Timestamp: 05-04-2026 07:01:07
STATE OF CALIFORNIA
DEPARTMENT OF WATER RESOURCES
THE RESOURCES AGENCY

DIVISION OF OPERATIONS AND MAINTENANCE

SUMMARY OF SWP RESERVOIR

04-27-2026 to 05-03-2026

All Values in (AF)

Oroville Complex This Week Maximum Day This Week Minimum Day 05-03-2026 Reading Total for Week
Inflow To Lake Oroville 11,649 8,546 8,546 70,217
Total Releases from Hyatt Power Plant (Includes Pumpack) 6,667 2,993 2,993 27,421
River Valve Flow 0 0 0 0
Spill 1,339 0 0 1,339
Storage 3,336,790 3,299,944 3,336,790 -
Flood Control - Amount of Encroachment 90,221 23,817 23,817 -
Releases to Feather River (Sum of River Outlet and Diversion Dam Releases) 7,025 2,777 2,777 29,635
Releases to Feather River for Flood Control 4,942 694 694 15,054
Reservoir Storage Operational Capacity This Year Maximum Storage (1) This Year Minimum Storage (1) Average Storage (2) 05-03-2026 Reading Net Change this Week (3)
Frenchman Lake 55,475 57,038 46,498 42,551 55,903 -32
Lake Davis 84,371 83,090 72,982 66,017 82,930 -40
Antelope Lake 22,564 23,609 19,328 22,345 22,797 -75
Lake Oroville 3,440,276 3,336,790 2,404,046 2,839,253 3,336,790 40,018
Lake Del Valle 39,914 40,418 28,778 39,411 40,241 700
San Luis Reservoir Total 2,027,835 1,815,496 1,405,750 1,680,532 1,724,951 -21,069
DWR 1,062,180 1,063,619 947,097 890,101 947,097 -20,080
USBR 965,655 784,781 445,304 790,431 777,854 -989
Pyramid Lake 169,901 169,025 150,446 163,579 161,545 -3,433
Castaic Lake 319,247 276,662 248,811 282,991 274,974 6,132
Silverwood Lake 74,970 72,436 49,526 69,220 72,178 277
Lake Perris 132,614 124,647 107,043 104,825 117,487 133
Total (4) 5,401,512 5,247,334 4,074,555 4,520,293 5,111,942 23,600

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 05/03 from 1979 through 2026.
(3)
Since 04-26-2026.
(4)
Does not include USBR San Luis Reservoir storage.