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SUMMARY the endangered bald eagle; and restoration of areas disturbed during construction. y(~~ ~~ Alternative C Alternative C, like alternative B, would divert water from the South Canal and AB Lateral into a penstock that would convey water to the powerplant near Montrose. To increase water supplies for hydropower production, alternative C includes enlarging the Gunnison Tunnel from its present capacity of 1,135 ft'/s to 1,300 ft'/s. However, the penstock and turbine capacity would still be limited to 1,135 ft'/s. Other features and operational and environmental considerations are similar to alternative B. Alternative E The physical features of alternative E are similar to alternative B. The penstock and powerplant would be designed to a maximum capacity of 950 ft'/s, rather than 1,135 ft'/s. The penstock and enlarged AB Lateral would be scaled down from alternative B. Other features and operational and environmental considerations are similar to alternative B. Alternative F The location, dimensions, and physical features of alternativeF would be the same as alternative B, including the powerplant flow capacity of 1,135 ft'/s. This alternative would reduce diversions from the Gunnison River during periods of ice buildup and would deliver additional water to the Uncompahgre River upstream from Montrose during the summer. Summary of Existing Environment and Environmental Consequences General The Uncompahgre Valley lies along the western flank of the Rocky Mountains with elevations ranging from 4,950 feet above sea level near Delta to 6,500 feet near Montrose. The Gunnison River flows east of the valley through the Black Canyon of the Gunnison Nati0nal Monument and the Gunnison Gorge Recreation Area. The climate is typified by low precipitation and a wide range of daily and average annual temperatures. Native vegetation S - 3