Deep Lake between Cumberland and Enumclaw might be one to check out. Nolte State Park is on it, but might not be open now, as it is a seasonal, day use only park. Easy walking trail goes around the lake, with fishing access readily available. It's a Discover Pass site.

Here's a link with some park pictures: http://washingtonstateparkstour.com/2013/08/22/nolte-state-park/