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 701–725 of 1,962
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Granite Dam La Plata County | 31 | 1983 | Low | Fair |
| Grant B Jefferson County | 19 | 1910 | Low | Fair |
| Grass Valley Garfield County | 61 | 1892 | High | Unsatisfactory |
| Grass Valley East Dike Garfield County | 12 | 1946 | Significant | Fair |
| Gray Delta County | 41 | 1957 | Low | Not Rated |
| Gray'S Creek Chaffee County | 28 | 1948 | Low | Fair |
| Great Western Broomfield County | 83 | 1903 | High | Fair |
| Greeley Lake West Weld County | 23 | 1979 | Significant | Satisfactory |
| Green Lake Clear Creek County | 8 | 1914 | Significant | Satisfactory |
| Green Lake No. 1 Boulder County | 24 | 1940 | Low | Not Rated |
| Green Lake No. 2 Boulder County | 52 | 1938 | Low | Not Rated |
| Green Lake No. 3 Boulder County | 28 | 1907 | Low | Satisfactory |
| Greenland L&C Stockwater Douglas County | 18 | 1950 | Low | Unsatisfactory |
| Green Mountain Dam Summit County | 309 | 1943 | High | Not Available |
| Greenview Pueblo County | 8 | 1870 | Low | Not Rated |
| Greenwood Delta County | 27 | 1958 | Low | Not Rated |
| Gregor Rio Blanco County | 11 | 1911 | Low | Satisfactory |
| Griggs Grand County | 20 | 1948 | Low | Satisfactory |
| Griggs La Plata County | 13 | 1999 | Significant | Fair |
| Griggs #3 Grand County | 18 | 1952 | Low | Fair |
| Grimes Montezuma County | 36 | 1947 | Low | Not Rated |
| Grimes Brooks Routt County | 35 | 1903 | High | Fair |
| Grizzly Pitkin County | 65 | 1930 | High | Fair |
| Gross Boulder County | 350 | 1955 | High | Fair |
| Groth Pumping System Larimer County | 20 | 1951 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.