At full capacity, it has 50 miles (80 km) of shoreline, a surface area of more than 2,700 acres (11 km2),[3] and holds 381,000 acre-feet (470,000,000 m3) of water.

[3] Notable features include the Milt Brandt Visitor Center, the adjacent Congressman Don Clausen Fish Hatchery, and the Warm Springs Recreation Area below the dam.

In addition, there were eight known gathering spaces where, for more than a hundred years, special plants were collected by Pomo people for traditional use.

The California Office of Environmental Health Hazard Assessment (OEHHA) has developed a safe eating advisory for Lake Sonoma based on levels of mercury found in fish caught from this water body.

The campground is located on a ridgeline overlooking Lake Sonoma, each campsite includes a firepit, picnic table and tent area, with primitive facilities and no potable water.