The dam creating the lake, North Anna Dam, is a long and high earthen embankment dam. It is wide at its top which sits at an elevation of above sea level. The dam's spillway is located in the center of its body. Normal elevation for the reservoir is . The dam's hydroelectric power plant is located on the west side of the spillway. It is supplied with water via a diameter penstock. It has a combined installed capacity of 1 MW.