CNRFC - Hydrology - Observed River/Reservoir Conditions

MERCED RIVER - YOSEMITE NP AT POHONO BRIDGE (POHC1)

Latitude: 37.72º N	Longitude: 119.67º W	Elevation: 3862 Feet
Location: Mariposa County in California		River Group: San Joaquin

Monitor Stage: N/A

Flood Stage: 10.0 Feet

Observed Data Credit
	Raw streamflow data is provided by the US Geological Survey (USGS). View USGS Data for this station location.

Historical Stage/Flow Data
Water Year	Peak Discharge (cfs)	Stage (feet)	Date
Most Recent 5 Years
2021	2,160	5.92	May 6, 2021
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
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
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Official 7 Day National Weather Service Forecast (CAZ324)

Today: Mostly sunny. A 20 percent chance of rain late in the afternoon. Highs 47 to 53. East winds up to 10 mph shifting to the south in the afternoon.

Tonight: Windy. Rain and snow in the evening, then rain, snow and slight chance of thunderstorms after midnight. Precipitation may be heavy at times. Snow accumulation up to 13 inches. Lows 28 to 34. South winds 15 to 25 mph shifting to the southwest 20 to 30 mph after midnight. Gusts up to 45 mph. Chance of precipitation near 100 percent.

Sunday: Colder. Snow and rain in the morning, then snow showers in the afternoon. Snow may be heavy at times. Snow accumulation up to 10 inches. Total snow accumulation up to 23 inches. Snow level 4100 feet. Near steady temperature in the lower 30s. Southwest winds 5 to 15 mph. Chance of precipitation near 100 percent.

Sunday Night: Colder. Mostly cloudy in the evening then clearing. Lows 20 to 26. Northeast winds up to 10 mph.

Monday: Sunny. Highs 40 to 46. Northeast winds 5 to 10 mph shifting to the northwest in the afternoon.

Monday Night through Wednesday Night: Mostly clear. Lows 29 to 37. Highs 46 to 53.

Thursday through Friday: Mostly clear. Highs 51 to 58. Lows 33 to 39.

Impacts - E19 Information
7.0 Feet	River is closed to rafters and floatation.
9.0 Feet	Chapel Meadow (south side of river) and Cooks Meadow (north side of river) begins to experience overflow.
9.5 Feet	Portion 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 Feet	Western 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 Feet	Northside Drive and Southside Drive, which are the major roads in Yosemite Valley, become flooded and are closed to traffic.
23.45 Feet	Flood 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.

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