Lake Keomah State Park in Mahaska County, Iowa, centers on an 83-acre reservoir created by Civilian Conservation Corps Company 776 after work began in 1933. Regarded as Iowa’s first man-made lake, it was dedicated in 1934, expanded from 254 acres to 366 acres by 1942, and developed with a beach, lodge, park buildings, and erosion-control structures. Its name combines Keokuk and Mahaska, the counties that financed it. Much of the park still reflects New Deal-era construction, and in 1990 the Bathhouse-Lodge Area and Erosion Control Area were placed on the National Register of Historic Places for their preserved CCC work and rustic stone design.