From The Pueblo Chieftain (Chris Woodka):
The district will enter the case as an opposer, not to stop the rules, but to make sure water under its supervision is used correctly. Under the rules, filed in Division 2 water court on Sept. 30 by State Engineer Dick Wolfe, Fryingpan-Arkansas return flows can be used as replacement water to assure compliance with the Arkansas River Compact between Colorado and Kansas. However, not all of the farmland in the Lower Arkansas Valley is in the Southeastern district, explained Bob Hamilton, engineering supervisor. The district also wants to assure winter water is correctly accounted for. Winter water is stored from Nov. 15 to March 15 in lieu of irrigation…
More Ark Valley consumptive use rules coverage here and here.