Kirby Lake is a 740-acre man-made reservoir located on the south side of Abilene, Texas, just east of Highway 83, in the northeastern portion of Taylor County.

[4] Kirby Lake has around 740 acres (300 hectares) of surface area, a 7,620 acre-feet of capacity, and the maximum measured depth was 16 feet (4.9 meters).

[2] The City of Abilene owns Kirby Lake and uses it to supply water, irrigate crops, and provide recreation to its citizens.

[10] The current management strategies include monitoring fish populations using a variety of capture and release methods, upgrading the park aesthetically with the assistance of the City of Abilene, invasive species education, and improved ability for more surveys to be done about the ecosystem.

[11] The entire region is known for its diversity in butterflies, and the greatest variety can be found at Kirby Lake: Pipevine swallowtail, sleepy orange, Reakirt's blue, Horace's duskywing, tawny emperor, common buckeye, sachem, and others.