For those who love nature, there are hills, valleys and streams throughout the entire county, featuring many species of wildlife. Birders will find varieties of waterfowl, wading birds, song birds, and raptors in the Brookville Lake area. Typical migrations consist of Teal, Mallards, Coots, Wigeons, Golden Eye, and Canvas Backs, along with greater Canada Geese and Sandhill Cranes.

You'll also notice that Green, Great Blue, Little Blue, and Night Herons abound at Brookville. Osprey and Red Tail Hawks are also quite numerous. If you are patient you'll, very likely see a Bald Eagle around the lake. In the evening, especially in the spring, listen to hear the Barred Owl's distinctive calls.

White Tail Deer abound in this part of Indiana and numerous deer hunting opportunities, along with Wild Turkey in the same habitat, are available for archery and gun seasons.

Duck and goose hunting is also productive on the lake and its tributaries.

Fish habitat is excellent for species such as Smallmouth Bass, Crappie, and Walleye. In fact, Brookville Lake is the single source walleye stock for nearly every walleye impoundment in Indiana. Each April, IDNR biologists collect walleye eggs from mature fish at Brookville Lake. The egg collection supplies Indiana's entire Walleye Stocking Program.

Saltwater Striped Bass are also stocked at Brookville and are kept fed on large schools of shad forage fish. Other species found in the lake are Largemouth Bass, White Bass, Bluegill, Muskee and Catfish.

Rainbow Trout is stocked by the Indiana Department of Natural Resources and Brown Trout stocked by Trout Unlimited. New regulations limit brown trout minimums at 20 inches which is resulting in a much more productive resource in the brown trout catch.