Local Water Districts
- Southeastern Colorado Water Conservancy District (SECWCD)
- Lower Arkansas Valley Water Conservancy District (LAVWCD)
- Purgatoire River Water Conservancy District (PRWCD)
- Southwest Kansas Groundwater Management District #3 (GMD3)
State Agencies
Federal Agencies
- Army Corps of Engineers, Albuquerque District
- United States Bureau of Reclamation (USBR)
- United States Geologic Survey (USGS)
- Fountain Creek at Pueblo, CO
- John Martin Reservoir at Caddoa, CO
- Ark River near Avondale, CO
- Ark River at Las Animas, CO
- Purgatoire River near Las Animas, CO
- Ark River below John Martin Reservoir, CO
- Ark River at Lamar, CO
- Ark River near Granada, CO
- Trinidad Lake near Trinidad, CO
- Frontier Ditch near Coolidge, KS
- Ark River near Coolidge, KS
- Ark River at Garden City, KS