aerial photograph of the Oahe Lake shoreline with Oahe Dam in the background, Pierre, South Dakota

aerial photograph of the Oahe Lake shoreline with Oahe Dam in the background, Pierre, South Dakota; Lake Oahe is the fourth-largest man-made reservoir in the United States
aerial photograph of the Oahe Lake shoreline with Oahe Dam in the background, Pierre, South Dakota; Lake Oahe is the fourth-largest man-made reservoir in the United States