Goguac Lake is a 352-acre lake located in Battle Creek, Michigan, with a maximum depth of 66 feet. The lake offers two main access points: a DNR boat launch on the north side with 33 parking spaces and hard-surfaced ramp, and Willard Beach, a public park on the eastern shoreline. A recreation passport is required to use the DNR launch site.

The lake features three islands - Ward's Island, Peach Island, and what was historically known as Picnic Island - adding interest to paddling routes. Vegetation is generally sparse but includes patches of water lilies, native milfoil, pondweeds, and other aquatic plants. The shoreline is heavily developed, with 79% being seawall or riprap, though some natural wetland areas remain on the southwest side.

Summer brings significant powerboat traffic, as this is a popular all-sports lake. Powered watercraft must travel counterclockwise, and there is a 40 mph speed limit. Paddlers should be particularly mindful during peak boating hours between Memorial Day and Labor Day. The lake can become quite congested, especially on summer weekends.

Water clarity is good, with Secchi depth readings of 10 feet recorded. By late summer, surface temperatures reach the mid-70s Fahrenheit, with cooler layers below the thermocline at 21 feet. The lake has no natural outlets, and water levels fluctuate seasonally.

Wildlife viewing opportunities include various bird species, particularly around the remaining natural shorelines and wetland complex. Fish species include northern pike, largemouth bass, black crappie, and bluegill. The southwest wetlands provide important habitat for local wildlife.

Facilities at Willard Beach include parking and basic amenities, with admission fees of $2 per person or $5 for vehicles with three or more passengers. The beach closes at 8:30 PM. Swimming is not permitted at the DNR launch site, though fishing from the dock is allowed.