More permanent diversions were built by the Spanish in New Mexico to feed acequias, or shared irrigation canals.
Several major projects have undertaken construction of dams and diversion in the Rio Grande basin.
[1] The San Juan–Chama Project brings water to the Rio Grande basin from the Colorado River Basin, building the Heron Dam to store some of the water, with an expansion of the El Vado Dam storing some of the remainder.
The Closed Basin Project extracts groundwater from the San Luis Valley and delivers it into the Rio Grande.
The Pecos River is the largest tributary of the Rio Grande, and several dams have been built along it.