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 901–925 of 1,962
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Johnnie Johnson Rio Blanco County | 28 | 1970 | Low | Unsatisfactory |
| Johnson Adams County | 12 | 1927 | Low | Fair |
| Johnson Larimer County | 8 | 1944 | Low | Not Rated |
| Johnson La Plata County | 55 | 1982 | High | Satisfactory |
| Johnson #2 La Plata County | 18 | — | Low | Not Rated |
| Johnston Jefferson County | 17 | 1974 | Significant | Satisfactory |
| Johnstown Weld County | 19 | 1925 | High | Satisfactory |
| John Townsend El Paso County | 60 | 1885 | Low | Poor |
| Jolly Ranch Arapahoe County | 20 | 1987 | Low | Fair |
| Jones Grand County | 39 | 1937 | Significant | Fair |
| Jones #1 Grand County | 27 | 1879 | Significant | Satisfactory |
| Jones #2 Grand County | 40 | 1887 | Low | Not Rated |
| Jones #3 Grand County | 16 | 1914 | Low | Satisfactory |
| Jordan #1 Teller County | 30 | 1959 | Low | Not Rated |
| J. O. Smith and Sons #1 Huerfano County | 29 | 1964 | Low | Fair |
| Julesburg #1 Logan County | 23 | 1910 | High | Unsatisfactory |
| Julesburg #1a Logan County | 18 | 1910 | High | Unsatisfactory |
| Julesburg #2 Sedgwick County | 67 | 1910 | High | Unsatisfactory |
| Julesburg #3 Sedgwick County | 43 | 1910 | High | Unsatisfactory |
| Julesburg #4 Sedgwick County | 34 | 1910 | High | Unsatisfactory |
| Jumbo Logan County | 38 | 1977 | Low | Satisfactory |
| Jumbo Mesa Creek 5 Mesa County | 19 | 1963 | Significant | Not Rated |
| Jumper Creek Mineral County | 19 | 1947 | Low | Not Rated |
| June Creek Eagle County | 70 | 1980 | Low | Not Rated |
| Juniata Mesa County | 110 | 1979 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.