Grays Lake is a kettle lake located in the Village of Grayslake in Lake County, Illinois. Local regulations Motorized watercraft are generally not allowed on the lake. Largemouth bass must be 15 inches long or longer to keep while northern pike must be 24 inches long or longer to keep. 2 line limit Statistics Grays Lake contains approximately 112 million gallons of water covering approximately . Water depth is approximately at its deepest point and averages 4 feet deep. The lake is nearly wide and long with about of lake shore. Watershed Grays Lake lies at the top of and drains into the Mill Creek, watershed. The Mill Creek watershed lies in the Des Plaines River watershed, which lies in the Illinois River watershed, which lies in the Mississippi River watershed, which drains into the Gulf of Mexico and eventually into the Atlantic Ocean. Fauna Fish Largemouth bass, crappie, northern pike, yellow perch, sunfish, carp and catfish. Mammals Fox, coyote, gray squirrel, chipmunk, raccoon, bat Amphibians Frog Birds Turkey vulture, American robin, American goldfinch, blue heron, mallard duck, swan, dark-eyed junco, red-tailed hawk Reptiles Common snapping turtle Flora Pickerel rush Jones Island At the west end of the lake is a peninsula called Jones Island. This area, previously a marsh, was filled in to improve recreational opportunities. References External links Grays Lake Information Website Lake County Lakes Management Information Lake County Illinois Mapping Lakes of Lake County, Illinois Grayslake, Illinois Lakes of Illinois Kettle lakes in the United States