Wyoming Spring 2014 Snowmelt Flood Potential Outlook---April 28th

Quick Synopsis:

 

Mountain snowpack and associated snow water equivalents (SWEs) across Wyoming continued to be above average (at 130% of median) by late April.  SWEs at the peak snowmelt runoff elevations (8,000’ – 9.500’) continued to be the highest across basins along the northern third of Wyoming at 130 to 160 percent of median.  The Upper Green Basin had SWEs at 150 to 165 percent of median by late April.  

 

 

Moderate to High potential for flooding associated with snowmelt runoff is expected across various headwater streams along the central and southern Big Horn Mountains.  Streams with the highest potential for flooding include:  Middle Fork of the Powder River (Kaycee), Medicine Lodge Creek, Ten Sleep Creek (Ten Sleep), and Nowood River (Manderson)…

 

Moderate to High potential for flooding due to snowmelt is also expected along the Encampment River near Encampment/Riverside and the North Platte River at Saratoga…

 

Moderate to High potential for flooding associated with snowmelt runoff is forecasted along the Wind River (Crowheart to Riverton), the North Fork Shoshone River near Wapiti, and the South Fork the Shoshone River downstream of Valley…

 

Moderate to High potential for flooding associated with snowmelt runoff is expected along the Green River near LaBarge...

 

Moderate potential for flooding due to springtime snowmelt is expected along Clear Creek near Buffalo, Little and Big Goose Creeks near Sheridan, Salt River and tributary streams, and various headwater streams along the Upper Green Basin…  

 

The next and last graphical outlook will be issued around the 12th of May. 

 

*****************************************************************************************

Other hydrological information for Wyoming can be found at the NOAA hydrology website:

http://www.crh.noaa.gov/riw/?n=snowpack

 

Monthly Wyoming Hydrologic Summary and Graphics:

(updated monthly around the 15th of every month)

http://www.crh.noaa.gov/images/riw/hydro/hydro_report.pdf

Wyoming Drought Information Page:

(updated at least once a month)

http://www.crh.noaa.gov/riw/?n=drought

 

Wyoming Graphical Water Supply Outlook:

(updated by the 15th of every month—January-June)

http://www.crh.noaa.gov/images/riw/hydro/watersupply.png

 

Wyoming Average Precipitation by Basin:

 (updated monthly)

http://www.crh.noaa.gov/images/riw/hydro/wyomingprecip.png

 

 

Wyoming Spring Snowmelt Runoff Flood Potential Graphic:

(updated by the 25th of the month---January-May)

http://www.crh.noaa.gov/images/riw/hydro/floodoutlook.png

 

 

Current and Forecast Wyoming Streamflows and/or River Stages:

 

http://water.weather.gov/ahps2/index.php?wfo=riw

 

http://waterdata.usgs.gov/wy/nwis/rt

*******************************************************************************

The current Wyoming Spring 2014 Snowmelt Runoff Flood Potential Outlook graphic:

 

 

 

This outlook is based on various diverse hydrological factors such as snow water equivalents (SWEs) in the mountain snowpack, basin morphology (i.e. how basins respond to snowmelt), extent of burn scars from 2012 and 2013 fires, amount of bark beetle kill, soil moisture trends, and likely temperature and precipitation trends during peak runoff.

HIGHLIGHTS:



Return to News Archive

USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.