Several species of fish can be found in the park. Carp live in the Mill Pond. Longnose dace, speckled dace, and redside shiners swim in Mill Creek and Doan Creek. There are also steelhead and bull trout.
One of the goals of the Doan Creek restoration project is to provide suitable habitat for steelhead to reproduce.
Did You Know?
Great Basin Wild Rye Grass is part of the natural landscape at Whitman Mission. The name Waiilatpu, meaning place of rye grass, was used by the people to name the mission site.