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
Tallest Dams
- Morrow Point Dam468 ft
- Ten Mile Pond #3 Dam416 ft
- Blue Mesa Dam390 ft
- Gross 350 ft
- Ridgway Dam330 ft
High Hazard Dams
- Morrow Point DamHigh
- Ten Mile Pond #3 DamHigh
- Blue Mesa DamHigh
- Gross High
- Ridgway DamHigh
Poor Condition Dams
- SanchezUnsatisfactory
- Narraguinnep - Main DamUnsatisfactory
- Stillwater #1Unsatisfactory
- MiramonteUnsatisfactory
- Spring CreekUnsatisfactory
All Dams in Colorado
Showing 1051–1075 of 1,962
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Jones #2 Grand County | 40 | 1887 | Low | Not Rated |
| Jones #1 Grand County | 27 | 1879 | Significant | Satisfactory |
| Jones Grand County | 39 | 1937 | Significant | Fair |
| Jolly Ranch Arapahoe County | 20 | 1987 | Low | Fair |
| John Townsend El Paso County | 60 | 1885 | Low | Poor |
| Johnstown Weld County | 19 | 1925 | High | Satisfactory |
| Johnston Jefferson County | 17 | 1974 | Significant | Satisfactory |
| Johnson #2 La Plata County | 18 | — | Low | Not Rated |
| Johnson Adams County | 12 | 1927 | Low | Fair |
| Johnson La Plata County | 55 | 1982 | High | Satisfactory |
| Johnson Larimer County | 8 | 1944 | Low | Not Rated |
| Johnnie Johnson Rio Blanco County | 28 | 1970 | Low | Unsatisfactory |
| John May #1 El Paso County | 25 | 1967 | Low | Not Rated |
| John Martin Dam Bent County | 25 | 1943 | High | Not Available |
| John Keller Weld County | 19 | 1974 | Low | Satisfactory |
| J. O. Hill Douglas County | 44 | 1964 | Significant | Satisfactory |
| Joe Wright Larimer County | 148 | 1979 | High | Satisfactory |
| Joe Wilson Recr. Teller County | 36 | 1964 | Low | Not Rated |
| Joe King #2 Mesa County | 35 | 2008 | Low | Fair |
| Joe Blake Water Treatment Plant Forebay Douglas County | 27 | 1986 | Significant | Satisfactory |
| Joder Boulder County | 46 | 1962 | Low | Satisfactory |
| J. M. Huerfano County | 12 | 1915 | Low | Fair |
| J. J. Huddart No. 1 Broomfield County | 25 | 1962 | Low | Not Rated |
| J.H. Holland No. 2 Pueblo County | 22 | 1949 | Low | Not Rated |
| Jewell Wetland Detention Arapahoe County | 21 | 2000 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.