R. Johnson Swt & Ec #1 is an earth dam located in Elbert County, Colorado, built in 1977. It carries a Low hazard potential classification and has a unsatisfactory condition assessment.
Dam profile
NID height · 37 ft37 ft tall and 547 ft long, taller than 83% of U.S. dams with a recorded height. 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 R. Johnson Swt & Ec #1
The primary purpose of R. Johnson Swt & Ec #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 Robert C.johnson (vira Johnson) (private). It impounds the Wolf Creek-tr near Strassburg.
The dam stands 37 feet tall and stretches 547 feet across, creates a reservoir covering 12 acres, has a maximum storage capacity of 179 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1977, the structure is 49 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. Its condition is rated unsatisfactory, indicating serious safety deficiencies exist that require immediate attention or remedial action. The most recent inspection on record was 03/05/2020.
At 37 feet, this dam is taller than 83% of dams nationwide.
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Location
| State | Colorado |
| County | Elbert |
| Nearest City | Strassburg |
| River/Stream | Wolf Creek-tr |
| Coordinates | 39.44064, -104.39582 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 37 ft |
| Dam Height | 31 ft |
| Dam Length | 547 ft |
| Year Completed | 1977 (49 years old) |
Storage & Hydraulics
| NID Storage | 179 acre-ft |
| Max Storage | 179 acre-ft |
| Normal Storage | 105 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 2,450 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Robert C.johnson (vira Johnson) |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Unsatisfactory |
| Last Inspection | 03/05/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CO00415 |
| Federal ID | CO00415 |
| More Info | State Dam Safety Program |