Martin Dam P-349

General information

Waterway  Tallapoosa River
Current status   Active license 
Type of facility Conventional Hydro
Mode of hydropower generation Peaking
Type of permit FERC License

FERC information

FERC docket # P-349
FERC project name Martin Dam
Permit issued 12/12/15
Permit expiration 11/26/45

Ownership and operation

Owner Alabama Power Co
Owner type Investor-Owned Utility
Year first online (conventional hydro) 1927
Transmission or distribution system owner Alabama Power Co

Power and generating capacity

Number of units 4
Total capacity from hydraulic turbine-generator units within each plant 210.6 MW
Average annual net hydropower generation 308,903.0 MWH

The Martin Project is located on the Tallapoosa River in Alabama in Tallapoosa, Elmore and Coosa Counties.

The Martin Dam Project includes a dam, powerhouse, impoundment, and recreation facilities, described in more detail below.

The project includes Lake Martin, an approximately 31-mile-long, 41,450-acre reservoir at the maximum full pool elevation of 491 feet mean sea level (msl). Lake Martin is formed by a 2,255-foot-long concrete gravity dam and earth dike section (Martin Dam), which includes a 720-foot-long gated spillway section with 20 vertical lift spillway gates, a 255-foot-long concrete gravity non-overflow section, an approximately 1,000-foot-long earth embankment on the left abutment, and a 280-foot-long concrete gravity intake structure with 12 intake gates fitted with trashracks. There are two, 450-foot-long transmission lines that lead from the powerhouse to the project’s switchyard; and appurtenant facilities include a low auxiliary dam that forms a stilling basin for spillway discharges, and a powerhouse access road.

Source: FERC

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