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 05 2024 at 8:40 AM PDT

Next Issuance:

May 06 2024 at 9:00 AM PDT

Monitor Stage: N/A

Flood Stage: 10.0 Feet

Plot Type:

Please Note: Each individual timeseries plotted on the graphical river forecast can be toggled on and off by clicking the legend entry above. If the "Observed (Raw Data)" contains bad data and is toggled off, the plot will scale to the remaining timeseries.

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.
9.5 Feet	Lower Pines and Housekeeping Camp begin flooding.
10.0 Feet	Merced River at Pohono Bridge begins to flood.
11.4 Feet	Water begins to overtop road curbs on Northside Drive. Swinging Bridge overtops.
12.0 Feet	Water on road at Northside Drive, Southside Drive, Sentinel Crossover, and Highway 140 near Cookie Cliff.
12.5 Feet	Northside Drive at Wosky Pond, El Capitan Crossover, and Sentinel Crossover are impassible to vehicles.
23.45 Feet	Flood of record - 01/02/1997. $178 Million damage to Yosemite Valley.

Official 7 Day National Weather Service Forecast (CAZ324)

Today: Mostly sunny. Highs 40 to 50. South winds up to 5 mph shifting to the west 5 to 15 mph in the afternoon.

Tonight: Partly cloudy in the evening then becoming clear. Lows 28 to 34. Northeast winds up to 10 mph.

Monday: Not as cool. Sunny. Highs 51 to 61. South winds up to 5 mph shifting to the southwest in the afternoon.

Monday Night: Mostly clear. Lows 35 to 41. West winds up to 10 mph shifting to the northeast after midnight.

Tuesday: Sunny. Highs 55 to 65. Northeast winds up to 5 mph shifting to the west in the afternoon.

Tuesday Night: Mostly clear. Lows 38 to 44.

Wednesday: Sunny. Highs 59 to 69.

Wednesday Night through Thursday Night: Mostly clear. Lows 40 to 50. Highs 60 to 70.

Friday through Saturday: Mostly clear. Highs 65 to 76. Lows 46 to 52.

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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