Timestamp: 04-20-2026 07:01:06
DIVISION OF OPERATIONS AND MAINTENANCE
SUMMARY OF SWP RESERVOIR
04-13-2026 to 04-19-2026
All Values in (AF)
| Oroville Complex | This Week Maximum Day | This Week Minimum Day | 04-19-2026 Reading | Total for Week |
|---|---|---|---|---|
| Inflow To Lake Oroville | 22,961 | 12,301 | 12,301 | 114,142 |
| Total Releases from Hyatt Power Plant (Includes Pumpack) | 7,101 | 4,247 | 6,249 | 41,458 |
| River Valve Flow | 0 | 0 | 0 | 0 |
| Spill | 4,314 | 3,471 | 3,570 | 25,635 |
| Storage | 3,266,237 | 3,232,615 | 3,266,237 | - |
| Flood Control - Amount of Encroachment | 198,642 | 118,679 | 118,679 | - |
| Releases to Feather River (Sum of River Outlet and Diversion Dam Releases) | 9,917 | 9,917 | 9,917 | 69,419 |
| Releases to Feather River for Flood Control | 7,835 | 7,834 | 7,835 | 54,839 |
| Reservoir Storage | Operational Capacity | This Year Maximum Storage (1) | This Year Minimum Storage (1) | Average Storage (2) | 04-19-2026 Reading | Net Change this Week (3) |
|---|---|---|---|---|---|---|
| Frenchman Lake | 55,475 | 57,038 | 46,498 | 9,677 | 56,030 | -143 |
| Lake Davis | 84,371 | 83,050 | 72,982 | 13,220 | 82,970 | 199 |
| Antelope Lake | 22,564 | 23,609 | 19,328 | 4,183 | 22,947 | -131 |
| Lake Oroville | 3,440,276 | 3,266,237 | 2,404,046 | 498,615 | 3,266,237 | 45,963 |
| Lake Del Valle | 39,914 | 38,102 | 28,778 | 7,136 | 38,102 | 1,467 |
| San Luis Reservoir Total | 2,027,835 | 1,815,496 | 1,405,750 | 298,205 | 1,769,842 | -24,542 |
| DWR | 1,062,180 | 1,063,619 | 960,446 | 158,267 | 990,101 | -19,502 |
| USBR | 965,655 | 784,781 | 445,304 | 139,937 | 779,741 | -5,040 |
| Pyramid Lake | 169,901 | 169,025 | 150,446 | 30,619 | 162,283 | -1,231 |
| Castaic Lake | 319,247 | 275,950 | 248,811 | 50,588 | 271,817 | 1,007 |
| Silverwood Lake | 74,970 | 72,436 | 49,526 | 12,933 | 71,378 | -982 |
| Lake Perris | 132,614 | 124,647 | 107,043 | 20,582 | 113,616 | 3,912 |
| Total (4) | 5,401,512 | 5,173,713 | 4,087,904 | 805,820 | 5,075,481 | 30,559 |
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 04/19 from 1979 through 2026.
- (3)
- Since 04-12-2026.
- (4)
- Does not include USBR San Luis Reservoir storage.