Johnsonville Fossil Plant - Ash Disposal Area Perimeter Dike (island)

Significant HazardNot Available ConditionEmergency Action Plan: Yes

Location

StateTennessee
CountyHumphreys
Nearest CityNEW JOHNSONVILLE
River/StreamTENNESSEE RIVER - OFFSTREAM
Coordinates36.02300, -87.99500

Physical Characteristics

Dam TypeEarth
NID Height41 ft
Dam Height41 ft
Dam Length10,066 ft
Year Completed1968 (58 years old)

Storage & Hydraulics

NID Storage323 acre-ft
Max Storage323 acre-ft
Normal Storage228 acre-ft
Surface Area101 acres
Drainage Area0 sq mi
Max Discharge279 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeOther
OwnerTVA
Owner TypeFederal
Hazard ClassificationSignificant
Condition AssessmentNot Available
Last Inspection03/06/2025
Emergency Action PlanYes

Identifiers

NID IDTN08512
Federal IDTN08512
More InfoState Dam Safety Program

Nearby Dams

Blackburn Dam 3.6 mi Low Butterworth Dam 4.0 mi Low Cedar Lake #1 Dam 9.4 mi Low Sullins Dam 9.5 mi Significant Cedar Lake #2 Dam 9.6 mi Low Unimin Pond 1a Dam 9.8 mi Significant Settling Pond Dam 10.1 mi Low Pond 6 Dam 10.3 mi Low Tenn Silica Dam 10.5 mi Low Jackson Dam 10.8 mi Low