River basins, 1890-2003 and undated

This series contains materials collected or created by Milenski that focus primarily on water storage and delivery systems in southeastern Colorado. The series is organized into four subseries according to Milenski's filing system. The first two subseries contain materials related to the Arkansas River Basin and the Colorado River Basin. The third subseries has information about other river basins in the western United States, as well as documents from ten different Four States Irrigation Council meetings. The fourth subseries consists of materials about canals and reservoirs in southeastern Colorado, including the Catlin, Colorado, Ft. Lyon, and High Line canals, as well as John Martin, Pueblo, and Pisgah reservoirs. The first subseries is the largest.