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Current Theme: Watershed

Streamflow Data

Historical streamflow in the Boulder Creek watershed

General information about drought, with specific information on the 2002 drought.

General information about floods.
Flash flooding in the Boulder area

Urban Storm Runoff Demonstration Project


We depend on our streams for drinking water and other domestic uses, irrigation of crops, power generation, industrial use, aquatic life habitat, and recreational use. Water is a precious resource in the Boulder area, and how the volume of water flowing in our streams can vary a great deal from year to year, season to season, day to day, and even hour to hour.

USGS stream gage on Boulder Creek at 75th Street.

Boulder Falls (on North Boulder Creek) in 1919.

INVITATION BASIN is a community project actively seeking public participation. We appreciate all feedback and welcome comments, suggestions and contributions. To find out more about how you can be involved, click here. Help BASIN serve your needs, take our "10 questions in 10 seconds" survey.

BASIN is supported by the US EPA, the City of Boulder, the Keep it Clean Partnership, BCWI and BCN

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Last Page Update - Tuesday December 27, 2005