Construction began in October of 1972, with the project being placed in operation on January 21, 1980.
Congressional Authority of the construction of Laneport Lake (Granger Lake) was originally contained in the Flood Control Act approved 3 September 1954.
Maximum level reached 530.11 on 05-MAR-1992
Minimum level reached 498.45 on 19-NOV-2011
The purpose of the dam was for flood damage reduction, water conservation, fish and wildlife habitat, and general recreation.