Colorado Dams

1,962 dams tracked by the National Inventory of Dams

Total Dams

1,962

High Hazard

451

23%

Poor / Unsatisfactory

119

Average Age

84 yrs

Hazard Classification

High451 (23.0%)
Significant294 (15.0%)
Low1,217 (62.0%)

Condition Assessment

Satisfactory691 (35.2%)
Fair533 (27.2%)
Poor / Unsatisfactory119 (6.1%)
Not Rated619 (31.5%)

Federal

141

State

80

Local

416

Private

1,221

Poor Condition Dams

All Dams in Colorado

Showing 301325 of 691

Dam NameHeight (ft)YearHazardCondition
Idaho Springs

Clear Creek County

331906HighSatisfactory
Independent

Boulder County

121903LowSatisfactory
Indian Creek

Larimer County

461948HighSatisfactory
Ireland #5

Weld County

201976LowSatisfactory
Ish #3 (East Dam)

Boulder County

12SignificantSatisfactory
Ish #3 (Main Dam)

Larimer County

481905HighSatisfactory
Ivanhoe

Pitkin County

171928SignificantSatisfactory
Jackson Lake

Morgan County

391900HighSatisfactory
James Tingle

Park County

262009HighSatisfactory
Jasper

Boulder County

181988HighSatisfactory
Jefferson Lake

Park County

331951HighSatisfactory
Jerry Creek #1

Mesa County

571964HighSatisfactory
Jerry Creek #2

Mesa County

1501978HighSatisfactory
Jerry Creek Dike 1

Mesa County

401978HighSatisfactory
Joder

Boulder County

461962LowSatisfactory
Joe Blake Water Treatment Plant Forebay

Douglas County

271986SignificantSatisfactory
Joe Wright

Larimer County

1481979HighSatisfactory
J. O. Hill

Douglas County

441964SignificantSatisfactory
John Keller

Weld County

191974LowSatisfactory
Johnson

La Plata County

551982HighSatisfactory
Johnston

Jefferson County

171974SignificantSatisfactory
Johnstown

Weld County

191925HighSatisfactory
Jones #1

Grand County

271879SignificantSatisfactory
Jones #3

Grand County

161914LowSatisfactory
Jumbo

Logan County

381977LowSatisfactory
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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.