Clear Creek 22-a is an earth dam located in Saunders County, Nebraska, built in 1975. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 54 ft54 ft tall and 1,895 ft long, taller than 94% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.
About Clear Creek 22-a
The primary purpose of Clear Creek 22-a 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 Lower Platte North Natural Resources District (local government). It impounds the Johnson Creek near Ashland.
The dam stands 54 feet tall and stretches 1,895 feet across, creates a reservoir covering 77 acres, has a maximum storage capacity of 4,973 acre-feet, and collects water from a drainage area of 17 square miles. Completed in 1975, the structure is well into its service life at over 50 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. The most recent inspection on record was 09/12/2022.
At 54 feet, this dam is taller than 94% of dams nationwide.
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Location
| State | Nebraska |
| County | Saunders |
| Nearest City | Ashland |
| River/Stream | Johnson Creek |
| Coordinates | 41.17518, -96.41215 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 54 ft |
| Dam Height | 48 ft |
| Dam Length | 1,895 ft |
| Year Completed | 1975 (51 years old) |
Storage & Hydraulics
| NID Storage | 4,973 acre-ft |
| Max Storage | 4,973 acre-ft |
| Normal Storage | 487 acre-ft |
| Surface Area | 77 acres |
| Drainage Area | 17 sq mi |
| Max Discharge | 8,981 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Lower Platte North Natural Resources District |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/12/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE01532 |
| Federal ID | NE01532 |
| More Info | State Dam Safety Program |