Lake Harding is a 5,850-acre (23.7 km2) reservoir on the Chattahoochee River.
Lake Harding is a deep lake with a depth of over 100 feet (30 m) at the dam itself.
The lake was originally built by the Columbus Power Company in 1926 to generate hydroelectric power. The lake was named after R.M. Harding, a power company official. The dam and lake were bought by Georgia Power in 1930.
Over the years, Lake Harding has become a popular recreational area with local residents from the Columbus metro area, many of whom have built lake homes along the well-developed shoreline on both the Alabama and Georgia sides of the lake.
Three major tributaries flow into the lake. On the Alabama side, Osanippa Creek rises near Cusseta in southern Chambers County and flows southeast into the northern end of the lake, while Halawakee Creek rises within the city limits of Opelika and flows east through northeastern Lee County before deepening and widening greatly prior to its junction with the lake.
On the Georgia side, Mountain Oak Creek flows out of Piedmont Lake near Whitesville in Harris County southwestward into the lake, with its mouth nearly due east of the mouth of Osanippa Creek on the Alabama side.
Lake Harding features several islands.
