Area 130 acres. There are primitive camping facilities. A great variety of migrant species are attracted to this lake, including such rarities as Sabine’s and black-headed gulls, and Townsend’s warbler. Just a mile south of Walgren Lake is a black-tailed prairie dog town with nesting burrowing owls and occasional chestnut-collared longspurs. The latter are more common along the first road going east to the north of the colony.