025	0.223 m
12 May 2025	0.214 m
19 May 2025	0.210 m
26 May 2025	0.201 m
2 June 2025	0.204 m
9 June 2025	0.186 m
16 June 2025	0.185 m
23 June 2025	0.184 m
30 June 2025	0.184 m
7 July 2025	0.184 m
14 July 2025	0.177 m
21 July 2025	0.192 m
28 July 2025	0.173 m
4 August 2025	0.161 m
11 August 2025	0.154 m
18 August 2025	0.183 m
25 August 2025	0.186 m
1 September 2025	0.177 m
8 September 2025	0.172 m
15 September 2025	0.172 m
22 September 2025	0.206 m
29 September 2025	0.180 m
6 October 2025	0.170 m
13 October 2025	0.170 m
20 October 2025	0.231 m
27 October 2025	0.212 m
3 November 2025	0.203 m
10 November 2025	0.203 m
17 November 2025	0.199 m
24 November 2025	0.255 m
1 December 2025	0.260 m
8 December 2025	0.286 m
15 December 2025	0.226 m
22 December 2025	0.241 m
29 December 2025	0.224 m
5 January 2026	0.244 m
12 January 2026	0.245 m
19 January 2026	0.219 m
26 January 2026	0.241 m
2 February 2026	0.261 m
9 February 2026	0.620 m
16 February 2026	0.892 m
23 February 2026	0.638 m
2 March 2026	0.497 m
9 March 2026	0.492 m
16 March 2026	0.363 m
23 March 2026	0.308 m
30 March 2026	0.300 m
6 April 2026	0.266 m
13 April 2026	0.245 m
20 April 2026	0.227 m
27 April 2026	0.228 m
4 May 2026	0.233 m
11 May 2026	0.232 m
18 May 2026	0.213 m
25 May 2026	0.185 m
1 June 2026	0.186 m
8 June 2026	0.185 m
15 June 2026	0.170 m
22 June 2026	0.162 m
29 June 2026	0.162 m
6 July 2026	0.153 m
13 July 2026	0.154 m
20 July 2026	0.131 m
27 July 2026	0.117 m
3 August 2026	0.122 m
10 August 2026	0.123 m
17 August 2026	0.127 m
24 August 2026	0.155 m
31 August 2026	0.136 m
7 September 2026	0.131 m
14 September 2026	0.130 m
21 September 2026	0.135 m
28 September 2026	0.142 m
5 October 2026	0.147 m
12 October 2026	0.145 m
19 October 2026	0.181 m

The whole record since 2011, weekly averages

Level
Our record

Weekly averages of the Tholon at Senan from 13 May 2011 to 25 October 2026.

