Wisconsin Lake Finder

Decatur Lake

Decatur Lake is a 109-acre lake in Green County, Wisconsin, up to 10 feet deep, with 56 waterfront parcels on its shore. Fish include panfish, largemouth bass, smallmouth bass, northern pike and catfish. It has public land or a park on the shore.

• Size: 109 acres
• Deepest point: 10 ft
• Bottom: 99% muck
• Fish: Panfish, Largemouth bass, Smallmouth bass, Northern pike, Catfish
• Public access: public land or a park on the shore
• Boating: Full recreation: over 50 acres, so open to water-skiing and boating at speed under state law
• Drive time without traffic: Madison 45 min, Rockford 55 min, Waukesha 1 hr 35 min, Milwaukee 1 hr 45 min, Chicago 2 hr 10 min, Appleton 2 hr 25 min, Green Bay 2 hr 55 min, Eau Claire 3 hr 25 min, Twin Cities 4 hr 30 min
• Invasive species on record: Curly-Leaf Pondweed, Eurasian Water-Milfoil, Freshwater Golden Clam (Corbicula), Rusty Crayfish
• Waterfront parcels: 56 waterfront parcels

Questions about Decatur Lake

How many waterfront properties are on Decatur Lake?

56 waterfront parcels front Decatur Lake in Green County. That counts parcels on the water from county parcel maps, not homes for sale.

How big is Decatur Lake?

Decatur Lake covers 109 acres in Green County, Wisconsin.

How deep is Decatur Lake?

Decatur Lake is 10 feet deep at its deepest point.

What fish are in Decatur Lake?

The Wisconsin DNR lists panfish, largemouth bass, smallmouth bass, northern pike and catfish in Decatur Lake.

Is there public access to Decatur Lake?

Yes. Decatur Lake has public land or a park on the shore.

Can you water-ski or run a boat at speed on Decatur Lake?

Decatur Lake is over 50 acres, so Wisconsin's slow-no-wake rule for small lakes does not apply and boats may run at speed, staying slow within 100 feet of shore, docks and swimmers. No local boating ordinance that limits motorboats is on record.

How long is the drive to Decatur Lake?

By car, Decatur Lake is about 45 min from Madison, 55 min from Rockford, 1 hr 35 min from Waukesha, 2 hr 10 min from Chicago and 4 hr 30 min from the Twin Cities. Those are typical times without traffic, to the nearest road at the lake.

What is the bottom of Decatur Lake like?

The lake bottom is 99% muck, by the Wisconsin DNR's record.