Timestamp: 12-22-2025 07:01:05

STATE OF CALIFORNIA

DEPARTMENT OF WATER RESOURCES

THE RESOURCES AGENCY

DIVISION OF OPERATIONS AND MAINTENANCE

SUMMARY OF SWP RESERVOIR

12-15-2025 to 12-21-2025

All Values in (AF)

Oroville Complex	This Week Maximum Day	This Week Minimum Day	12-21-2025 Reading	Total for Week
Inflow To Lake Oroville	102,421	5,275	102,421	153,449
Total Releases from Hyatt Power Plant (Includes Pumpack)	6,122	2,867	3,099	33,868
River Valve Flow	0	0	0	0
Spill	0	0	0	0
Storage	1,861,629	1,740,668	1,861,629	-
Flood Control - Amount of Encroachment	0	0	0	-
Releases to Feather River (Sum of River Outlet and Diversion Dam Releases)	3,471	3,471	3,471	24,297
Releases to Feather River for Flood Control	-	-	-	-

Reservoir Storage	Operational Capacity	This Year Maximum Storage (1)	This Year Minimum Storage (1)	Average Storage (2)	12-21-2025 Reading	Net Change this Week (3)
Frenchman Lake	55,475	56,861	42,429	6,627	43,769	680
Lake Davis	84,371	81,542	65,277	9,824	68,332	2,210
Antelope Lake	22,564	23,609	15,354	2,665	16,306	907
Lake Oroville	3,440,276	3,421,343	1,740,668	271,393	1,861,629	119,505
Lake Del Valle	39,914	40,511	26,098	5,019	28,374	-399
San Luis Reservoir Total	2,027,835	1,841,361	771,746	179,717	1,294,899	12,948
DWR	1,062,180	1,015,784	462,113	110,388	905,188	12,116
USBR	965,655	854,111	242,281	69,329	389,711	832
Pyramid Lake	169,901	169,257	150,637	26,864	153,691	-351
Castaic Lake	319,247	317,123	238,931	37,357	249,427	-250
Silverwood Lake	74,970	73,186	50,911	11,430	66,511	3,746
Lake Perris	132,614	127,759	105,347	17,679	125,103	-846
Total (4)	5,401,512	5,326,975	2,897,765	499,246	3,518,330	137,318

Data is preliminary and subject to revision.

Footnotes

(1): Maximum and Minimum storage in the year the week begins (2025).
(2): Average storage for each 12/21 from 1979 through 2025.
(3): Since 12-14-2025.
(4): Does not include USBR San Luis Reservoir storage.