Wyoming Dams

1,490 dams tracked by the National Inventory of Dams

Total Dams

1,490

High Hazard

100

6.7%

Poor / Unsatisfactory

576

Average Age

62 yrs

Hazard Classification

High100 (6.7%)
Significant104 (7.0%)
Low1,283 (86.1%)

Condition Assessment

Satisfactory45 (3.0%)
Fair752 (50.5%)
Poor / Unsatisfactory576 (38.7%)
Not Rated117 (7.9%)

Federal

193

State

22

Local

82

Private

1,174

Tallest Dams

Poor Condition Dams

All Dams in Wyoming

Showing 651675 of 1,490

Dam NameHeight (ft)YearHazardCondition
Indian Lake

Teton County

131954LowPoor
Innes

Campbell County

331956LowFair
Intercity Wastewater Treatment(Cell 1)

Sweetwater County

101990LowFair
Intercity Wastewater Treatment(Cell 2)

Sweetwater County

101990LowFair
Intercity Wastewater Treatment(Cell 3)

Sweetwater County

101990LowFair
Irene

Johnson County

301963LowFair
Irene

Carbon County

351953LowFair
Irene No. 2

Carbon County

301953LowPoor
Iron Mountain

Albany County

351910LowFair
Iron Mountain No. 1

Albany County

321957LowFair
Isom

Uinta County

201976LowNot Rated
Jack Creek

Carbon County

241919LowPoor
Jack Dam

Natrona County

351971LowUnsatisfactory
Jack Pot

Natrona County

451915LowPoor
Jackson Lake Dam

Teton County

841911HighNot Available
Jackson Wastewater Treatment Plant

Teton County

161980LowFair
James Lake

Albany County

401908LowPoor
James Thompson No. 1 Stock

Niobrara County

301960LowFair
Jenson

Fremont County

441979LowFair
Jepson No. 2

Johnson County

221953LowFair
Jerry Johns Reservoir No. 1

Sheridan County

251977LowPoor
Jessie

Crook County

261963LowFair
Jfw Corp 1-21 Water Storage Reservoir

Converse County

302015LowSatisfactory
J & H Ranch No. 1

Sheridan County

301959LowPoor
Jiggs

Campbell County

251957LowPoor
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Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.