Three Waters Reserve is a mission-driven event center and nature reserve offering private venue rentals, nature-based educational programming and public trails. Owned by a charitable land trust, proceeds from TWR venue rentals support conservation efforts on the property and in the Sugar River watershed.  

Home to the Decatur Lake Golf Course for nearly a century, the event center now sits on 71 acres of protected lands restored to their wild landscapes and managed by our owner, Southern Wisconsin Land Conservancy (501-c3).

Three Waters Reserve serves as headquarters for Southern Wisconsin Land Conservancy, the Lower Sugar River Field Station, the Lower Sugar River Watershed Association and the Applied Ecological Institute, making it an important hub for watershed research and education.

Three Waters Reserve welcomes up to 80 guests for indoor events and up to 150 guests for outdoor events. We offer attentive event coordination, in-house catering and a full-service bar. Venue rentals include access to the upper floor of our venue, AV equipment, wrap-around deck and private access to 70-acres of nature reserve. Nearby cities of Madison (45 min) and Monroe (20 min) offer plentiful options for lodging and transportation.