Table: The whole record since 2011, weekly averages

Week starting	Weekly average of daily highs (m)
9 May 2011	no value
16 May 2011	0.166 m
23 May 2011	0.156 m
30 May 2011	0.177 m
6 June 2011	0.174 m
13 June 2011	0.161 m
20 June 2011	0.171 m
27 June 2011	0.150 m
4 July 2011	0.151 m
11 July 2011	0.150 m
18 July 2011	0.203 m
25 July 2011	0.146 m
1 August 2011	0.152 m
8 August 2011	0.157 m
15 August 2011	0.155 m
22 August 2011	0.155 m
29 August 2011	0.145 m
5 September 2011	0.144 m
12 September 2011	0.152 m
19 September 2011	0.150 m
26 September 2011	0.143 m
3 October 2011	0.150 m
10 October 2011	0.170 m
17 October 2011	0.178 m
24 October 2011	0.178 m
31 October 2011	0.185 m
7 November 2011	0.176 m
14 November 2011	0.180 m
21 November 2011	0.180 m
28 November 2011	0.207 m
5 December 2011	0.233 m
12 December 2011	0.376 m
19 December 2011	0.311 m
26 December 2011	0.336 m
2 January 2012	0.536 m
9 January 2012	0.386 m
16 January 2012	0.386 m
23 January 2012	0.392 m
30 January 2012	0.353 m
6 February 2012	0.352 m
13 February 2012	0.353 m
20 February 2012	0.334 m
27 February 2012	0.294 m
5 March 2012	0.322 m
12 March 2012	0.292 m
19 March 2012	0.322 m
26 March 2012	0.267 m
2 April 2012	0.256 m
9 April 2012	0.263 m
16 April 2012	0.284 m
23 April 2012	0.596 m
30 April 2012	0.460 m
7 May 2012	0.356 m
14 May 2012	0.313 m
21 May 2012	0.509 m
28 May 2012	0.287 m
4 June 2012	0.267 m
11 June 2012	0.244 m
18 June 2012	0.283 m
25 June 2012	0.229 m
2 July 2012	0.248 m
9 July 2012	0.239 m
16 July 2012	0.197 m
23 July 2012	0.224 m
30 July 2012	0.196 m
6 August 2012	0.170 m
13 August 2012	0.163 m
20 August 2012	0.159 m
27 August 2012	0.154 m
3 September 2012	0.152 m
10 September 2012	0.161 m
17 September 2012	0.163 m
24 September 2012	0.195 m
1 October 2012	0.174 m
8 October 2012	0.286 m
15 October 2012	0.273 m
22 October 2012	0.215 m
29 October 2012	0.307 m
5 November 2012	0.308 m
12 November 2012	0.306 m
19 November 2012	0.334 m
26 November 2012	0.343 m
3 December 2012	0.437 m
10 December 2012	0.412 m
17 December 2012	0.497 m
24 December 2012	0.540 m
31 December 2012	0.476 m
7 January 2013	0.481 m
14 January 2013	0.498 m
21 January 2013	0.562 m
28 January 2013	0.816 m
4 February 2013	0.754 m
11 February 2013	0.719 m
18 February 2013	0.577 m
25 February 2013	0.491 m
4 March 2013	0.459 m
11 March 2013	0.532 m
18 March 2013	0.544 m
25 March 2013	0.409 m
1 April 2013	0.367 m
8 April 2013	0.657 m
15 April 2013	0.418 m
22 April 2013	0.416 m
29 April 2013	0.723 m
6 May 2013	0.414 m
13 May 2013	0.386 m
20 May 2013	0.519 m
27 May 2013	0.371 m
3 June 2013	0.341 m
10 June 2013	0.342 m
17 June 2013	0.519 m
24 June 2013	0.298 m
1 July 2013	0.274 m
8 July 2013	0.243 m
15 July 2013	0.230 m
22 July 2013	0.272 m
29 July 2013	0.239 m
5 August 2013	0.246 m
12 August 2013	0.198 m
19 August 2013	0.213 m
26 August 2013	0.235 m
2 September 2013	0.193 m
9 September 2013	0.221 m
16 September 2013	0.218 m
23 September 2013	0.219 m
30 September 2013	0.294 m
7 October 2013	0.246 m
14 October 2013	0.301 m
21 October 2013	0.411 m
28 October 2013	0.431 m
4 November 2013	0.693 m
11 November 2013	0.659 m
18 November 2013	0.597 m
25 November 2013	0.494 m
2 December 2013	0.444 m
9 December 2013	0.400 m
16 December 2013	0.383 m
23 December 2013	0.533 m
30 December 2013	0.467 m
6 January 2014	0.413 m
13 January 2014	0.396 m
20 January 2014	0.489 m
27 January 2014	0.503 m
3 February 2014	0.453 m
10 February 2014	0.672 m
17 February 2014	0.577 m
24 February 2014	0.631 m
3 March 2014	0.512 m
10 March 2014	0.426 m
17 March 2014	0.402 m
24 March 2014	0.356 m
31 March 2014	0.320 m
7 April 2014	0.286 m
14 April 2014	0.269 m
21 April 2014	0.284 m
28 April 2014	0.300 m
5 May 2014	0.252 m
12 May 2014	0.261 m
