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

Latitude: 37.72º NLongitude: 119.67º WElevation: 3862 Feet
Location: Mariposa County in CaliforniaRiver Group: San Joaquin
Issuance Time: Mar 23 2017 at 2:36 PM PDTNext Issuance: Mar 24 2017 at 9:00 AM PDT
Monitor Stage: N/A Flood Stage: 10.0 Feet
Observed Data Credit
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Raw streamflow data is provided by the US Geological Survey (USGS).
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Verification - Historical Graphical RVF
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Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
 Most Recent 5 Years
Feb 9, 2015
Apr 19, 2014
Apr 30, 2013
Apr 26, 2012
Jun 16, 2011
 Historical High Stage/Flow Events (Period of Record - Oct 1916 to Present)
Jan 03, 1997
Dec 23, 1955
Nov 19, 1950
Dec 11, 1937
Dec 23, 1964
Location Photographs
ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ096)
Tonight: Partly cloudy in the evening then becoming mostly cloudy. Lows 31 to 40 at 5000 feet and 21 to 31 at 8000 feet.

Friday: Chance of rain and snow in the morning, then rain and snow in the afternoon. Near the crest, chance of snow in the morning, then snow in the afternoon. Windy. Snow accumulation up to 7 inches. Snow level 7500 feet. Highs 46 to 56 at 5000 feet and 39 to 45 at 8000 feet. Southwest winds 25 to 30 mph over higher elevations. Gusts up to 55 mph over higher elevations.

Friday Night: Rain and snow in the evening, then showers after midnight. Near the crest, snow in the evening, then snow showers after midnight. Over higher elevations, southwest winds around 25 mph with gusts to around 45 mph in the evening. Breezy. Snow accumulation up to 8 inches. Total snow accumulation up to 15 inches. Snow level 7500 feet. Lows 33 to 41 at 5000 feet and 21 to 31 at 8000 feet.

Saturday: Mostly cloudy with a 50 percent chance of snow showers. Snow level 7000 feet. Highs 47 to 53 at 5000 feet and 37 to 43 at 8000 feet.

Saturday Night: Partly cloudy. Lows 30 to 40 at 5000 feet and 19 to 29 at 8000 feet.

Sunday: Mostly cloudy. Slight chance of rain and snow in the morning, then chance of snow and rain in the afternoon. Chance of precipitation 50 percent. Highs 47 to 55 at 5000 feet and 40 to 46 at 8000 feet.

Sunday Night: Snow and rain likely. Chance of precipitation 70 percent. Lows 32 to 42 at 5000 feet and 21 to 31 at 8000 feet.

Monday: Snow showers with showers likely. Highs 42 to 48 at 5000 feet and 32 to 38 at 8000 feet.

Monday Night: Partly cloudy with a 30 percent chance of snow showers. Lows 29 to 37 at 5000 feet and 17 to 27 at 8000 feet.

Tuesday: Mostly sunny. Breezy. Not as cool. Highs 50 to 56 at 5000 feet and 38 to 48 at 8000 feet.

Tuesday Night and Wednesday: Mostly clear. Lows 32 to 42 at 5000 feet and 23 to 33 at 8000 feet. Highs 52 to 62 at 5000 feet and 42 to 52 at 8000 feet.

Wednesday Night: Partly cloudy with a slight chance of showers. Lows 33 to 43 at 5000 feet and 24 to 34 at 8000 feet.

Thursday: Mostly cloudy with a 40 percent chance of showers. Highs 49 to 57 at 5000 feet and 39 to 45 at 8000 feet.
Impacts - E19 Information
6.5 FeetRiver is closed to rafters and floatation.
9.0 FeetChapel Meadow (south side of river) and Cooks Meadow (north side of river) begins to experience overflow.
9.5 FeetPortion of Lower Pines Campground becomes flooded. Limited site-specific evacuations begin at Housekeeping Camp located along the south-facing bank of the Merced River. (Upstream from Sentinel Bridge and downstream from Stoneman Bridge)
10.0 FeetWestern portion of North Pines Campground, located at the east end of Yosemite Valley between the confluence of the Merced River and Tenaya Creek, begins to flood. Water rises to the base of the swinging bridge downstream from Chapel Meadow.
10.5 FeetWater tops the swinging bridge downstream from Chapel Meadow. Overflow from Woski Pond floods access road (Northside Drive) leading out of the west entrance of the park.
11.5 FeetSewage pumping relay station at North Pines Campground becomes flooded.
12.5 FeetNorthside Drive and Southside Drive, which are the main roads in Yosemite Valley, become flooded and are closed to traffic.
23.45 FeetFlood of record (01/02/1997). $178 Million damage to Yosemite Valley.
Product Disclaimer

This river graphic is not intended to serve as a substitute for official flood watches, warnings, advisories, or statements issued by the NWS San Joaquin Valley-Hanford Weather Forecast Office. Observations are preliminary and subject to change. River levels identified as "forecast" should be consistent with those contained in official NWS products. River levels identified as "guidance" have significant uncertainty due to future weather or reservoir regulation and are provided for planning purposes only.