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

Issuance Time:

Feb 09 2010 at 1:24 PM PST

Next Issuance:

Feb 10 2010 at 9:00 AM PST

Monitor Stage: N/A

Flood Stage: 10.0 Feet

Historical Info	Peak Discharge	Stage	Date
Period of Record	24,600 cfs	23.43 feet	Jan 02, 1997
Dec 1996-Jan 1997	24,600 cfs	23.43 feet	Jan 02
1955	23,400 cfs	21.52 feet	Dec 23
1950	23,000 cfs	20.98 feet	Nov 19

Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

Regional Location Map		Gage Station Location Map

Official 7 Day National Weather Service Forecast (CAZ096)

Tonight: Cloudy. A 50 percent chance of snow showers and a 50 percent chance of showers. Near the crest and snow showers likely in the evening and then chance of snow showers after midnight. Snow level 4000 feet. Lows 25 to 35 at 5000 feet and 12 to 22 at 8000 feet.

Wednesday: Mostly cloudy. A 20 percent chance of snow showers in the morning. Highs 39 to 49 at 5000 feet and 31 to 41 at 8000 feet.

Wednesday Night: Partly cloudy. Lows 25 to 35 at 5000 feet and 12 to 22 at 8000 feet.

Thursday: Mostly sunny. Highs 46 to 54 at 5000 feet and 36 to 46 at 8000 feet.

Thursday Night: Partly cloudy. Lows 26 to 36 at 5000 feet and 14 to 24 at 8000 feet.

Friday: Mostly cloudy with a slight chance of snow showers. Highs 49 to 57 at 5000 feet and 38 to 48 at 8000 feet.

Friday Night through Tuesday: Partly cloudy. Lows 31 to 41 at 5000 feet and 19 to 29 at 8000 feet. Highs 53 to 63 at 5000 feet and 43 to 53 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 Tenya 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 pumps relay station at North Pines Campground becomes flooded.
23.5 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.