DATA CENTER

• USGS Real-time data
  • Streamflow
  • Streamflow - Comparisons current/historic
  • Ground water
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• State of Colorado Division of Water Resources
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  • Current conditions
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• USGS Ground-water networks
  • Active ground-water levels

• USGS Historical data
  • Annual Data Reports
  • Instantaneous Data Archive (IDA)

ABOUT THE USGS IN COLORADO

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USGS IN YOUR STATE

USGS Water Science Centers are located in each state.

Water Resources of Colorado

Welcome to the USGS Colorado Water Science Center. These pages are your source for water-resource information collected and interpreted by the U.S. Geological Survey in Colorado.

Explanation of percentile classes

Water-resource activities include:

• Presentation of real-time streamflow, water-quality, ground-water levels data
• Operation and oversight of an extensive network of water-resource monitoring gages
• Archive of water-resource information collected for more than 100 years
• Data collection and investigative studies related to issues of concern to water-management entities and citizens
• Publishing data and topical reports

USGS Colorado Water Science Center Highlights

Events

Water, Energy, and Biogeochemical Budgets (WEBB) Program: Loch Vale Watershed

Loch Vale is an alpine/subalpine watershed in Rocky Mountain National Park where the U.S. Geological Survey has been conducting research since the 1980s. Research is focused on the effects of climate change and atmospheric pollutants on water, soil, vegetation, and aquatic life.

Learn more

Of Current Interest

USGS Investigations on Ground-Water Trends Released in Journal of Environmental Quality (JEQ)

The September/October issue of Journal of Environmental Quality (JEQ) features in-depth U.S. Geological Survey (USGS) investigations of national and regional trends in ground-water quality in the United States. The release of these investigations, primarily focusing on nitrate, pesticides, and pesticide degradates, marks the first of many trends-studies to follow by the USGS National Water-Quality Assessment (NAWQA) Program.

Included in the JEQ are two reports by Colorado authors:

Suzanne S. Paschke and others - Near-Decadal Changes in Nitrate and Pesticide Concentrations in the South Platte River Alluvial Aquifer, 1993–2004

Michael G. Rupert - Decadal-Scale Changes of Nitrate in Ground Water of the United States, 1988–2004

Overall findings, summaries of the other USGS investigations featured in the JEQ, and author contact information are available at http://water.usgs.gov/nawqa/Rosen.trends.09262008.pdf