South Platte River Basin
The South Platte Basin (including the Republican River Basin) covers approximately 27,660 square miles (26.4 percent of the state’s area) in the northeast portion of Colorado. Major tributaries include Cache la Poudre River, Big Thompson River, and the North and South Forks of the Republican River.
1 Source: CDSS, total values derived from GIS Data for South Platte Basin
2 Source: Statewide Water Supply Initiative Fact Sheet for South Platte Basin, CWCB, 2006
- South Platte River Compact of 1923: The South Platte River Compact establishes Colorado’s and Nebraska’s rights to use water in Lodgepole Creek and the South Platte River based on the flow of the South Platte River at Julesburg, Colorado.
- Republican River Compact of 1942: The Republican River Compact establishes the rights of Colorado, Nebraska, and Kansas to water in the Republican River Basin and makes specific allocations for consumptive use from identified streams.