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 201–225 of 1,217
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Slesinger Archuleta County | 17 | 1950 | Low | Fair |
| S. Lazy U #2 Hinsdale County | 11 | 1933 | Low | Not Rated |
| S. Lazy U Hinsdale County | 11 | 1933 | Low | Not Rated |
| Slack and Weiss Jackson County | 22 | 1890 | Low | Unsatisfactory |
| Slab Canyon Larimer County | 26 | 1937 | Low | Satisfactory |
| Skyscraper Boulder County | 24 | 1940 | Low | Fair |
| Skim Milk Delta County | 16 | 1904 | Low | Fair |
| Six Mile - Northwest Boulder County | 14 | 1892 | Low | Fair |
| Six & Fifty Detention Dam Mesa County | 20 | 1957 | Low | Not Rated |
| Simon #1 Rio Blanco County | 27 | 1917 | Low | Satisfactory |
| Silver Spruce #2 Boulder County | 18 | 1958 | Low | Satisfactory |
| Silver Lakes #2 Conejos County | 19 | 1910 | Low | Not Rated |
| Silver Dollar Clear Creek County | 35 | — | Low | Not Rated |
| Signal #2 Adams County | 12 | 1890 | Low | Satisfactory |
| Sierra Blanco #1 Huerfano County | 37 | 1906 | Low | Not Rated |
| Short La Plata County | 16 | 1940 | Low | Not Rated |
| Shirkey,Pearl Det. #1 Elbert County | 30 | 1969 | Low | Not Rated |
| Sheep Lake Delta County | 25 | 1889 | Low | Satisfactory |
| Shawver Jackson County | 20 | 1949 | Low | Fair |
| Shaw Weld County | 7 | 1908 | Low | Not Rated |
| Sharps Orchard Huerfano County | 16 | 1896 | Low | Not Rated |
| Seymour Jackson County | 25 | 1966 | Low | Not Rated |
| Seven Reverse Y #1 Weld County | 29 | 1965 | Low | Satisfactory |
| Sellers-Crowell Routt County | 18 | 1914 | Low | Fair |
| Sellers and Mcclane Montezuma County | 17 | 1944 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.