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: Feb 15 2019 at 3:10 PM PSTNext Issuance: Feb 16 2019 at 9:00 AM 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)
Tonight: Snow showers. Very windy. Colder. Snow accumulation up to 4 inches. Lows 20 to 26 at 5000 feet and 8 to 16 at 8000 feet. West winds around 25 mph with gusts to around 45 mph and southwest 35 to 45 mph with gusts to around 70 mph over higher elevations.

Saturday: Snow showers. Very windy. Snow accumulation up to 6 inches. Highs 29 to 34 at 5000 feet and 18 to 23 at 8000 feet. Southwest winds around 25 mph with gusts to around 45 mph and Southwest 35 to 45 mph with gusts to around 70 mph over higher elevations.

Saturday Night: Snow showers, west winds around 25 mph with gusts to around 45 mph in the evening. Near the crest, snow showers likely in the evening, then snow showers after midnight. Over higher elevations, southwest winds 25 to 35 mph, gusts up to 60 mph in the evening decreasing to 40 mph after midnight. Windy. Snow accumulation up to 3 inches. Lows 20 to 25 at 5000 feet and 6 to 12 at 8000 feet.

Sunday: Snow showers. Snow accumulation up to 2 inches. Total snow accumulation 4 to 30 inches. Highs 30 to 35 at 5000 feet and 17 to 22 at 8000 feet.

Sunday Night: Mostly cloudy. Chance of snow showers in the evening, then slight chance of snow showers after midnight. Breezy. Chance of snow 50 percent. Lows 15 to 21 at 5000 feet and 4 to 10 at 8000 feet. North winds around 25 mph with gusts to around 40 mph over higher elevations.

Washingtons Birthday: Mostly sunny with a slight chance of snow showers. Highs 32 to 38 at 5000 feet and 18 to 26 at 8000 feet.

Monday Night and Tuesday: Mostly clear. Lows 23 to 31 at 5000 feet and 3 to 13 at 8000 feet. Highs 34 to 40 at 5000 feet and 24 to 30 at 8000 feet.

Tuesday Night: Partly cloudy. Slight chance of snow showers after midnight. Lows 20 to 26 at 5000 feet and 8 to 14 at 8000 feet.

Wednesday: Mostly cloudy. Slight chance of snow showers in the morning, then chance of snow showers in the afternoon. Breezy. Chance of snow 50 percent. Highs 34 to 40 at 5000 feet and 23 to 29 at 8000 feet.

Wednesday Night: Snow showers likely in the evening, then chance of snow showers after midnight. Chance of snow 70 percent. Lows 24 to 30 at 5000 feet and 11 to 17 at 8000 feet.

Thursday: Cloudy with a 50 percent chance of snow showers. Breezy. Highs 32 to 38 at 5000 feet and 23 to 29 at 8000 feet.

Thursday Night: Mostly cloudy. Slight chance of snow showers in the evening. Breezy. Lows 21 to 29 at 5000 feet and 6 to 14 at 8000 feet.

Friday: Mostly sunny. Not as cold. Highs 39 to 45 at 5000 feet and 29 to 37 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.