In 1982 when Redlands was going through a major up-grade of the dam, power canal and generating plant an agreement was reached with the Federal Energy Regulatory Commission and U.S. Fish and Wildlife Service to enter into negotiations should a fish passage be considered at the diversion dam. Studies have been completed by the U.S. Fish and Wildlife Service and the Army Corp of Engineers in this matter. Redlands Water and Power Company worked with both agencies and commented as appropriate during the feasibility study. Construction started on the fish passage in the Winter of 1995 and was completed in the Spring of 1996. The fish passage was built so that the endangered fish species could navigate around Redlands Water and Power Company’s diversion dam to go upstream and spawn in hopes of a full recovery of the native fish in the Gunnison River. The fish that are listed as endangered are: Squawfish, Razorback Sucker, Bonytail Chub and the Humpback Chub.