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 POHONO BRIDGE (POHC1)
Latitude: 37.72º NLongitude: 119.67º WElevation: 3862 Feet
Location: Mariposa County in CaliforniaRiver Group: San Joaquin
Issuance Time: Oct 17 2021 at 11:16 AM PDTNext Issuance: Oct 18 2021 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).
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
2020
3,560
7.41
Apr 30, 2020
2019
6,770
10.13
Jun 6, 2019
2018
12,100
13.68
Apr 7, 2018
2017
10,500
12.69
Jan 9, 2017
2016
4,080
7.90
May 14, 2016
 Historical High Stage/Flow Events (Period of Record - Oct 1916 to Present) - Ranked by Flow
1997
24,600
23.43
Jan 03, 1997
1956
23,400
21.52
Dec 23, 1955
1951
23,000
19.98
Nov 19, 1950
1938
22,000
19.10
Dec 11, 1937
1965
18,000
16.96
Dec 23, 1964
Location Photographs
ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ324)
Today: Sunny, cooler. Highs 44 to 54. Light winds in the morning becoming west 10 to 15 mph in the afternoon.

Tonight: Mostly clear. Lows 29 to 39. Northeast winds up to 10 mph in the evening becoming light and variable after midnight.

Tuesday: Sunny, warmer. Highs 55 to 65. Light winds in the morning becoming southwest around 10 mph in the afternoon.

Tuesday Night: Partly cloudy in the evening then becoming mostly cloudy. Lows 37 to 47. South winds up to 10 mph in the evening becoming light and variable after midnight.

Wednesday: Mostly cloudy. Slight chance of showers in the morning, then chance of showers in the afternoon. Chance of showers 40 percent. Highs 54 to 64. Light winds in the morning becoming southwest around 10 mph in the afternoon.

Wednesday Night: Mostly cloudy. A 30 percent chance of showers in the evening. Lows 40 to 50.

Thursday: Mostly sunny. Warmer. Highs 60 to 70.

Thursday Night: Mostly cloudy. Slight chance of showers after midnight. Lows 42 to 52.

Friday: Mostly cloudy with a 40 percent chance of showers. Highs 55 to 65.

Friday Night: Mostly cloudy. Chance of showers in the evening, then slight chance of showers after midnight. Chance of showers 30 percent. Lows 38 to 48.

Saturday: Mostly cloudy. Slight chance of showers in the afternoon. Highs 53 to 63.

Saturday Night: Mostly cloudy with a 40 percent chance of showers. Lows 37 to 47.

Sunday: Mostly cloudy with a 50 percent chance of showers. Highs 49 to 59.
Impacts - E19 Information
7.0 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".
12.5 FeetNorthside Drive and Southside Drive, which are the major 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.