The watersheds of Indecision and Volcano creeks originating on Mount Chiginagak provide the majority of water input for Mother Goose Lake.

The Mother Goose Lake watershed supports populations of Chinook Oncorhynchus tshawytscha, chum O. keta, coho O kisutch, pink O. gorbuscha, and sockeye O. nerka salmon as well as resident fish species such as Dolly Varden Salvelinus malma, and Arctic grayling Thymallus arcticus (USFWS 1994).

Fish stocks originating from the Mother Gosse Lake drainage contribute to the subsistence, sport and commercial fisheries of the area.

Painter Creek, a tributary to the King Salmon River provides the majority of sport fishing opportunity in the Mother Goose Lake drainage.

The AVO crew discovered a vegetation kill along Indecision Creek leading into Mother Goose Lake and along an unnamed drainage on the Chiginagak Bay side of the mountain.