Black Hawk Lake is a natural glacially-formed lake measuring 957 acres (3.87 km2) in area in Sac County, Iowa, at the eastern edge of the city of Lake View, Iowa in Viola and Wall Lake Townships.

57" to Indian Creek, a tributary of the North Raccoon River.

There is a boat ramp and campgrounds and easy access for fishing.

The park and lake are the northern end of the Sauk Rail Trail, a trail using an abandoned rail right of way, terminating in the south at Swan Lake.

There are plans to establish a hiking and bicycle trail through publicly owned areas surrounding the lake.