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Instream Flow

Skagit River Basin - Studies, news, and other information

General Information

Fish Studies

The Skagit River Instream Flow rule was based on scientific studies conducted by third party consultants, then peer-reviewed by an additional third party consultant for validity and appropriateness.  In June 1999, Duke Engineering and Services, Inc. issued its technical report. This report was reviewed by Hardin-Davis, Inc. in March of 2005.  The 1999 Duke Report is the basis for the Skagit Instream Flow Rule (WAC 173-503):

Groundwater Studies

The USGS, in partnership with Skagit County Public Works, Skagit County PUD No. 1, and Ecology has studied groundwater conditions in the lower Skagit River Basin and developed a groundwater flow model. The studies and model are intended to understand the physical system and evaluate the effects of potential ground-water withdrawals and consumptive use on streamflow in four tributary subbasins (the East Fork and mainstem of Nookachamps Creek, Fisher Creek, and Carpenter Creek).

Water solution studies

News articles