40th Street Dentention Basin
40th Street Dentention Basin is an earth dam located in Pueblo County, Colorado, built in 1998. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About 40th Street Dentention Basin
The primary purpose of 40th Street Dentention Basin 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 Cdot Region 2 (gocha, Mark) (state). It impounds the Unnamed Trib Fountain-os near Pueblo.
The dam stands 21 feet tall and stretches 961 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 82 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1998, the structure is 28 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. 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 12/14/2018.
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Location
| State | Colorado |
| County | Pueblo |
| Nearest City | Pueblo |
| River/Stream | Unnamed Trib Fountain-os |
| Coordinates | 38.30750, -104.61140 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 961 ft |
| Year Completed | 1998 (28 years old) |
Storage & Hydraulics
| NID Storage | 82 acre-ft |
| Max Storage | 82 acre-ft |
| Normal Storage | 77 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 1,189 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | CDOT REGION 2 (GOCHA, MARK) |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 12/14/2018 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CO02817 |
| Federal ID | CO02817 |
| More Info | State Dam Safety Program |