19 May 2014	0.254 m
26 May 2014	0.227 m
2 June 2014	0.217 m
9 June 2014	0.195 m
16 June 2014	0.194 m
23 June 2014	0.202 m
30 June 2014	0.199 m
7 July 2014	0.220 m
14 July 2014	0.202 m
21 July 2014	0.202 m
28 July 2014	0.191 m
4 August 2014	0.184 m
11 August 2014	0.335 m
18 August 2014	0.194 m
25 August 2014	0.205 m
1 September 2014	0.177 m
8 September 2014	0.179 m
15 September 2014	0.226 m
22 September 2014	0.185 m
29 September 2014	0.196 m
6 October 2014	0.431 m
13 October 2014	0.306 m
20 October 2014	0.291 m
27 October 2014	0.257 m
3 November 2014	0.323 m
10 November 2014	0.319 m
17 November 2014	0.310 m
24 November 2014	0.340 m
1 December 2014	0.296 m
8 December 2014	0.340 m
15 December 2014	0.447 m
22 December 2014	0.382 m
29 December 2014	0.358 m
5 January 2015	0.387 m
12 January 2015	0.530 m
19 January 2015	0.422 m
26 January 2015	0.531 m
2 February 2015	0.448 m
9 February 2015	0.417 m
16 February 2015	0.415 m
23 February 2015	0.481 m
2 March 2015	0.425 m
9 March 2015	0.390 m
16 March 2015	0.363 m
23 March 2015	0.382 m
30 March 2015	0.499 m
6 April 2015	0.346 m
13 April 2015	0.331 m
20 April 2015	0.336 m
27 April 2015	0.743 m
4 May 2015	0.521 m
11 May 2015	0.361 m
18 May 2015	0.312 m
25 May 2015	0.279 m
1 June 2015	0.258 m
8 June 2015	0.241 m
15 June 2015	0.232 m
22 June 2015	0.216 m
29 June 2015	0.193 m
6 July 2015	0.186 m
13 July 2015	0.194 m
20 July 2015	0.180 m
27 July 2015	0.193 m
3 August 2015	0.182 m
10 August 2015	0.205 m
17 August 2015	0.188 m
24 August 2015	0.204 m
31 August 2015	0.309 m
7 September 2015	0.213 m
14 September 2015	0.267 m
21 September 2015	0.227 m
28 September 2015	0.220 m
5 October 2015	0.329 m
12 October 2015	0.279 m
19 October 2015	0.293 m
26 October 2015	0.345 m
2 November 2015	0.337 m
9 November 2015	0.337 m
16 November 2015	0.472 m
23 November 2015	0.361 m
30 November 2015	0.304 m
7 December 2015	0.285 m
14 December 2015	0.325 m
21 December 2015	0.282 m
28 December 2015	0.278 m
4 January 2016	0.342 m
11 January 2016	0.343 m
18 January 2016	0.280 m
25 January 2016	0.354 m
1 February 2016	0.412 m
8 February 2016	0.524 m
15 February 2016	0.450 m
22 February 2016	0.458 m
29 February 2016	0.551 m
7 March 2016	0.475 m
14 March 2016	0.391 m
21 March 2016	0.349 m
28 March 2016	0.383 m
4 April 2016	0.413 m
11 April 2016	0.334 m
18 April 2016	0.325 m
25 April 2016	0.349 m
2 May 2016	0.301 m
9 May 2016	0.417 m
16 May 2016	0.344 m
23 May 2016	0.440 m
30 May 2016	1.072 m
6 June 2016	0.603 m
13 June 2016	0.617 m
20 June 2016	0.510 m
27 June 2016	0.388 m
4 July 2016	0.341 m
11 July 2016	0.334 m
18 July 2016	0.271 m
25 July 2016	0.271 m
1 August 2016	0.238 m
8 August 2016	0.222 m
15 August 2016	0.209 m
22 August 2016	0.211 m
29 August 2016	0.204 m
5 September 2016	0.207 m
12 September 2016	0.230 m
19 September 2016	0.215 m
26 September 2016	0.238 m
3 October 2016	0.215 m
10 October 2016	0.232 m
17 October 2016	0.219 m
24 October 2016	0.265 m
31 October 2016	0.261 m
7 November 2016	0.318 m
14 November 2016	0.348 m
21 November 2016	0.343 m
28 November 2016	0.294 m
5 December 2016	0.282 m
12 December 2016	0.281 m
19 December 2016	0.279 m
26 December 2016	0.251 m
2 January 2017	0.246 m
9 January 2017	0.285 m
16 January 2017	0.276 m
23 January 2017	0.244 m
30 January 2017	0.269 m
6 February 2017	0.281 m
13 February 2017	0.268 m
20 February 2017	0.256 m
27 February 2017	0.362 m
6 March 2017	0.458 m
13 March 2017	0.324 m
20 March 2017	0.392 m
27 March 2017	0.340 m
3 April 2017	0.294 m
10 April 2017	0.268 m
17 April 2017	0.261 m
24 April 2017	0.257 m
1 May 2017	0.276 m
8 May 2017	0.259 m
15 May 2017	0.269 m
22 May 2017	0.232 m
29 May 2017	0.278 m
5 June 2017	0.217 m
12 June 2017	0.178 m
19 June 2017	0.172 m
26 June 2017	0.209 m
