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INTRODUCTION The Recovery Implementation Program for the Endangered Fishes of the Upper Colorado River Basin (Recovery Program) was established in 1988 with a cooperative agreement to recover and delist endangered fishes while providing the potential for existing and new water development to proceed in the Upper Basin (USFWS 1987; Hamill 1993). The four endangered fishes; humpback chub (Gila cypha), bony tail (Gila elegans), Colorado pikeminnow (Ptychocheilus lucius), and razorback sucker (Xyrauchen texanus); will be considered recovered once self- sustaining populations and habitat are established. The process of recovery within the Upper Basin is guided by a management plan known as the Recovery Implementation Program, Recovery Action Plan (RIPRAP, USFWS 1995). The RIPRAP outlines actions necessary to achieve recovery of the endangered fishes based on the best available biological information and the recovery goals for each species. It guides future planning, research, and recovery efforts including the annual work plan and budgeting. Annual review allows modification of the plan as knowledge increases about the fish or the ecosystem, as priorities change, or as states develop their entitlement. The RIPRAP applies recovery actions to each of seven sub-basins of the Upper Colorado River Basin, including the Green, Yampa and Little Snake, Duchesne, White, Colorado, Gunnison, and Dolores rivers. The Little Snake River is the largest tributary of the Yampa River which has been identified as a river of high priority for recovery of endangered fishes in the Upper Basin. This document is a Management Action Plan (MAP) for the Little Snake River sub-basin. The plan will follow the guidelines and format of the RIPRAP to direct recovery of endangered fishes in the Little Snake River in Colorado and Wyoming and in the context of basin-wide recovery actions. The goal of the MAP is to develop a plan that defines