The Copperbowl Lake Subregion is the subregion of the Teekon Forest that lays in the southwest corner of Yukon Valley. It is one of the three subregion of Teekon Forest.
There is no animals on the left side or below the Copperbowl Lake [Personal Experience]. However, you might find some cervids species roaming the north side of the lake.
"This lake formed when one of the biggest alaskan glaciers withdrew from Yukon Valley, digging the basin in earth before filling it while melting. It dominates currently the south-west region of the reserve and serve as drinking points to wolves and bisons."