South Platte River Basin


The South Platte Basin Roundtable covers approximately 22,000 square miles in northeast Colorado. The largest cities in the roundtable area are Boulder, Fort Collins, Longmont and Greeley. The projected population in 2050 is estimated to almost double in size to between 1.9 and 2.6 million people.

Nearly two-thirds of the increase in the state gross municipal and industrial (M&I) demand by 2030 – or approximately 324,000 acre feet (AF) to 467,000 AF with passive conservation included – will be in the overall South Platte Basin (a combination of the South Platte Basin Roundtable and the Metro Roundtable areas). 


All Coloradans are encouraged to participate in the basin roundtable process. Contact your basin roundtable for ways to get involved. 

The South Platte Basin and Metro Roundtables collaborated to produce a combined Basin Implementation Plan.

Basin Implementation Plan (BIP) Documents:

Other information: