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 601625 of 2,606

Dam NameHeight (ft)YearHazardCondition
Deianira

Chouteau County

201960LowNot Rated
Deigratia

Chouteau County

201960LowNot Rated
Deiphobus

Cascade County

101953LowNot Rated
Delaney #2

Petroleum County

201959LowNot Rated
Delmar

Liberty County

201914LowNot Rated
Deminish

Teton County

101952LowNot Rated
Demontigny

Phillips County

201954LowNot Rated
De Puydt

Phillips County

121935LowNot Rated
Desert

Valley County

201956LowNot Rated
Detergent

Lewis and Clark County

151956LowNot Rated
Deus Nachina

Chouteau County

201950LowNot Rated
Deuteronomy

Chouteau County

151972LowNot Rated
Deveny Coulee Dam

Treasure County

251950LowNot Rated
D'Ewart

Park County

101951LowNot Rated
Dewey

Sheridan County

251948LowNot Rated
Dewry

Fergus County

151960LowNot Rated
D G Orchowski #1

Big Horn County

301963LowNot Rated
D G Orchowski #2

Big Horn County

301958LowNot Rated
D Hannaland #1

McCone County

201959LowNot Rated
Diamond #1

Custer County

151958LowNot Rated
Dick Golie Wildlife Dam

Cascade County

301965LowNot Rated
Dies Irae

Chouteau County

251961LowNot Rated
Dietz Storage #13

Big Horn County

172006LowNot Rated
Dietz Storage #8

Big Horn County

252007LowNot Rated
Ding-A-Ling

Dawson County

151955LowNot Rated
PreviousPage 25 of 105Next

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