PERTINENT DATA

GENERAL
Drainage area, square miles - 265
Pool elevations, ft. above        msl
   Maximum pool                      860
   Full pool (crest of spillway)   835
   Maximum conservation pool 832
   Minimum pool                       770.5

RESERVOIR
   Full pool, acre/feet 77,600
   Maximum conservation pool, acre-feet 72,050
   Minimum pool, acre-feet 7,090

DAM
   Type Gravel fill embankment structure
   Crest length 2,600 ft.
   Crest elevation 865.5
   Crest width 24 ft.
   Maximum height 145 ft.
   Freeboard (above maximum pool) 5.5 ft.

SPILLWAY
   Type Freeflow concrete spillway
   Crest length 200 ft.
   Crest elevation 835
   Design discharge 97,500 ft3/s

OUTLET WORKS
   Type gates 5 hydraulically operated
   Capacity at full pool 9,275 ft3/s

DATE OF COMPLETION Fall 1949

DATE RESERVOIR FIRST FILLED May 1950

DATA SOURCE
U.S. Army Corps of Engineers, Portland District