Dd No 18 is an earth dam located in Pottawatomie County, Kansas, built in 1999. It carries a Significant hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 38 ft38 ft tall and 700 ft long, taller than 84% 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 Dd No 18
The primary purpose of Dd No 18 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 Rock Creek Wd No 45 (local government). It impounds the Wilson Creek-tr near Flush.
The dam stands 38 feet tall and stretches 700 feet across, creates a reservoir covering 23 acres, has a maximum storage capacity of 840 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1999, the structure is 27 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 04/08/2022.
At 38 feet, this dam is taller than 84% of dams nationwide.
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Location
| State | Kansas |
| County | Pottawatomie |
| Nearest City | Flush |
| River/Stream | Wilson Creek-tr |
| Coordinates | 39.43843, -96.47426 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 38 ft |
| Dam Height | 38 ft |
| Dam Length | 700 ft |
| Year Completed | 1999 (27 years old) |
Storage & Hydraulics
| NID Storage | 840 acre-ft |
| Max Storage | 840 acre-ft |
| Normal Storage | 171 acre-ft |
| Surface Area | 23 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 1,708 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Rock Creek Wd No 45 |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 04/08/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | KS07871 |
| Federal ID | KS07871 |
| More Info | State Dam Safety Program |