3 July 2017	0.195 m
10 July 2017	0.196 m
17 July 2017	0.194 m
24 July 2017	0.188 m
31 July 2017	0.217 m
7 August 2017	0.182 m
14 August 2017	0.186 m
21 August 2017	0.179 m
28 August 2017	0.171 m
4 September 2017	0.169 m
11 September 2017	0.190 m
18 September 2017	0.184 m
25 September 2017	0.190 m
2 October 2017	0.202 m
9 October 2017	0.180 m
16 October 2017	0.188 m
23 October 2017	0.180 m
30 October 2017	0.215 m
6 November 2017	0.262 m
13 November 2017	0.228 m
20 November 2017	0.214 m
27 November 2017	0.232 m
4 December 2017	0.233 m
11 December 2017	0.294 m
18 December 2017	0.299 m
25 December 2017	0.317 m
1 January 2018	0.499 m
8 January 2018	0.370 m
15 January 2018	0.647 m
22 January 2018	1.040 m
29 January 2018	0.785 m
5 February 2018	0.703 m
12 February 2018	0.750 m
19 February 2018	0.616 m
26 February 2018	0.599 m
5 March 2018	0.540 m
12 March 2018	0.613 m
19 March 2018	0.451 m
26 March 2018	0.452 m
2 April 2018	0.428 m
9 April 2018	0.399 m
16 April 2018	0.347 m
23 April 2018	0.318 m
30 April 2018	0.306 m
7 May 2018	0.256 m
14 May 2018	0.391 m
21 May 2018	0.340 m
28 May 2018	0.279 m
4 June 2018	0.458 m
11 June 2018	0.284 m
18 June 2018	0.235 m
25 June 2018	0.210 m
2 July 2018	0.253 m
9 July 2018	0.214 m
16 July 2018	0.208 m
23 July 2018	0.202 m
30 July 2018	0.183 m
6 August 2018	0.185 m
13 August 2018	0.184 m
20 August 2018	0.179 m
27 August 2018	0.178 m
3 September 2018	0.177 m
10 September 2018	0.176 m
17 September 2018	0.182 m
24 September 2018	0.182 m
1 October 2018	0.181 m
8 October 2018	0.176 m
15 October 2018	0.178 m
22 October 2018	0.210 m
29 October 2018	0.278 m
5 November 2018	0.305 m
12 November 2018	0.347 m
19 November 2018	0.339 m
26 November 2018	0.355 m
3 December 2018	0.351 m
10 December 2018	0.306 m
17 December 2018	0.339 m
24 December 2018	0.293 m
31 December 2018	0.257 m
7 January 2019	0.256 m
14 January 2019	0.276 m
21 January 2019	0.315 m
28 January 2019	0.433 m
4 February 2019	0.412 m
11 February 2019	0.392 m
18 February 2019	0.335 m
25 February 2019	0.325 m
4 March 2019	0.381 m
11 March 2019	0.466 m
18 March 2019	0.362 m
25 March 2019	0.315 m
1 April 2019	0.343 m
8 April 2019	0.302 m
15 April 2019	0.264 m
22 April 2019	0.292 m
29 April 2019	0.293 m
6 May 2019	0.436 m
13 May 2019	0.300 m
20 May 2019	0.318 m
27 May 2019	0.228 m
3 June 2019	0.252 m
10 June 2019	0.216 m
17 June 2019	0.199 m
24 June 2019	0.184 m
1 July 2019	0.196 m
8 July 2019	0.176 m
15 July 2019	0.169 m
22 July 2019	0.173 m
29 July 2019	0.174 m
5 August 2019	0.174 m
12 August 2019	0.177 m
19 August 2019	0.178 m
26 August 2019	0.171 m
2 September 2019	0.176 m
9 September 2019	0.179 m
16 September 2019	0.175 m
23 September 2019	0.192 m
30 September 2019	0.227 m
7 October 2019	0.225 m
14 October 2019	0.381 m
21 October 2019	0.305 m
28 October 2019	0.344 m
4 November 2019	0.383 m
11 November 2019	0.419 m
18 November 2019	0.488 m
25 November 2019	0.483 m
2 December 2019	0.461 m
9 December 2019	0.661 m
16 December 2019	0.712 m
23 December 2019	0.607 m
30 December 2019	0.421 m
6 January 2020	0.394 m
13 January 2020	0.361 m
20 January 2020	0.331 m
27 January 2020	0.407 m
3 February 2020	0.493 m
10 February 2020	0.620 m
17 February 2020	0.535 m
24 February 2020	0.530 m
2 March 2020	0.675 m
9 March 2020	0.563 m
16 March 2020	0.501 m
23 March 2020	0.444 m
30 March 2020	0.396 m
6 April 2020	0.362 m
13 April 2020	0.312 m
20 April 2020	0.275 m
27 April 2020	0.252 m
4 May 2020	0.306 m
11 May 2020	0.394 m
18 May 2020	0.232 m
25 May 2020	0.216 m
1 June 2020	0.222 m
8 June 2020	0.253 m
15 June 2020	0.217 m
22 June 2020	0.201 m
29 June 2020	0.196 m
6 July 2020	0.190 m
13 July 2020	0.199 m
20 July 2020	0.185 m
27 July 2020	0.174 m
3 August 2020	0.180 m
