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: Nov 13 2019 at 1:46 PM PSTNext Issuance: Nov 14 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
2018
8,060
10.09
Apr 7, 2018
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
 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   (CAZ192)
Tonight: Partly cloudy. Lows 44 to 54 at 5000 feet and 34 to 44 at 8000 feet.

Thursday: Sunny. Highs 60 to 68 at 5000 feet and 50 to 58 at 8000 feet.

Thursday Night: Partly cloudy. Colder. Lows 38 to 48 at 5000 feet and 30 to 38 at 8000 feet.

Friday: Mostly sunny. Highs 56 to 64 at 5000 feet and 48 to 54 at 8000 feet.

Friday Night: Mostly clear. Lows 40 to 50 at 5000 feet and 31 to 39 at 8000 feet.

Saturday through Sunday: Mostly clear. Highs 63 to 73 at 5000 feet and 55 to 63 at 8000 feet. Lows 43 to 53 at 5000 feet and 35 to 43 at 8000 feet.

Sunday Night: Partly cloudy. Lows 43 to 53 at 5000 feet and 34 to 42 at 8000 feet.

Monday: Sunny. Highs 64 to 72 at 5000 feet and 54 to 62 at 8000 feet.

Monday Night: Clear. Lows 39 to 49 at 5000 feet and 30 to 38 at 8000 feet.

Tuesday: Sunny. Highs 58 to 66 at 5000 feet and 49 to 57 at 8000 feet.

Tuesday Night and Wednesday: Partly cloudy. Breezy, colder. Lows 33 to 43 at 5000 feet and 26 to 34 at 8000 feet. Highs 50 to 58 at 5000 feet and 40 to 46 at 8000 feet.
Impacts - E19 Information
7.0 FeetCampgrounds at North Pines and Housekeeping Camp begin to flood.
9.5 FeetSubstantial road flooding occurs at Sentinel Crossover, Wosky Pond, and Chapel Meadow. Water is approximately one foot deep on the road through Chapel Meadow.
10.0 FeetNorthside and Southside Drive are impassable to vehicles. Water comes 1.5 feet up the side of the Yosemite Creek Lift Station and 1 to 2 inches above the foundation of pumps that control the Housekeeping Camp Lift Station. Water flows two feet over the "swinging bridge".
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.