CNRFC - Hydrology - River Guidance - Graphical RVF

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

Issuance Time:

May 30 2020 at 8:57 AM PDT

Next Issuance:

May 31 2020 at 9:00 AM PDT

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
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
2015	2,370	6.16	Feb 9, 2015
Historical High Stage/Flow Events (Period of Record - Oct 1916 to Present)
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 (CAZ192)

Tonight: Mostly clear. Lows 43 to 50 at 5000 feet and 33 to 41 at 8000 feet. Gusts up to 40 mph in the evening.

Sunday: Mostly cloudy. Not as cool. Highs 64 to 72 at 5000 feet and 54 to 64 at 8000 feet.

Sunday Night: Partly cloudy in the evening then becoming mostly cloudy. Lows 49 to 56 at 5000 feet and 39 to 46 at 8000 feet.

Monday: Mostly cloudy. Slight chance of showers in the afternoon. Highs 65 to 73 at 5000 feet and 55 to 63 at 8000 feet.

Monday Night: Mostly cloudy. Slight chance of showers in the evening. Lows 50 to 58 at 5000 feet and 40 to 48 at 8000 feet.

Tuesday: Mostly cloudy. Slight chance of thunderstorms in the afternoon. Highs 72 to 80 at 5000 feet and 60 to 68 at 8000 feet.

Tuesday Night: Mostly cloudy with a slight chance of thunderstorms in the evening, then partly cloudy after midnight. Lows 53 to 60 at 5000 feet and 43 to 50 at 8000 feet.

Wednesday: Mostly cloudy. Chance of showers and slight chance of thunderstorms in the afternoon. Chance of precipitation 40 percent. Highs 73 to 81 at 5000 feet and 61 to 69 at 8000 feet.

Wednesday Night: Mostly cloudy with a slight chance of thunderstorms in the evening, then partly cloudy after midnight. Lows 52 to 60 at 5000 feet and 42 to 50 at 8000 feet.

Thursday: Mostly cloudy. Chance of showers and slight chance of thunderstorms in the afternoon. Chance of precipitation 30 percent. Highs 73 to 81 at 5000 feet and 61 to 69 at 8000 feet.

Thursday Night: Partly cloudy. Slight chance of thunderstorms in the evening. Lows 50 to 57 at 5000 feet and 41 to 47 at 8000 feet.

Friday: Mostly cloudy. Slight chance of showers in the afternoon. Highs 67 to 75 at 5000 feet and 56 to 64 at 8000 feet.

Friday Night and Saturday: Partly cloudy. Lows 46 to 53 at 5000 feet and 38 to 44 at 8000 feet. Highs 63 to 71 at 5000 feet and 52 to 62 at 8000 feet.

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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