CNRFC - Hydrology - River Guidance - Graphical RVF

Location:

MERCED RIVER - YOSEMITE NP AT POHONO BRIDGE (POHC1)

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

Issuance Time:

May 31 2023 at 8:46 AM PDT

Next Issuance:

Jun 01 2023 at 9:00 AM PDT

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
2022	4,810	8.55	Oct 25 2021
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
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

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.

Official 7 Day National Weather Service Forecast (CAZ324)

Today: Sunny. A 20 percent chance of thunderstorms in the late morning and afternoon. Highs 65 to 75. Southwest winds up to 10 mph.

Tonight: Mostly clear. Lows 44 to 52. Northwest winds up to 10 mph shifting to the east after midnight.

Friday: Sunny. Highs 68 to 78. Southeast winds up to 5 mph shifting to the west in the afternoon.

Friday Night: Clear. Lows 49 to 55. West winds up to 10 mph shifting to the northeast after midnight.

Saturday: Sunny. Highs 72 to 82. East winds up to 5 mph shifting to the southwest in the afternoon.

Saturday Night: Partly cloudy. Lows 51 to 59.

Sunday: Sunny in the morning, then partly sunny with chance of rain showers in the afternoon. Highs 73 to 83. Chance of showers 30 percent.

Sunday Night: Mostly cloudy. Chance of rain showers in the evening. Lows 52 to 58. Chance of showers 30 percent.

Monday: Partly sunny. Chance of rain showers in the afternoon. Highs 70 to 80. Chance of showers 40 percent.

Monday Night: Mostly cloudy with chance of rain showers in the evening, then partly cloudy after midnight. Lows 49 to 55. Chance of showers 30 percent.

Tuesday: Partly sunny. Chance of rain in the morning, then chance of rain showers in the afternoon. Highs 65 to 75. Chance of precipitation 50 percent.

Tuesday Night: Mostly cloudy. Chance of rain showers in the evening. Lows 47 to 53. Chance of showers 30 percent.

Wednesday: Partly sunny. Chance of rain showers in the afternoon. Highs 64 to 74. Chance of showers 40 percent.

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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Verification - Historical Graphical RVF
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