Division 3 administers all water resources of the upper Rio Grande Basin in Colorado including Compact compliance pursuant to the Rio Grande Compact of 1929 and the Costilla Creek Compact of 1944.  The Division is also responsible for exempt well permitting, compilation of diversion records, dam safety, and streamflow gauging station operation and maintenance.  The unique geology of Division 3 results in the conjunctive use of surface and ground water rights providing water for municipal, commercial, and irrigation demands.