Timestamp: 05-18-2026 07:01:05
DIVISION OF OPERATIONS AND MAINTENANCE
SUMMARY OF SWP RESERVOIR
05-11-2026 to 05-17-2026
All Values in (AF)
| Oroville Complex | This Week Maximum Day | This Week Minimum Day | 05-17-2026 Reading | Total for Week |
|---|---|---|---|---|
| Inflow To Lake Oroville | 8,566 | 4,264 | 5,363 | 44,902 |
| Total Releases from Hyatt Power Plant (Includes Pumpack) | 7,698 | 3,411 | 5,876 | 37,764 |
| River Valve Flow | 0 | 0 | 0 | 0 |
| Spill | 0 | 0 | 0 | 0 |
| Storage | 3,383,807 | 3,378,428 | 3,378,582 | - |
| Flood Control - Amount of Encroachment | 0 | 0 | 0 | - |
| Releases to Feather River (Sum of River Outlet and Diversion Dam Releases) | 2,083 | 2,083 | 2,083 | 14,581 |
| Releases to Feather River for Flood Control | - | - | - | - |
| Reservoir Storage | Operational Capacity | This Year Maximum Storage (1) | This Year Minimum Storage (1) | Average Storage (2) | 05-17-2026 Reading | Net Change this Week (3) |
|---|---|---|---|---|---|---|
| Frenchman Lake | 55,475 | 57,038 | 46,498 | 42,421 | 55,239 | -585 |
| Lake Davis | 84,371 | 83,169 | 72,982 | 66,506 | 82,413 | -597 |
| Antelope Lake | 22,564 | 23,609 | 19,328 | 22,307 | 22,490 | -204 |
| Lake Oroville | 3,440,276 | 3,383,807 | 2,404,046 | 2,865,510 | 3,378,582 | 5,072 |
| Lake Del Valle | 39,914 | 40,418 | 28,778 | 39,717 | 39,533 | 413 |
| San Luis Reservoir Total | 2,027,835 | 1,815,496 | 1,405,750 | 1,574,042 | 1,609,782 | -51,191 |
| DWR | 1,062,180 | 1,063,619 | 846,213 | 840,792 | 846,213 | -37,177 |
| USBR | 965,655 | 784,781 | 445,304 | 733,250 | 763,569 | -14,014 |
| Pyramid Lake | 169,901 | 169,025 | 150,446 | 163,256 | 161,645 | -2,461 |
| Castaic Lake | 319,247 | 289,237 | 248,811 | 284,244 | 287,087 | 4,148 |
| Silverwood Lake | 74,970 | 72,436 | 49,526 | 69,240 | 72,121 | -134 |
| Lake Perris | 132,614 | 124,647 | 107,043 | 104,797 | 117,398 | -22 |
| Total (4) | 5,401,512 | 5,307,005 | 3,973,671 | 4,498,790 | 5,062,721 | -31,547 |
Data is preliminary and subject to revision.
Footnotes
- (1)
- Maximum and Minimum storage in the year the week begins (2026).
- (2)
- Average storage for each 05/17 from 1979 through 2026.
- (3)
- Since 05-10-2026.
- (4)
- Does not include USBR San Luis Reservoir storage.