Instream Flow Requirements of the Lower North Fork, South Fork and Mainstem Skokomish River

摘要

The incremental methodology, developed by the Instream Flow Service Group (Ft. Collins, Colorado), was used to predict discharges that provide optimum area of suitable habitat for anadromous salmonids in the Skokomish River, Washington. Predictions are compared to time of occurrence of fish life stages and to equivalent flow year mean monthly discharges for respective river reaches. Time and deviation of mean monthly discharges in excess or inadequate for optimum fish requirements are determined.