Projects & Facilities About The Database Programs & Activities
of the Interior The San Luis Valley Project is in the south-
central portion of Colorado. The authorized project includes the
Conejos Division, which regulates the water supply for 80,600
acres of land irrigated in the Conejos Water Conservancy
District, and the Closed Basin Division, which will salvage
shallow ground water now being lost to evapotranspiration in the
Closed Basin of San Luis Valley. The water will be delivered to
the Rio Grande for beneficial use in accordance with the Rio
Grande Compact among the States of Colorado, New Mexico, and
Texas, and the Treaty of 1906 with the Republic of Mexico. A
small amount of water will be made available to the Alamosa
National Wildlife Refuge. The Conejos Division included the
construction of Platoro Dam and Reservoir, which was completed
in 1951. The Closed Basin Division is now under construction.
Return to top Platoro Dam stores floodwaters of the Conejos
River, a tributary of the Rio Grande, fo