Lannon Quarry, Wisconsin

Lannon Quarry is a former stone quarry that now serves as a 16-acre (6.5-hectare) lake considered a good dive site for beginners. It offers a series of flat ledges and walls to explore. No boats are allowed on the lake, but divers should be careful of fishing line. The lake is part of Menomonee Park, which is in the villages of Menomonee Falls and Lannon and totals 394 acres (158 hectares) of rolling fields, maple woods, cattail marsh and wetlands.

Divers must have a permit for their vehicle and a permit for scuba diving for the Waukesha County Park System. Divers can register at the entrance to the park when there is an attendant on duty. After entering the park, divers should drive their vehicles to the designated diving area on the west side of the quarry.

Depths to: 55 feet (18 m)
Visibility: 5-25 feet (1.5 to 7.5 m)
Aquatic life: Includes trout, bluegill, perch and crappies.
Fees: 2008 fees are $12.50 per certified diver and $5 per vehicle.
On-site amenities: Concession stand during the summer, a bike trail, campsites, picnic areas and swimming beach.

More info: A good map showing dive access and other information about the lake is available at www.waukeshacounty.gov.

Open: Sunrise to 10 p.m. Memorial Day through Labor Day.

Getting there: From Milwaukee, drive west on Interstate 94 toward Madison (about 6 miles [9.6 km]). Merge onto U.S. 45 north toward Fond Du Lac. Exit on Silver Spring Road (about 7 miles [11 km]). Turn left on Silver Spring Road and continue west to Town Line Road (about 7 miles). Turn right on Town Line Road and continue north for about 3 miles (5 km). Turn right at the Menomonee Park entrance.