The Sinlahekin Wildlife Area includes a total of about 22,840 acres in three units in central Okanogan County. Elevation ranges from 928 feet on the Driscoll Island unit to over 4,000 feet on the Sinlahekin, which comprises most of this wildlife area. The Sinlahekin is the oldest wildlife area in Washington, with the first parcels purchased in 1939 using federal Pittman-Robertson funds to preserve mule deer winter range. Fishing, hunting, camping and hiking are very popular.
75th anniversary of the Sinlahekin
Washington’s first wildlife area
Public conduct rules for WDFW Lands restrict the discharge of firearms within 500 feet of any of the 3 designated campgrounds for the Sinlahekin Unit. See locations for all 21 WDFW designated campgrounds here.
A Discover Pass or WDFW Vehicle Access Pass
is required on all WDFW lands. Learn more at DiscoverPass.wa.gov
Sinlahekin Ecosystem Restoration Project This is a report on the results from a study that reconstructed the conifer forest stand composition and structure on the Sinlahekin Creek and Sarsapkin Creek alluvial fans as they appeared in 1896 and compared to the stand composition and structure in 2009 of the same alluvial fans. Read the Report >>