Wyoming Drought Watch

A Resource for Streamflow Conditions and More

NEWS

07/06/07 Western ground water and climate change--Pivotal to supply sustainability or vulnerable in its own right?

Release: Epic droughts of the last 2000 years: USGS science on climate change.

Release: Key challenges for science identified by the USGS to support western water management.

Release: USGS scientists document widespread increases in streamflow and changes in timing of snowmelt over the past 50 years.

USGS Drought, Climate Variability, and Water Supply Workshop.

USGS Fact Sheet: Climatic Fluctuations, Drought, and Flow in the Colorado River.

USGS Research Links Long-Term Droughts in U.S. to Ocean Temperature Variations.

REALTIME STREAMFLOW

Table || Map of current conditions in Wyoming.

RECENT SUMMARIES

Annual Water Data Report for water year 2006 published. Go here for a brief introduction and link to the product.

Wyoming 2006 final streamflow data online.

RECENT PHOTOGRAPHS

Blacks Fork nr Little America Sep 19, 2007 10.7 ft3/sec (mean = 70). (J. Wheeler, USGS)

More photographs.

DAILY STREAMFLOW CONDITIONS

Map of below-normal streamflow conditions for Wyoming.

Map of the most recent 7-day average streamflow compared to historical streamflow
for the most recent week of the year showing only below-normal hydrologic units.

This map is updated at least daily. Click on the map to view the most recent version.

Explanation
	Extreme Hydrologic Drought	lowest 7-day flow
	Severe Hydrologic Drought	< 5th percentile
	Moderate Hydrologic Drought	6th-9th percentile
	Below Normal	10th-24th percentile
	Normal to Above Normal	> 25th percentile

The map depicts 7-day average streamflow conditions for hydrologic units as measured at USGS gaging stations. The colors represent 7-day average streamflow compared to percentiles of historical weekly streamflow for the day of the year. This map represents conditions adjusted for this time of the year. Only stations having at least 30 years of record are used. Subregions shaded gray indicate insufficient data were available to compute a reliable 7-day average streamflow value.

For an interactive map of the streamflow-gaging stations recording below normal streamflow conditions, click here .

Other maps of || real-time || daily || weekly || streamflow for Wyoming.
Time-series plots of || real-time || daily || weekly || Average Streamflow Index for Wyoming.
National monthly streamflow conditions map.

HISTORICAL STREAMFLOW DATA

Daily streamflow data for over 900 active and discontinued gaging stations in Wyoming.
Daily || Monthly || Annual streamflow statistics for gaging stations in Wyoming.

DROUGHT ANALYSES

02/07 Associations of decadal to multidecadal sea-surface temperature variability with Upper Colorado River flow [Abstract]
01/07 Water year 2006--Another 'compressed' spring in the western United States? [pp. 2-3]
08/18/06 Warming and earlier spring increase western U.S. forest wildfire activity.
Trends and variability in snowmelt runoff in the Western United States.
Changes toward earlier streamflow timing across Western North America.
Reconstruction of precipitation in the Bighorn Basin since 1260 A.D.
Reconstructions of precipitation variability for northeastern Utah since 1226 A.D.
Forecast for water year 2003 spring streamflows for the United States.
Trends in streamflows that are important in the analysis of drought.
USGS Fact Sheet on Drought | HTML || PDF |
Discussion of significant statewide droughts in Wyoming Floods and Droughts (749KB PDF file).
Historical droughts and some water-quality effects in the Yellowstone River Basin.
Analyses of a severe sustained drought on the Colorado River.
Drought and Climate || Evapotranspiration || Fires

DROUGHT MANAGEMENT

Management of Water Resources for Drought Conditions.
Management alternatives for a hypothetical severe drought on the Colorado River.
Drought and Ranching in Arizona.

USGS Resources

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