NOAA - National Weather Service - California Nevada River Forecast Center

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:

May 18 2013 at 9:14 AM PDT

Next Issuance:

May 19 2013 at 9:00 AM PDT

Monitor Stage: N/A

Flood Stage: 10.0 Feet

Historical Stage/Flow Data
Water Year	Peak Discharge (cfs)	Stage (feet)	Date
Most Recent 5 Years
2012	4,230	8.04	Apr 26, 2012
2011	7,160	10.43	Jun 16, 2011
2010	7,010	10.45	Jun 07, 2010
2009	4,900	8.78	May 02, 2009
2008	4,370	8.13	May 18, 2008
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

Google™ Locator Map

Official 7 Day National Weather Service Forecast (CAZ096)

Today: Sunny and warmer. Highs 65 to 75 at 5000 feet and 54 to 64 at 8000 feet.

Tonight: Mostly clear. Lows 40 to 50 at 5000 feet and 31 to 41 at 8000 feet.

Sunday: Sunny. Highs 69 to 79 at 5000 feet and 57 to 67 at 8000 feet.

Sunday Night: Clear. Lows 41 to 51 at 5000 feet and 34 to 44 at 8000 feet.

Monday: Sunny. Highs 73 to 83 at 5000 feet and 60 to 70 at 8000 feet.

Monday Night through Tuesday Night: Mostly clear. Windy. Lows 41 to 51 at 5000 feet and 33 to 43 at 8000 feet. Highs 72 to 82 at 5000 feet and 59 to 69 at 8000 feet.

Wednesday and Wednesday Night: Mostly clear. Breezy and cooler. Highs 61 to 71 at 5000 feet and 50 to 60 at 8000 feet. Lows 39 to 49 at 5000 feet and 31 to 41 at 8000 feet.

Thursday and Thursday Night: Partly cloudy. Highs 54 to 64 at 5000 feet and 43 to 53 at 8000 feet. Lows 35 to 45 at 5000 feet and 29 to 39 at 8000 feet.

Friday: Mostly sunny. Highs 59 to 69 at 5000 feet and 48 to 58 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.
10.5 Feet	Water tops the swinging bridge downstream from Chapel Meadow. Overflow from Woski Pond floods access road (Northside Drive) leading out of the west entrance of the park.
11.5 Feet	Sewage pumping relay station at North Pines Campground becomes flooded.
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.

Observed Data Credit
	Raw streamflow data is provided by the US Geological Survey (USGS). View USGS Data for this station location.