OnDemand - 250K - HYDRO - Dam - Polygon

A barrier constructed to control the flow or raise the level of water where the predominant material used in construction is concrete, brick, or stone. Coincident with a Non-earthen Shore Feature. A barrier constructed to control the flow or raise the level of water. No information on the predominant construction material. A barrier constructed to control the flow or raise the level of water where the predominant material used in construction is earth, or a combination of earth and rock.