Document - Flow-Recreation Study Technical Report, Henry M. Jackson Hydroelectric Project


Public Utility District No. 1 of Snohomish County (District) is applying for a new license for the Henry M. Jackson Hydroelectric Project, FERC No. 2157. It is conducting studies of Project effects on environmental resources, including whitewater boating in the 16.5 mile Sultan River from Culmback Dam to the Skykomish River. The study evaluates the effects of Project operations on whitewater recreation opportunities and identifies potential effects of providing whitewater boating flows on other recreation activities such as fishing and mining. Specific study objectives include: identify acceptable and optimal ranges, describe recreation-relevant hydrology of the current operating regime, describe feasibility and effect of providing scheduled releases for whitewater recreation, estimate whitewater use levels if releases were provided, describe existing and potential access issues, and identify potential impacts from whitewater flows on other recreation uses.


Report on instream flow needs for whitewater recreation on the Sultan River.
Document author
Confluence Research
Doug Whittaker
6324 Red Tree Circle
Anchorage, AK 99516
Phone: 907-346-3769

Document Information

Filename - Flow-Recreation Study Technical Report, Henry M. Jackson Hydroelectric Project521.pdf

Size - 14.98MB

Associated Rivers

Associated News

Associated Projects

Sultan River (WA)
AW is working to improve flows and public access for the benefit of fish, wildlife, and paddlers as part of hydropower relicensing on this river.