Primary Inflows: Mud Creek, Cedar Creek, and Minnehaha Creek
Primary Outflows: Crooked River
Crooked Lake, in conjunction with Pickerel, Round, and Spring Lake make up the headwaters for the Inland Waterway.
The three small communities around Crooked Lake (Conway, Oden, and Ponshewaing) are all remnants from when settlements sprung up due to the influx of tourists the Grand Rapids and Indiana railroads brought to the area.
Black Crappie, Bluegill, Brown Bullhead, Brown Trout, Green Sunfish, Lake Trout, Largemouth Bass, Muskellunge, Northern Pike, Pumpkinseed Sunfish, Rock Bass, Smallmouth Bass, Walleye, Yellow Bullhead, and Yellow Perch