CNRFC - Hydrology - River Guidance - Graphical RVF

MERCED RIVER - YOSEMITE 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:

Jul 18 2018 at 7:33 AM PDT

Next Issuance:

Jul 19 2018 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
2016	4,080	7.90	May 14, 2016
2015	2,370	6.16	Feb 9, 2015
2014	1,680	5.33	Apr 19, 2014
2013	2,780	6.62	Apr 30, 2013
2012	4,230	8.04	Apr 26, 2012
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 (CAZ096)

Tonight: Partly cloudy. A 20 percent chance of thunderstorms in the evening. Near the crest, chance of thunderstorms in the evening, then slight chance of thunderstorms after midnight. Haze and areas of smoke through the night. Lows 64 to 74 at 5000 feet and 54 to 62 at 8000 feet.

Thursday: Mostly cloudy. Slight chance of thunderstorms in the morning, then chance of thunderstorms in the afternoon, haze and areas of smoke through the day. Near the crest, a 50 percent chance of thunderstorms, haze and areas of smoke in the afternoon. Highs 83 to 89 at 5000 feet and 73 to 79 at 8000 feet.

Thursday Night: Partly cloudy. Chance of thunderstorms in the evening, then slight chance of thunderstorms after midnight. Near the crest, mostly cloudy with a chance of thunderstorms in the evening, then partly cloudy with a slight chance of thunderstorms after midnight. Haze and areas of smoke. Chance of precipitation 50 percent. Lows 63 to 71 at 5000 feet and 52 to 60 at 8000 feet.

Friday: Mostly cloudy. Slight chance of thunderstorms in the morning, then chance of thunderstorms in the afternoon. Haze and areas of smoke through the day. Chance of thunderstorms 50 percent. Highs 81 to 87 at 5000 feet and 70 to 76 at 8000 feet.

Friday Night: Mostly cloudy with a chance of thunderstorms in the evening, then partly cloudy with a slight chance of thunderstorms after midnight. Haze and areas of smoke through the night. Chance of thunderstorms 50 percent. Lows 62 to 70 at 5000 feet and 51 to 59 at 8000 feet.

Saturday through Sunday Night: Partly cloudy with a 50 percent chance of thunderstorms. Highs 80 to 86 at 5000 feet and 69 to 75 at 8000 feet. Lows 62 to 70 at 5000 feet and 51 to 60 at 8000 feet.

Monday and Monday Night: Partly cloudy. Slight chance of thunderstorms. Highs 82 to 88 at 5000 feet and 71 to 77 at 8000 feet. Lows 62 to 72 at 5000 feet and 52 to 61 at 8000 feet.

Tuesday through Wednesday: Mostly clear with a slight chance of thunderstorms. Highs 84 to 91 at 5000 feet and 73 to 80 at 8000 feet. Lows 62 to 72 at 5000 feet and 52 to 61 at 8000 feet.

Impacts - E19 Information
6.5 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 downstream from Chapel Meadow.
12.5 Feet	Northside Drive and Southside Drive, which are the main 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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