Yonah Dam (Lake Yonah)

Field Descriptions

Dam Name: Yonah
NID ID: GA00851
Longitude: -83.3425
Latitude: 34.6814
County: STEPHENS
River: TUGALO RIVER
State: GA
Nearest City: TALLULAH FALLS
Distance: 7.00 miles
Owner Name: GEORGIA POWER COMPANY
Owner Type: Public Utility
Private Dam? No
Dam Type: Gravity
Core: Homogeneous Dam (Position)
Concrete (Type)
Known (Certainty)
Foundation: RK
Purposes: Hydroelectric
Year Completed: 1925
Year Modified/Mod Type: 1989S
Dam Length: 980 feet
Dam Height: 90 feet
Structural Height: 90 feet
Hydraulic Height: 92 feet
Maximum Discharge: 106000 cu ft/sec
Maximum Storage: 10200 acre-feet
Normal Storage: 10200 acre-feet
Surface Area: 325 acres
Drainage Area: 470 square miles
Hazard Potential: High
Emergency Action Plan? Yes
Inspection Date: 2012-05-09
Inspection Frequency: 1
State Regulated Dam? No
Spillway Type: Uncontrolled
Spillway Width: 450 feet
Federal Regulatory Agency:
Federal Inspection Agency:
Source Agency:

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