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

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MERCED RIVER - YOSEMITE NP AT HAPPY ISLES (HPIC1)
Latitude: 37.73º NLongitude: 119.56º WElevation: 4017 Feet
Location: Mariposa County in CaliforniaRiver Group: San Joaquin
Issuance Time: Dec 10 2018 at 7:49 AM PSTNext Issuance: Dec 10 2018 at 3:00 PM PST
Monitor Stage: N/A Flood Stage: 8.0 Feet
Observed Data Credit
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Raw streamflow data is provided by the US Geological Survey (USGS).
View USGS Data for this station location.

Verification - Historical Graphical RVF
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Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2017
5,210
8.45
Jun 20, 2017
2016
2,490
6.30
May 14, 2016
2015
882
4.25
Feb 9, 2015
2014
1,190
4.71
May 16, 2014
2013
1,750
5.50
Apr 30, 2013
 Historical High Stage/Flow Events (Period of Record - Aug 1915 to Present)
1997
10,100
13.27
Jan 2, 1997
1956
9,840
12.73
Dec 23, 1955
1951
9,260
11.55
Nov 18, 1950
Location Photographs
ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ096)
Today: Mostly cloudy. A 20 percent chance of snow showers in the afternoon. Highs 45 to 51 at 5000 feet and 35 to 43 at 8000 feet.

Tonight: Mostly cloudy in the evening then becoming partly cloudy. A 20 percent chance of snow showers. Colder. Lows 26 to 34 at 5000 feet and 17 to 23 at 8000 feet.

Tuesday: Sunny. Highs 44 to 52 at 5000 feet and 37 to 43 at 8000 feet.

Tuesday Night: Mostly clear. Lows 29 to 37 at 5000 feet and 21 to 27 at 8000 feet.

Wednesday: Mostly sunny. Highs 46 to 53 at 5000 feet and 38 to 44 at 8000 feet.

Wednesday Night through Thursday Night: Mostly clear. Lows 29 to 39 at 5000 feet and 21 to 28 at 8000 feet. Highs 49 to 55 at 5000 feet and 39 to 45 at 8000 feet.

Friday: Mostly cloudy with a slight chance of snow showers. Slight chance of showers in the afternoon. Windy. Highs 45 to 51 at 5000 feet and 34 to 42 at 8000 feet.

Friday Night: Chance of showers in the evening. Partly cloudy with a chance of snow showers. Breezy. Chance of precipitation 40 percent. Lows 28 to 36 at 5000 feet and 19 to 25 at 8000 feet.

Saturday: Mostly sunny. Highs 41 to 47 at 5000 feet and 32 to 38 at 8000 feet.

Saturday Night: Partly cloudy in the evening then becoming mostly cloudy. Slight chance of snow showers. Lows 30 to 37 at 5000 feet and 21 to 27 at 8000 feet.

Sunday: Chance of showers. Chance of snow showers in the morning, then snow showers likely in the afternoon. Windy. Chance of precipitation 60 percent. Highs 41 to 47 at 5000 feet and 32 to 38 at 8000 feet.
Impacts - E19 Information
8.00 FeetCampgrounds at North Pines and Housekeeping Camp begin to flood.
13.27 FeetFlood of record - January 2, 1997.
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.