Million Reservoir
Million Reservoir is an earth dam located in Rio Grande County, Colorado, built in 1953. It carries a High hazard potential classification.
About Million Reservoir
The primary purpose of Million Reservoir is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Usda Fs (federal). It impounds the Ditch From Mill Creek near Private Property.
The dam stands 25 feet tall and stretches 290 feet across, has a maximum storage capacity of 240 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1953, the structure is well into its service life at over 50 years old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. An emergency action plan is in place for this dam. The most recent inspection on record was 06/08/2017. That was 8 years ago, which is on the longer end for a high-hazard structure.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Colorado dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Colorado |
| County | Rio Grande |
| Nearest City | Private Property |
| River/Stream | Ditch From Mill Creek |
| Coordinates | 37.62262, -106.66989 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 290 ft |
| Year Completed | 1953 (73 years old) |
Storage & Hydraulics
| NID Storage | 240 acre-ft |
| Max Storage | 240 acre-ft |
| Normal Storage | 43 acre-ft |
| Drainage Area | 3 sq mi |
| Max Discharge | 480 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | USDA FS |
| Owner Type | Federal |
| Hazard Classification | High |
| Condition Assessment | Not Rated |
| Last Inspection | 06/08/2017 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CO00776 |
| Federal ID | CO00776 |
| More Info | State Dam Safety Program |