10 August 2020	0.184 m
17 August 2020	0.175 m
24 August 2020	0.169 m
31 August 2020	0.177 m
7 September 2020	0.170 m
14 September 2020	0.171 m
21 September 2020	0.182 m
28 September 2020	0.236 m
5 October 2020	0.221 m
12 October 2020	0.199 m
19 October 2020	0.229 m
26 October 2020	0.231 m
2 November 2020	0.221 m
9 November 2020	0.238 m
16 November 2020	0.244 m
23 November 2020	0.227 m
30 November 2020	0.253 m
7 December 2020	0.275 m
14 December 2020	0.241 m
21 December 2020	0.288 m
28 December 2020	0.331 m
4 January 2021	0.241 m
11 January 2021	0.393 m
18 January 2021	0.446 m
25 January 2021	0.523 m
1 February 2021	0.646 m
8 February 2021	0.579 m
15 February 2021	0.512 m
22 February 2021	0.423 m
1 March 2021	0.370 m
8 March 2021	0.404 m
15 March 2021	0.404 m
22 March 2021	0.311 m
29 March 2021	0.285 m
5 April 2021	0.315 m
12 April 2021	0.324 m
19 April 2021	0.263 m
26 April 2021	0.274 m
3 May 2021	0.361 m
10 May 2021	0.262 m
17 May 2021	0.345 m
24 May 2021	0.270 m
31 May 2021	0.301 m
7 June 2021	0.228 m
14 June 2021	0.219 m
21 June 2021	0.222 m
28 June 2021	0.266 m
5 July 2021	0.242 m
12 July 2021	0.371 m
19 July 2021	0.211 m
26 July 2021	0.189 m
2 August 2021	0.216 m
9 August 2021	0.184 m
16 August 2021	0.179 m
23 August 2021	0.176 m
30 August 2021	0.173 m
6 September 2021	0.171 m
13 September 2021	0.223 m
20 September 2021	0.204 m
27 September 2021	0.196 m
4 October 2021	0.187 m
11 October 2021	0.190 m
18 October 2021	0.207 m
25 October 2021	0.217 m
1 November 2021	0.270 m
8 November 2021	0.222 m
15 November 2021	0.225 m
22 November 2021	0.269 m
29 November 2021	0.351 m
6 December 2021	0.425 m
13 December 2021	0.263 m
20 December 2021	0.238 m
27 December 2021	0.314 m
3 January 2022	0.339 m
10 January 2022	0.322 m
17 January 2022	0.274 m
24 January 2022	0.261 m
31 January 2022	0.263 m
7 February 2022	0.266 m
14 February 2022	0.290 m
21 February 2022	0.266 m
28 February 2022	0.245 m
7 March 2022	0.244 m
14 March 2022	0.243 m
21 March 2022	0.234 m
28 March 2022	0.241 m
4 April 2022	0.264 m
11 April 2022	0.240 m
18 April 2022	0.227 m
25 April 2022	0.220 m
2 May 2022	0.208 m
9 May 2022	0.193 m
16 May 2022	0.187 m
23 May 2022	0.200 m
30 May 2022	0.194 m
6 June 2022	0.187 m
13 June 2022	0.172 m
20 June 2022	0.248 m
27 June 2022	0.231 m
4 July 2022	0.175 m
11 July 2022	0.165 m
18 July 2022	0.166 m
25 July 2022	0.162 m
1 August 2022	0.156 m
8 August 2022	0.151 m
15 August 2022	0.168 m
22 August 2022	0.154 m
29 August 2022	0.153 m
5 September 2022	0.177 m
12 September 2022	0.169 m
19 September 2022	0.162 m
26 September 2022	0.198 m
3 October 2022	0.177 m
10 October 2022	0.186 m
17 October 2022	0.220 m
24 October 2022	0.196 m
31 October 2022	0.199 m
7 November 2022	0.214 m
14 November 2022	0.208 m
21 November 2022	0.203 m
28 November 2022	0.207 m
5 December 2022	0.210 m
12 December 2022	0.212 m
19 December 2022	0.235 m
26 December 2022	0.226 m
2 January 2023	0.236 m
9 January 2023	0.272 m
16 January 2023	0.318 m
23 January 2023	0.265 m
30 January 2023	0.248 m
6 February 2023	0.238 m
13 February 2023	0.230 m
20 February 2023	0.227 m
27 February 2023	0.219 m
6 March 2023	0.256 m
13 March 2023	0.257 m
20 March 2023	0.258 m
27 March 2023	0.282 m
3 April 2023	0.257 m
10 April 2023	0.273 m
17 April 2023	0.265 m
24 April 2023	0.263 m
1 May 2023	0.238 m
8 May 2023	0.242 m
15 May 2023	0.217 m
22 May 2023	0.196 m
29 May 2023	0.181 m
5 June 2023	0.178 m
12 June 2023	0.173 m
19 June 2023	0.228 m
26 June 2023	0.165 m
3 July 2023	0.163 m
10 July 2023	0.158 m
17 July 2023	0.159 m
24 July 2023	0.171 m
31 July 2023	0.195 m
7 August 2023	0.173 m
14 August 2023	0.196 m
21 August 2023	0.171 m
28 August 2023	0.160 m
4 September 2023	0.148 m
11 September 2023	0.157 m
