National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service



MERCED RIVER - HAPPY ISLES (HPIC1)
Latitude: 37.73º NLongitude: 119.56º WElevation: 4017 Feet
Location: Mariposa County in CaliforniaBulletin Group: San JoaquinRiver Group: San Joaquin
Issuance Time: Jul 14, 2025 at 8:56 AM PDT
Action/Monitor: N/A Minor Flood: 7.5 FeetModerate Flood: 10.0 FeetMajor Flood: 13.27 Feet
Please Note:Ensemble forecasts produced by CNRFC only consider meteorological uncertainty and do not account for hydrologic uncertainty.
Short-Range Peak Exceedance Plot   Product Info.   CSV Ensemble Files (Data in kcfs): Forecast Group | HPIC1
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Location Photographs

ESRI™ Locator Map
Flood Impacts
13.27 FeetFlood of Record: 1/2/97. $178 million in damage to Yosemite Valley.
10.0 FeetNorthside Drive at Wosky Pond, Southside Drive at Chapel Meadow, El Capitan crossover, and Sentinel crossover are impassable to vehicles.
8.2 FeetSwinging Bridge overtops. Water on road at Northside Drive, Southsie Drive, El Capitan crossover, and Sentinel crossover.
7.5 FeetFlood Stage. Housekeeping camp and Yosemite Valley backpacker campground begin to flood.
7.0 FeetNorth Pines and Lower Pines campgrounds begin flooding.
Official 7 Day National Weather Service Forecast   (CAZ324)
Today: Sunny. Highs 85 to 99. South winds up to 5 mph shifting to the southwest 5 to 15 mph in the afternoon.

Tonight: Clear. Lows 62 to 70. Southwest winds up to 10 mph shifting to the east after midnight.

Tuesday: Sunny. Highs 80 to 94. Southeast winds up to 5 mph shifting to the southwest 5 to 15 mph in the afternoon.

Tuesday Night: Clear. Lows 58 to 66. West winds 5 to 10 mph shifting to the east after midnight.

Wednesday: Sunny. Highs 77 to 91. Southeast winds up to 5 mph shifting to the southwest in the afternoon.

Wednesday Night: Mostly clear. Lows 57 to 65.

Thursday: Sunny. Highs 77 to 91.

Thursday Night: Mostly clear. Lows 57 to 65.

Friday: Sunny. Highs 79 to 93.

Friday Night: Mostly clear. Lows 59 to 67.

Saturday through Sunday: Clear. Highs 80 to 94. Lows 59 to 67.