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

Private

2,466

Tallest Dams

High Hazard Dams

Poor Condition Dams

Kootenai Dvlpmnt Impoundment DamPoor
West Fork Bitterroot (Painted Rocks)Poor
Newlan Creek DamPoor
HubbartPoor
Willow Creek DamPoor

All Dams in Montana

Showing 2601–2606 of 2,606

All High Hazard Significant Hazard Low Hazard Poor Fair Satisfactory

Dam Name	Height (ft)	Year	Hazard	Condition
Z Cake Rosebud County	15	1950	Low	Not Rated
Zelzo Carter County	15	1920	Low	Not Rated
Zempel Rosebud County	22	1936	Low	Not Rated
Zempel #3 Rosebud County	20	1940	Low	Not Rated
Zimmerman Retention Dam #1 Petroleum County	19	2003	Low	Not Rated
Zinger #1 Richland County	16	1960	Low	Not 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.