RIVER GAUGE · MERCED RIVER
Merced River at Happy Isles
Mariposa County, California
Water level0.74 ft
Flow7 cfs
Last readingSep 16, 2026, 4:30 PM UTC (last recorded)
Minor flood7.5 ft3,753 cfs
Moderate flood10 ft7,940 cfs
Major flood13.27 ft10,100 cfs
The past week
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What floods at each level
- 13.27 ft
Flood of Record: 1/2/97. $178 million in damage to Yosemite Valley.
- 10 ft
Northside Drive at Wosky Pond, Southside Drive at Chapel Meadow, El Capitan crossover, and Sentinel crossover are impassable to vehicles.
- 8.2 ft
Swinging Bridge overtops. Water on road at Northside Drive, Southsie Drive, El Capitan crossover, and Sentinel crossover.
- 7.5 ft
Flood Stage. Housekeeping camp and Yosemite Valley backpacker campground begin to flood.
- 7 ft
North Pines and Lower Pines campgrounds begin flooding.
Highest crests on record
| Date | Level | Flow |
|---|---|---|
| Jan 1, 1997 | 13.27 ft | 10,100 cfs |
| Dec 22, 1955 | 12.73 ft | 9,840 cfs |
| Nov 17, 1950 | 11.55 ft | 9,260 cfs |
More on Merced River
DownstreamMerced River at Pohono Bridge
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