7x7-
You are correct for most of the state however there are several streams were it is legal to fish for and even keep char in the state. On the West side of the Cascades you are allowed 2 a day over 20 inches on the Skagit and Snohomish river systems. I believe there are couple streams on the east side but since I don't fish there much I'm not sure which.

When bull trout were listed the fisheries on the Skagit and Snohomsih were in place and are allowed to continue by USFWS (WDFW had determined that those populations were healthy). The populations in both basin continue to increase (since the 20 inch minimum size limit) with more than a 5 fold increase in spawners in the last decade.

Tight lines
Smalma