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California Reservoir Levels
Eight major reservoirs, updated daily from CDEC gauges - with percent-of-average context for this date.
Western Reservoir Conditions·Daily·No. 47··Latest reading
- The 8 California reservoirs tracked here hold 12.52 million acre-feet as of - 64.3% of their combined 19.47 million acre-foot capacity.
- Fullest right now: Lake Berryessa at 85.8%. Lowest: Folsom Lake at 46.1%.
- All data from California DWR CDEC daily gauges (sensor 6 elevation, sensor 15 storage), rebuilt daily.
85.8%
High
430.38 ft · 1,374,567 AF
wk -0.48 ft · yr -1.18 ft
gauge outage - last reading August 30, 2026
64.8%
Moderate
1,008.95 ft · 1,554,776 AF
wk -0.76 ft · yr -8.90 ft
71.5%
Moderate
2,322.89 ft · 1,749,559 AF
wk -1.74 ft · yr -12.17 ft
78.4%
High
792.94 ft · 1,591,663 AF
wk -1.61 ft · yr -2.77 ft
65.6%
Moderate
485.07 ft · 1,339,733 AF
wk +4.78 ft · yr +42.77 ft
All 8, side by side
| Reservoir | % full | How full | % of date avg | Elevation (ft) | Storage (AF) | 1-yr change | Record low |
|---|---|---|---|---|---|---|---|
| Shasta Lake | 56.6% | Moderate | 101% | 987.97 | 2,574,899 | -10.73 ft | 882.24 ft (2021) |
| Lake Oroville | 54.9% | Moderate | 95% | 779.18 | 1,880,418 | -33.90 ft | 628.63 ft (2021) |
| Folsom Lake | 46.1% | Low | 89% | 410.08 | 450,413 | -2.62 ft | 347.16 ft (1988) |
| Lake Berryessa | 85.8% | High | 118% | 430.38 | 1,374,567 | -1.18 ft | 361.75 ft (1992) |
| New Melones Lake | 64.8% | Moderate | 117% | 1,008.95 | 1,554,776 | -8.90 ft | 721.15 ft (1992) |
| Trinity Lake | 71.5% | Moderate | 109% | 2,322.89 | 1,749,559 | -12.17 ft | 2,179.14 ft (2015) |
| Don Pedro Reservoir | 78.4% | High | 114% | 792.94 | 1,591,663 | -2.77 ft | 671.19 ft (2015) |
| San Luis Reservoir | 65.6% | Moderate | 169% | 485.07 | 1,339,733 | +42.77 ft | 344.96 ft (1989) |
Effectively full 95% and aboveHigh 75–95%Moderate 50–75%Low 30–50%Very low 15–30%Critically low under 15%
These bands describe share of capacity, not drought severity - some reservoirs are held near the top of a narrow band by design. How they are defined.
"% of date avg" compares today's storage with the average storage on this calendar date across each reservoir's CDEC record (mostly since 1985) - the quickest honest answer to "is this normal for this time of year?".