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 776–800 of 1,962
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Marston Lake - West Dike Jefferson County | 11 | 1899 | Low | Not Rated |
| Marston Lake - South Dam Denver County | 33 | 1899 | High | Satisfactory |
| Marston Lake - Northwest Dike Denver County | 18 | 1899 | High | Satisfactory |
| Marston Lake - North Dam Denver County | 30 | 1899 | High | Satisfactory |
| Marston Lake - East Dam Denver County | 17 | 1899 | High | Satisfactory |
| Marshall Lake Boulder County | 101 | 1908 | High | Satisfactory |
| Marshall #2 Weld County | 20 | 1887 | Low | Fair |
| Marshall Adams County | 26 | 1904 | Low | Satisfactory |
| Mark #1 Rio Blanco County | 22 | 1964 | Low | Fair |
| Marion Custer County | 10 | 1909 | Low | Not Rated |
| Mariano Larimer County | 30 | 1889 | High | Satisfactory |
| Maria Huerfano County | 20 | 1887 | Low | Not Rated |
| Margaret Spurgeon #1 Boulder County | 42 | 1963 | Significant | Satisfactory |
| Margaret-Carpenter Adams County | 20 | 2008 | Low | Not Rated |
| Marfell Lake No. 1 Boulder County | 12 | 1880 | Low | Not Rated |
| Marcot Park Delta County | 39 | 1956 | High | Fair |
| Marchiori Huerfano County | 26 | 1952 | Low | Fair |
| Maple Grove Jefferson County | 59 | 1956 | High | Satisfactory |
| Mann Jefferson County | 15 | 1877 | Low | Satisfactory |
| Manitou Park Lake Teller County | 29 | 1937 | Significant | Not Rated |
| Manitou El Paso County | 124 | 1971 | High | Fair |
| Main Jefferson County | 46 | 1908 | High | Satisfactory |
| Maguire Elbert County | 17 | 1925 | Low | Fair |
| Magnuson #1 Teller County | 52 | 1969 | Low | Not Rated |
| Magic Mountain #1 Jefferson County | 56 | 1958 | High | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.