Lake Greenfield has a beautiful two-mile WALKING trail surrounding it for the public to enjoy. We welcome out-of-town guests, but please be considerate when using the lake. There are signs posted saying NO MOTOR VEHICLES on the walking path. In addition, no campfires/bonfires are allowed. The grills located near the picnic areas are the only places for fires/cooking. Lake Greenfield is also the drinking water source for a large area in SW Iowa. Thank you for respecting our lake and residents.