There's Capt. Eyre Lake if you want rainbows, just South of Czar. Also, there's Clear (pike, walleye, whitefish, perch), Arm (pike, perch) and Shuster (brookies), about 20 minutes east of Wainwright.
We were at clear and the walleye fishing was great. The best I have seen in my short lifetime. The bigest was about 5 lbs but most averaged 3-4 lbs. Between the 3 of us we caught atleast 60 fish in 6 hours. If you decide to go shoot me a pm and I will give you an idea where we causg them. Could even meet you down there if I'm not working as my brother has a cabin there.