Arkansas River Compact (1948)

+ This compact between the States of Colorado and Kansas, with the consent of the United States Congress, provides operating criteria for the John Martin Reservoir constructed by the Corps of Engineers in 1943.

+ During the winter storage season (November 1 - March 31) Colorado may demand releases of water equivalent to the river flow but not to exceed 100 cubic feet per second.

+ During the summer storage season (April 1 - October 31) Colorado may demand releases of water equivalent to the river flow up to 500 cubic feet per second. Kansas may demand releases of water equivalent to the portion of the river flow between 500 and 750 cubic feet per second.

+ During the summer storage season, water being held in storage may be released upon demand by both states concurrently or separately in amounts dependent upon the magnitude of the storage. With concurrent demand, Colorado is entitled to 60 percent of the release and Kansas 40 percent.

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