Charles Wilson Detention Dam #1 is an earth dam located in Weld County, Colorado, built in 1964. It carries a Low hazard potential classification.
Dam profile
NID height · 23 ft23 ft tall and 401 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Charles Wilson Detention Dam #1
The primary purpose of Charles Wilson Detention Dam #1 is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Front Range Investment Holding (private). It impounds the Little Thompson-tr near Milliken.
The dam stands 23 feet tall and stretches 401 feet across, creates a reservoir covering 2 acres, and has a maximum storage capacity of 55 acre-feet. Completed in 1964, the structure is well into its service life at over 50 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. The most recent inspection on record was 05/28/2021.
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Location
| State | Colorado |
| County | Weld |
| Nearest City | Milliken |
| River/Stream | Little Thompson-tr |
| Coordinates | 40.29557, -104.96641 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 23 ft |
| Dam Height | 18 ft |
| Dam Length | 401 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 55 acre-ft |
| Max Storage | 55 acre-ft |
| Normal Storage | 10 acre-ft |
| Surface Area | 2 acres |
| Max Discharge | 1,175 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Front Range Investment Holding |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 05/28/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CO02362 |
| Federal ID | CO02362 |
| More Info | State Dam Safety Program |