18 September 2023	0.188 m
25 September 2023	0.158 m
2 October 2023	0.157 m
9 October 2023	0.159 m
16 October 2023	0.180 m
23 October 2023	0.219 m
30 October 2023	0.247 m
6 November 2023	0.230 m
13 November 2023	0.265 m
20 November 2023	0.243 m
27 November 2023	0.261 m
4 December 2023	0.277 m
11 December 2023	0.331 m
18 December 2023	0.305 m
25 December 2023	0.277 m
1 January 2024	0.398 m
8 January 2024	0.294 m
15 January 2024	0.401 m
22 January 2024	0.337 m
29 January 2024	0.306 m
5 February 2024	0.346 m
12 February 2024	0.309 m
19 February 2024	0.561 m
26 February 2024	0.544 m
4 March 2024	0.484 m
11 March 2024	0.417 m
18 March 2024	0.458 m
25 March 2024	0.551 m
1 April 2024	0.635 m
8 April 2024	0.455 m
15 April 2024	0.353 m
22 April 2024	0.320 m
29 April 2024	0.424 m
6 May 2024	0.397 m
13 May 2024	0.342 m
20 May 2024	0.378 m
27 May 2024	0.350 m
3 June 2024	0.261 m
10 June 2024	0.233 m
17 June 2024	0.482 m
24 June 2024	0.313 m
1 July 2024	0.334 m
8 July 2024	0.255 m
15 July 2024	0.251 m
22 July 2024	0.232 m
29 July 2024	0.245 m
5 August 2024	0.210 m
12 August 2024	0.220 m
19 August 2024	0.215 m
26 August 2024	0.198 m
2 September 2024	0.319 m
9 September 2024	0.261 m
16 September 2024	0.218 m
23 September 2024	0.286 m
30 September 2024	0.255 m
7 October 2024	0.391 m
14 October 2024	0.427 m
21 October 2024	0.388 m
28 October 2024	0.368 m
4 November 2024	0.367 m
11 November 2024	0.373 m
18 November 2024	0.549 m
25 November 2024	0.536 m
2 December 2024	0.515 m
9 December 2024	0.556 m
16 December 2024	0.512 m
23 December 2024	0.536 m
30 December 2024	0.603 m
6 January 2025	0.795 m
13 January 2025	0.606 m
20 January 2025	0.595 m
27 January 2025	0.532 m
3 February 2025	0.443 m
10 February 2025	0.512 m
17 February 2025	0.400 m
24 February 2025	0.520 m
3 March 2025	0.392 m
10 March 2025	0.411 m
17 March 2025	0.406 m
24 March 2025	0.339 m
31 March 2025	0.304 m
7 April 2025	0.270 m
14 April 2025	0.247 m
21 April 2025	0.277 m
28 April 2025	0.228 m
5 May 2025	0.223 m
12 May 2025	0.214 m
19 May 2025	0.210 m
26 May 2025	0.201 m
2 June 2025	0.204 m
9 June 2025	0.186 m
16 June 2025	0.185 m
23 June 2025	0.184 m
30 June 2025	0.184 m
7 July 2025	0.184 m
14 July 2025	0.177 m
21 July 2025	0.192 m
28 July 2025	0.173 m
4 August 2025	0.161 m
11 August 2025	0.154 m
18 August 2025	0.183 m
25 August 2025	0.186 m
1 September 2025	0.177 m
8 September 2025	0.172 m
15 September 2025	0.172 m
22 September 2025	0.206 m
29 September 2025	0.180 m
6 October 2025	0.170 m
13 October 2025	0.170 m
20 October 2025	0.231 m
27 October 2025	0.212 m
3 November 2025	0.203 m
10 November 2025	0.203 m
17 November 2025	0.199 m
24 November 2025	0.255 m
1 December 2025	0.260 m
8 December 2025	0.286 m
15 December 2025	0.226 m
22 December 2025	0.241 m
29 December 2025	0.224 m
5 January 2026	0.244 m
12 January 2026	0.245 m
19 January 2026	0.219 m
26 January 2026	0.241 m
2 February 2026	0.261 m
9 February 2026	0.620 m
16 February 2026	0.892 m
23 February 2026	0.638 m
2 March 2026	0.497 m
9 March 2026	0.492 m
16 March 2026	0.363 m
23 March 2026	0.308 m
30 March 2026	0.300 m
6 April 2026	0.266 m
13 April 2026	0.245 m
20 April 2026	0.227 m
27 April 2026	0.228 m
4 May 2026	0.233 m
11 May 2026	0.232 m
18 May 2026	0.213 m
25 May 2026	0.185 m
1 June 2026	0.186 m
8 June 2026	0.185 m
15 June 2026	0.170 m
22 June 2026	0.162 m
29 June 2026	0.162 m
6 July 2026	0.153 m
13 July 2026	0.154 m
20 July 2026	0.131 m
27 July 2026	0.117 m
3 August 2026	0.122 m
10 August 2026	0.123 m
17 August 2026	0.127 m
24 August 2026	0.155 m
31 August 2026	0.136 m
7 September 2026	0.131 m
14 September 2026	0.130 m
21 September 2026	0.135 m
28 September 2026	0.142 m
5 October 2026	0.147 m
12 October 2026	0.145 m
19 October 2026	0.181 m

