Sorry somehow I lost the original post. I do not have first hand fishing experience for Wall but according to the WDFW it received 4,030 Cut fry last year and is pending another release of 4,000 fry this year. Having hunted around the lake I could not see where natural reproduction would be possible. If you gave the BLM Spokane office a call they could probably answer your question.
My best, Don Shearer
