USGS - science for a changing world

Colorado DroughtWatch

home information/data projects publications droughtwatch hazards contact

Silver Jack Reservoir, photo by Trisha Solberg, 2000.

Drought Watch



USGS Water Science Centers are located in each state.

There is a USGS Water Science Center office in each State. Washington Oregon California Idaho Nevada Montana Wyoming Utah Colorado Arizona New Mexico North Dakota South Dakota Nebraska Kansas Oklahoma Texas Minnesota Iowa Missouri Arkansas Louisiana Wisconsin Illinois Mississippi Michigan Indiana Ohio Kentucky Tennessee Alabama Pennsylvania West Virginia Georgia Florida Caribbean Alaska Hawaii New York Vermont New Hampshire Maine Massachusetts South Carolina North Carolina Rhode Island Virginia Connecticut New Jersey Maryland-Delaware-D.C.

Colorado DroughtWatch

More detailed information on drought in Colorado is available for:
Surface water | Groundwater | Climatic

Map of below normal 7-day average streamflow compared to historical streamflow for the day of year

Map of below normal 7-day average streamflow compared to historical streamflow for the day of year.

Map legend for below normal 7-day average streamflow condition map

The "Below normal streamflow" map (from the USGS Drought Watch Web site) depicts 7-day average streamflow conditions as measured at USGS gaging stations. The colors represent 7-day average streamflow compared to percentiles of historical weekly streamflow for the week 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.

Uncolored circles depict stations having less than 30 years of record, having streamflows near or above normal, or that are currently not transmitting.

The data used to produce this map are provisional and have not been reviewed or edited. They may be subject to significant change.

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo logo U.S. Department of the Interior | U.S. Geological Survey
Page Contact Information: gs-w-codist_webmaster
Page Last Modified: Wednesday, 23-Jul-2014 14:47:41 EDT