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 251275 of 543

Dam NameHeight (ft)YearHazardCondition
Little Boxelder No. 3

Converse County

301955LowPoor
Little Boxelder No. 1

Converse County

541971SignificantPoor
Lion

Johnson County

311964LowPoor
Lewis

Big Horn County

191948LowPoor
Leonard Degering

Niobrara County

211979LowPoor
Leck Mayes

Big Horn County

81992LowPoor
Leavitt

Big Horn County

451956HighPoor
Leach No. 1 Stock

Niobrara County

301961LowPoor
Lazy Y No. 1

Converse County

451957LowPoor
Larry's Last Chance

Big Horn County

251965LowPoor
Lance Creek No. 2

Niobrara County

201966LowPoor
Lance Creek No. 1

Niobrara County

261965LowPoor
Lamb Lower

Natrona County

281952LowPoor
Lace

Albany County

151951LowPoor
Kruger Lake

Crook County

151937LowPoor
Kovach

Lincoln County

161988LowPoor
Knife Edge

Washakie County

32LowPoor
Kinney

Carbon County

201904LowPoor
Kingsbury Todd No. 1

Johnson County

371913SignificantPoor
Kiewit Stockade Creek No. 1

Sheridan County

451968LowPoor
Kiewit No. 1

Sheridan County

301964LowPoor
Ketelsen #9-219-2

Converse County

231987LowPoor
Ketchum Butte

Carbon County

352001LowPoor
Kennedy No. 1

Albany County

401965LowPoor
Kemmerer

Lincoln County

301942HighPoor
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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.