Area includes a 32,000-acre Missouri River reservoir & 1,227 acres of State Recreation Area. In fall, winter and spring birding from the dam should offer views of gulls (occasional Ross’s Gull, Black-legged Kittiwake are seen here, and Bonaparte’s, Thayer’s, and Mew Gulls also can show up). Waterfowl by the tens of thousands often show up in spring and fall and can include less common species like Harlequin’s Duck, all 3 Scoter species and the Long-tailed Duck. Bald Eagles during migration and the winter season are a common sight near the lake and dam. A nature trail is present, as well as an aquarium, in the associated Lewis and Clark Recreation Area.