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

Plot Type:

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: Cloudy early in the morning then becoming partly sunny. A 20 percent chance of rain and snow early in the morning. Highs 40 to 48. South winds up to 10 mph.

Tonight: Cloudy. A 30 percent chance of snow after midnight. Lows 29 to 35. East winds up to 10 mph.

Tuesday: Breezy. Rain and chance of snow in the morning, then rain and snow in the afternoon. Snow may be heavy at times in the afternoon. Snow accumulation up to 10 inches. Snow level 4700 feet. Highs 37 to 45. East winds 5 to 15 mph with gusts to around 30 mph increasing to south 15 to 25 mph with gusts to around 40 mph in the afternoon. Chance of precipitation near 100 percent.

Tuesday Night: Snow and rain in the evening, then snow likely after midnight. Snow may be heavy at times in the evening. Heavy snow accumulations. Lows 25 to 31. South winds 10 to 15 mph. Chance of precipitation 90 percent.

Wednesday: Snow likely in the morning, then rain and snow in the afternoon. Moderate snow accumulations. Snow level 4200 feet. Highs 35 to 43. Southeast winds 5 to 15 mph shifting to the southwest 5 to 10 mph in the afternoon. Chance of precipitation 80 percent.

Wednesday Night: Mostly cloudy. A 40 percent chance of rain and snow in the evening. Lows 25 to 31.

Thursday: Partly sunny. A 30 percent chance of rain and snow in the afternoon. Highs 37 to 45.

Thursday Night and Friday: Partly cloudy. Lows 24 to 30. Highs 37 to 45.

Friday Night: Mostly cloudy. Lows 19 to 25.

Saturday: Partly sunny. A 40 percent chance of snow in the afternoon. Highs 35 to 41.

Saturday Night: Mostly cloudy with chance of snow in the evening, then partly cloudy after midnight. Lows 18 to 24. Chance of snow 30 percent.

Sunday: Mostly sunny. A 30 percent chance of snow and rain in the afternoon. Highs 36 to 44.

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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