Extended Streamflow Guidance
Issued by NWS

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FGUS65 KSTR 071719
ESGWY
COLORADO BASIN RIVER FORECAST CENTER
NATIONAL WEATHER SERVICE SALT LAKE CITY UTAH


                     SPRING FLOOD POTENTIAL
          FOR THE GREEN AND BEAR RIVER BASINS IN WYOMING

                       May 7, 2021

The 2021 spring runoff flood potential due to snowmelt is not high at this
time in the Upper Green River and Bear River Basins of southwest Wyoming.

Currently, there are not any sites that are forecast to have mean daily peak flows
at or above the listed threshold at the given exceedance level.

PRECIPITATION(% OF AVERAGE) AND SNOWPACK (% OF MEDIAN):

SUBBASIN                    APR      OCT-APR     MAY 1
                          PRECIP     PRECIP      SNOW
----------------------    ------     -------     -----
GREEN ABV FLAMING GORGE      75         85         70
BEAR RIVER HEADWATERS        60         70         60


It is important to keep in mind that an extended period of much above normal
temperatures or heavy rainfall during the melt period can cause or exacerbate
flooding problems in any year.

A list of specific spring peak flow forecasts is available at:
http://www.cbrfc.noaa.gov/rmap/peak/peaklist.php

A map of the current spring peak flow forecasts is available at:
http://www.cbrfc.noaa.gov/lmap/lmap.php?interface=peak


CBRFC/Nielson/Bernard





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