RIVER GAUGE
Boca Reservoir
Nevada County, California
Water level5586.85 ft
Flow25,000 cfs
Last readingSep 16, 2026, 4:30 PM UTC (last recorded)
Action5604.5 ft40,381 cfs
Minor flood5605 ft40,868 cfs
Moderate flood5606 ft42,000 cfs
Major flood5607 ft43,000 cfs
The past week
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What floods at each level
- 5612 ft
Crest of dam...
- 5605 ft
Maximum water surface elevation/Upper limit of flood control. 40870 acre-feet.
- 5596.4 ft
Lower limit of flood control elevation; 32870 af.
- 5589 ft
Spillway crest elevation, 26650 acre-feet.
- 5521 ft
Top of dead storage; top elevation of outlet works. 240 acre-feet.
- 5512 ft
Streambed at dam axis. Zero storage.
Highest crests on record
| Date | Level | Flow |
|---|---|---|
| Dec 22, 1955 | 5605.55 ft | 41,440 cfs |
| Jul 23, 1975 | 5605.35 ft | 41,200 cfs |
| Jun 14, 1969 | 5605.25 ft | 41,100 cfs |
DownstreamTruckee River at Farad
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