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U.S. ARMY COPS OF ENGINEERS Howard Hanson Dam Update

U.S. ARMY COPS OF ENGINEERS Howard Hanson Dam Update. Green River Watershed. Normal Project Operations. NOV. MAR. JUN. NOV. 1206 ft. Potential flood pools of short duration. Spring ramp-up for augmentation. Summer and fall flow augmentation. 1167 ft. 1075 ft.

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U.S. ARMY COPS OF ENGINEERS Howard Hanson Dam Update

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  1. U.S. ARMY COPS OF ENGINEERS Howard Hanson Dam Update

  2. Green River Watershed

  3. Normal Project Operations NOV MAR JUN NOV 1206 ft Potential flood pools of short duration Spring ramp-up for augmentation Summer and fall flow augmentation 1167 ft 1075 ft Pool elevation in feet above sea level

  4. Landslide Debris Green River Underground Drainage Tunnel Grout Curtain Spillway Right Abutment Dam Embankment Eagle Gorge Reservoir

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