How this compares

The daily high on 25 October 2026 was 0.255 m, the seventh highest for 25 October in 16 years of record (2011 to 2026). The newest value is provisional.
That is 0.04 m above the median of 0.22 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

Day	Level	Against the normal range for the date
25 October 2025	0.199 m
25 October 2024	0.364 m
25 October 2023	0.249 m
25 October 2022	0.202 m
25 October 2021	0.198 m
25 October 2020	0.228 m
25 October 2019	0.229 m
25 October 2018	0.209 m
25 October 2017	0.174 m
25 October 2016	0.342 m

Year by year

Lowest and highestAcross the year

The lowest and highest daily high of each year

Each year, lowest to highest
The year so far
Lowest in our series
Highest in our series

The lowest and highest daily high of the Tholon at Senan in each year from 2012 to 2025 with a value on at least 300 days, and in 2026 so far. The lowest daily high in our series since 13 May 2011 was 0.113 m, on 27 July 2026 and 1 other day, a provisional value. The highest was 1.634 m, on 31 May 2016.

Table: The lowest and highest daily high of each year

Year	Lowest daily high (m)	Day	Highest daily high (m)	Day	Days with a value
2012	0.151 m	10 September	0.801 m	26 April	366
2013	0.185 m	6 September	1.389 m	2 May	365
2014	0.165 m	19 July	1.024 m	14 February	365
2015	0.172 m	8 August	1.318 m	2 May	365
2016	0.198 m	27 August	1.634 m	31 May	366
2017	0.164 m	24 June	0.639 m	7 March	365
2018	0.17 m	11 October	1.413 m	26 January	365
2019	0.163 m	25 July	0.827 m	13 December	365
2020	0.164 m	20 September	0.932 m	6 March	366
2021	0.166 m	9 September	0.804 m	7 February	365
2022	0.148 m	12 August	0.503 m	9 January	365
2023	0.145 m	10 September	0.408 m	12 December	365
2024provisional	0.193 m	2 September	1.053 m	23 February	366
2025provisional	0.153 m	15 August	0.95 m	10 January	365
2026so far, provisional	0.113 m	27 July	1.20 m	20 February	298

Each year from January to December, weekly averages of daily highs

The year so far, also the year of the lowest day in our series
2025, the year before
Year of the highest day in our series
Other years
Normal range for the week

The weekly averages of daily highs of the Tholon at Senan in each year from 2011 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. The lowest daily high in our series since 13 May 2011 was in 2026, the highest in 2016. 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 of daily highs

