E of Rock Lake, 20 mi. NNW of Glennallen, Copper River Basin. 0.4 mile long.
Local name reported in 1951 by U.S. Geological Survey (USGS). So named because it is filled with swamp grasses.
Crosswind Lake, Deep Lake, Dog Lake, Ewan Lake, Fish Lake, Game Trail Lake, Grass Lake, Horseshoe Lake, Island Lake, Middle Lake, Moose Lake, Mud Lake, Rock Lake, Round Lake, Round Lake, Twin Lakes,
Streams: