Data such as daily rainfall, regional reservoir stocks, river levels and demand is monitored and you can see our current position against historical and seasonal trends and fluctuations.
The majority of the figures are produced either as a % of total capacity (in the case of reservoir stocks) or as Ml/d which is megalitres per day. 1 megalitre is equivalent to 1 million litres.
Here's a summary of the Watsit report data:
April 2026
| Rainfall | Reservoir | Rivers | Demand | |
|---|---|---|---|---|
| Status | 42.2% | 92.5% | Some of our rivers are below critical level | 1324.7Ml/day |
| Notes | % Rainfall (provisional) this month across the Yorkshire region compared to long term average | Current regional reservoir stocks | Key river levels across our region | Regional demand in megalitres a day |
Rainfall average
| Month | 2025 | 2026 | ||
|---|---|---|---|---|
| Provisional rainfall | Actual rainfall | Provisional rainfall | Actual rainfall | |
| January | 121% | 103% | 104% | 124% |
| February | 52% | 53% | 162.8% | 143% |
| March | 40% | 43% | 91.8% | 95% |
| April | 16% | 19% | 42.2% | |
| May | 17% | 65% | ||
| June | 84% | 56% | ||
| July | 102% | 101% | ||
| August | 30% | 28% | ||
| September | 163% | 177% | ||
| October | 95% | 98% | ||
| November | 144% | 176% | ||
| December | 108% | 108% | ||
Reservoir levels
| Month | 2023 | 2024 | 2025 | 2026 |
|---|---|---|---|---|
| January | 93% | 98% | 98% | 97% |
| February | 91% | 98% | 97% | 99% |
| March | 97% | 98% | 88% | 98% |
| April | 97% | 92% | 76% | 93% |
| May | 88% | 94% | 63% | |
| June | 76% | 88% | 56% | |
| July | 78% | 68% | 47% | |
| August | 83% | 68% | 36% | |
| September | 80% | 83% | 46% | |
| October | 97% | 83% | 57% | |
| November | 96% | 83% | 85% | |
| December | 97% | 92% | 94% |
Monthly demand (MI/day)
| Month | 2023 | 2024 | 2025 | 2026 |
|---|---|---|---|---|
| January | 1351.6 | 1396.8 | 1429.6 | 1402 |
| February | 1320.1 | 1319.5 | 1364.6 | 1347 |
| March | 1302.7 | 1323.7 | 1347.5 | 1318 |
| April | 1298.9 | 1294.4 | 1325 | 1324.7 |
| May | 1326.4 | 1310.3 | 1376.4 | |
| June | 1356 | 1294.8 | 1380.4 | |
| July | 1285.5 | 1338.8 | 1290.1 | |
| August | 1268.9 | 1311.3 | 1288.5 | |
| September | 1265.3 | 1289.6 | 1284 | |
| October | 1263.2 | 1304.8 | 1285 | |
| November | 1290.1 | 1290.7 | 1304 | |
| December | 1323.0 | 1299.4 | 1276 |