Week	2026 so far, lowest day Weekly average of daily highs (m)	2016, highest day Weekly average of daily highs (m)	Normal range (m)
1 Jan to 7 Jan	0.221 m	0.328 m	0.245 m to 0.562 m
8 Jan to 14 Jan	0.250 m	0.356 m	0.252 m to 0.607 m
15 Jan to 21 Jan	0.240 m	0.285 m	0.268 m to 0.607 m
22 Jan to 28 Jan	0.230 m	0.278 m	0.261 m to 0.628 m
29 Jan to 4 Feb	0.257 m	0.446 m	0.256 m to 0.734 m
5 Feb to 11 Feb	0.300 m	0.451 m	0.253 m to 0.731 m
12 Feb to 18 Feb	0.785 m	0.510 m	0.256 m to 0.687 m
19 Feb to 25 Feb	0.857 m	0.442 m	0.255 m to 0.646 m
26 Feb to 4 Mar	0.575 m	0.451 m	0.244 m to 0.620 m
5 Mar to 11 Mar	0.456 m	0.577 m	0.249 m to 0.590 m
12 Mar to 18 Mar	0.476 m	0.420 m	0.254 m to 0.560 m
19 Mar to 25 Mar	0.327 m	0.358 m	0.253 m to 0.503 m
26 Mar to 1 Apr	0.303 m	0.362 m	0.257 m to 0.471 m
2 Apr to 8 Apr	0.287 m	0.447 m	0.253 m to 0.494 m
9 Apr to 15 Apr	0.263 m	0.312 m	0.249 m to 0.430 m
16 Apr to 22 Apr	0.230 m	0.341 m	0.245 m to 0.388 m
23 Apr to 29 Apr	0.227 m	0.321 m	0.233 m to 0.438 m
30 Apr to 6 May	0.237 m	0.352 m	0.221 m to 0.541 m
7 May to 13 May	0.228 m	0.282 m	0.213 m to 0.473 m
14 May to 20 May	0.229 m	0.463 m	0.193 m to 0.453 m
21 May to 27 May	0.195 m	0.329 m	0.185 m to 0.411 m
28 May to 3 Jun	0.185 m	0.985 m	0.182 m to 0.411 m
4 Jun to 10 Jun	0.187 m	0.683 m	0.178 m to 0.439 m
11 Jun to 17 Jun	0.178 m	0.652 m	0.170 m to 0.439 m
18 Jun to 24 Jun	0.166 m	0.501 m	0.166 m to 0.419 m
25 Jun to 1 Jul	0.163 m	0.463 m	0.166 m to 0.362 m
2 Jul to 8 Jul	0.157 m	0.365 m	0.164 m to 0.314 m
9 Jul to 15 Jul	0.149 m	0.324 m	0.161 m to 0.290 m
16 Jul to 22 Jul	0.154 m	0.300 m	0.161 m to 0.263 m
23 Jul to 29 Jul	0.117 m	0.254 m	0.161 m to 0.250 m
30 Jul to 5 Aug	0.121 m	0.265 m	0.160 m to 0.244 m
6 Aug to 12 Aug	0.123 m	0.230 m	0.155 m to 0.231 m
13 Aug to 19 Aug	0.123 m	0.213 m	0.155 m to 0.215 m
20 Aug to 26 Aug	0.130 m	0.213 m	0.154 m to 0.214 m
27 Aug to 2 Sep	0.159 m	0.204 m	0.153 m to 0.214 m
3 Sep to 9 Sep	0.132 m	0.209 m	0.152 m to 0.215 m
10 Sep to 16 Sep	0.130 m	0.217 m	0.153 m to 0.244 m
17 Sep to 23 Sep	0.133 m	0.222 m	0.158 m to 0.247 m
24 Sep to 30 Sep	0.141 m	0.211 m	0.158 m to 0.257 m
1 Oct to 7 Oct	0.138 m	0.244 m	0.158 m to 0.297 m
8 Oct to 14 Oct	0.149 m	0.211 m	0.162 m to 0.360 m
15 Oct to 21 Oct	0.155 m	0.236 m	0.168 m to 0.357 m
22 Oct to 28 Oct	no value	0.263 m	0.176 m to 0.368 m
29 Oct to 4 Nov	no value	0.238 m	0.183 m to 0.401 m
5 Nov to 11 Nov	no value	0.298 m	0.186 m to 0.440 m
12 Nov to 18 Nov	no value	0.311 m	0.191 m to 0.540 m
19 Nov to 25 Nov	no value	0.386 m	0.194 m to 0.544 m
26 Nov to 2 Dec	no value	0.301 m	0.200 m to 0.493 m
3 Dec to 9 Dec	no value	0.287 m	0.208 m to 0.491 m
10 Dec to 16 Dec	no value	0.287 m	0.220 m to 0.541 m
17 Dec to 23 Dec	no value	0.273 m	0.227 m to 0.570 m
24 Dec to 31 Dec	no value	0.261 m	0.235 m to 0.537 m

Every year

Year	Days with a value	Days below the normal range
2026to 25 October 2026	298	168
2025	365	39
2024	366	0
2023	365	114
2022	365	133
2021	365	6
2020	366	0
2019	365	3
2018	365	0
2017	365	39
2016	366	0
2015	365	0
2014	365	0
2013	365	0
2012	366	7
2011	233	168

How it compares

That is within the normal range for the date.

Records

Highest daily high in our series since 13 May 2011: 1.634 m on 31 May 2016.
Lowest daily high in our series since 13 May 2011: 0.113 m on 27 July 2026. Provisional data.

About this gauge

Senan is a gauge on the Tholon in Yonne, France.

It lies at 47.9248° N, 3.3631° E.

Its readings come from France's national network of river gauges (Vigicrues and its partners), through Hub'Eau.

Hub'Eau's daily highs for this gauge go back to 13 May 2011.

Hub'Eau's newest readings are mostly raw data that the gauge's operator checks and validates later.

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

About these figures

The normal range for 25 October is 0.18 m to 0.37 m: the 10th to 90th percentile of the daily highs from 18 October to 1 November in 15 years between 2011 and 2025.

Keep exploring

Sources

Source : Hub'Eau / SCV, données PHyC (Licence Ouverte Etalab) (source). Licence: Licence Ouverte / Open Licence version 2.0