Harriman
Harriman is an earth dam located in Jefferson County, Colorado, built in 2013. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Harriman
The primary purpose of Harriman is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Denver Board Of Water Commissioners (public utility). It impounds the Weaver Creek-os near Lakewood.
The dam stands 38 feet tall and stretches 2,697 feet across, creates a reservoir covering 65 acres, and has a maximum storage capacity of 963 acre-feet. Completed in 2013, the structure is relatively new.
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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 03/09/2021.
At 38 feet, this dam is taller than 85% of dams nationwide.
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 | Jefferson |
| Nearest City | Lakewood |
| River/Stream | Weaver Creek-os |
| Coordinates | 39.63809, -105.12320 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 38 ft |
| Dam Height | 15 ft |
| Dam Length | 2,697 ft |
| Year Completed | 2013 (13 years old) |
Storage & Hydraulics
| NID Storage | 963 acre-ft |
| Max Storage | 963 acre-ft |
| Normal Storage | 762 acre-ft |
| Surface Area | 65 acres |
| Max Discharge | 736 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | DENVER BOARD OF WATER COMMISSIONERS |
| Owner Type | Public Utility |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 03/09/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CO01823 |
| Federal ID | CO01823 |
| More Info | State Dam Safety Program |