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 5175 of 1,490

Dam NameHeight (ft)YearHazardCondition
Wildcat No. 1

Niobrara County

401953LowFair
Widener

Sheridan County

251997LowPoor
Wiant Dam No. 2

Carbon County

101953LowPoor
Wiant Dam No. 1

Carbon County

191953LowPoor
White No. 2

Campbell County

141961LowPoor
White

Carbon County

311971LowFair
White

Big Horn County

201914LowPoor
Whistle Creek Dam

Park County

282003LowNot Rated
Wheaton No. 1

Converse County

261969LowSatisfactory
Wheatland Waste Water Lagoon 2

Platte County

182009LowFair
Wheatland Wastewater Lagoon 1

Platte County

202009LowFair
Wheatland No. 3

Albany County

281964LowPoor
Wheatland No. 2

Albany County

371901SignificantFair
Whalen Diversion Dam

Goshen County

351909LowNot Available
Wetlands No. 6

Big Horn County

91993LowFair
West Side No. 4

Converse County

231946LowFair
West Side No. 1

Converse County

201967LowPoor
Westside

Campbell County

232012HighFair
Weston

Sheridan County

181913SignificantPoor
West Fork Sand Coulee Dam

Park County

212003LowUnsatisfactory
Western Gas Resources No. 8

Johnson County

502004LowFair
West Antelope 58-80-27-05

Sheridan County

272006LowFair
West

Johnson County

311962LowFair
West

Converse County

401950LowPoor
West

Crook County

151958LowPoor
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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.