on E coast of Baranof I., at Baranof, Alex. Arch.
Named in 1895 by Lieutenant Commander Moore, U.S. Navy (USN); published in 1899 by U.S. Coast and Geodetic Survey (USC&GS) on Chart 8050. So named because "at the head of the bay is a waterfall***and near the waterfall there are several warm mineral springs." (U.S. Coast and Geodetic Survey, 1943, p. 332).
The Basin, Cascade Bay, Cosmos Cove, Ell Cove, Kasnyku Bay, Kelp Bay, Nelson Bay, South Arm Kelp Bay, Surprise Harbor, Takatz Bay, Warm Spring Bay, Warm Springs Bay, Waterfall Cove, Whitewater Bay, Wilson Cove,