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Flood Warning

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avatar Flood Warning
May 21, 2005 02:29PM
e0078 c5awa00000
d n News-NWS_USJ-A_FLOOD_WAR 05/21 331
A FLOOD WARNING REMAINS IN EFFECT FOR THE MERCED RIVER AT NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA 945 PM PDT FRI MAY 20 2005

...A FLOOD WARNING REMAINS IN EFFECT FOR THE MERCED RIVER AT POHONO BRIDGE...

SNOWMELT HAS PRODUCED ADDITIONAL RISES TO FLOOD STAGE THIS EVENING ALONG THE UPPER MERCED RIVER AT POHONO BRIDGE. ADDITIONAL RISES ARE EXPECTED OVERNIGHT.

HISTORICALLY...WHEN FORECAST OR OBSERVED STAGE AT POHONO BRIDGE REACHES 10.0 FEET...WESTERN PORTION OF NORTH PINE 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.

WHEN FORECAST OR OBSERVED STAGE AT POHONO BRIDGE REACHES 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.

&&

FORECASTS ARE BASED ON PRESENT AND FORECASTED METEOROLOGICAL AND HYDROLOGIC CONDITIONS AT TIME OF ISSUANCE.

MERCED RIVER AT
POHONO 945 PM STAGE 10.0 FT WHICH IS FLOOD STAGE
THEN FORECAST TO RISE TO NEAR 10.6 FT EARLY SATURDAY MORNING
THEN FORECAST TO FLUCTUATE NEAR 10.0 FT THRU SATURDAY EVENING
THEN FORECAST TO RISE TO NEAR 11.5 FT EARLY SUNDAY MORNING
THEN FORECAST TO FLUCTUATE NEAR 11.0 FT THRU SUNDAY MORNING
FLOOD STAGE 10.0 FT

UNLISTED FORECAST POINTS ARE EXPECTED TO REMAIN BELOW MONITOR STAGE. ALL THOSE AFFECTED BY RIVER CONDITIONS SHOULD REMAIN ALERT FOR RAPID CHANGES AND FOR POSSIBLE FORECAST REVISIONS.

FLOOD STAGE...ALONG UNLEVEED SECTIONS OF THE RIVER...OVERBANK FLOWS ARE OF SUFFICIENT MAGNITUDE TO CAUSE CONSIDERABLE INUNDATION OF LAND AND ROADS...OR SIGNIFICANT HAZARD TO LIFE AND PROPERTY. ALONG FLOOD CONTROL PROJECT LEVEES...THIS IS THE STAGE AT WHICH THE FLOW WITHIN THE LEVEE IS AT MAXIMUM DESIGN CAPACITY.

$$

WWW.WEATHER.GOV/HANFORD /USE ALL LOWER CASE/

DUDLEY

EDIS-05-21-05 0100 PDT

avatar Merced River Stage Plot
May 21, 2005 02:36PM


Note: 10 feet is flood stage
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