Carnelian Bay, California

The high-altitude site on northwest Lake Tahoe is named after the semi-precious stones found along the shoreline. The carnelian stones are composed primarily of quartz, and are used to make jewelry. The dive site is shallow for about 1,000 feet (303 m) from the shoreline, and is popular for summer night diving. Underwater discoveries include a sunken barge, fishing boats, and large logs.

Depths to: Averages 20-25 feet (6-7.5 m)

Visibility: 50-60 feet (15-18 m)

Water temperature: 65 degrees Fahrenheit (19 degrees Celsius) at its peak in the summer.

Aquatic life: Rainbow trout, crawdads

Fees: None

On-site amenities: Picnic tables, barbecues, porta-potties during the summer. Nearby is a grocery store, restaurant and telephone.

More info: Visit www.visitinglaketahoe.com.

Open: Year-round

Getting there: From Interstate 80, drive south on California Highway 267. Turn right on California Highway 28 and proceed for just a few miles.