Montana Dams

2,990 dams tracked by the National Inventory of Dams

Total Dams

2,990

High Hazard

188

6.3%

Poor / Unsatisfactory

132

Average Age

74 yrs

Hazard Classification

High188 (6.3%)
Significant193 (6.5%)
Low2,606 (87.2%)

Condition Assessment

Satisfactory113 (3.8%)
Fair44 (1.5%)
Poor / Unsatisfactory132 (4.4%)
Not Rated2,701 (90.3%)

Federal

278

State

151

Local

84

Private

2,466

All Dams in Montana

Showing 676700 of 2,606

Dam NameHeight (ft)YearHazardCondition
Drury

Daniels County

121950LowNot Rated
Dry Coulee Dam

Big Horn County

301974LowNot Rated
Dry Fields

Beaverhead County

201965LowNot Rated
Dry Fork Fairhaven #1

Cascade County

81947LowNot Rated
Dry Fork Fairhaven #2

Cascade County

151943LowNot Rated
Dry Hollow

Madison County

251999LowNot Rated
Ds Scott #1

Big Horn County

131935LowNot Rated
D S Scott #2

Big Horn County

151930LowNot Rated
D S Scott #3

Big Horn County

201965LowNot Rated
Dubbe Reservoir

Valley County

191937LowNot Rated
Duck Fields

Broadwater County

201960LowNot Rated
Duck/Sugrast Dam

Prairie County

20LowNot Rated
Dugout #1

Garfield County

181955LowNot Rated
Dunlap

Richland County

201960LowNot Rated
Dunning #1

Rosebud County

251961LowNot Rated
Dunning #2

Rosebud County

201961LowNot Rated
Durfee Creek Dam

Fergus County

30LowNot Rated
Durham

Madison County

101955LowNot Rated
Dutch

Fergus County

201964LowNot Rated
Dwarf

Dawson County

151961LowNot Rated
Dyan

Chouteau County

201948LowNot Rated
Dye #2

Carter County

201959LowNot Rated
Dyncan #2

Valley County

251964LowNot Rated
Eagle Eyes

Chouteau County

241946LowNot Rated
Eagle Land #1

Big Horn County

301940LowNot Rated
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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.