Dd No 7-11 is a rockfill dam located in Coffey County, Kansas, built in 1999. It carries a Low hazard potential classification.
Dam profile
NID height · 28 ft28 ft tall and 1,050 ft long, taller than 62% 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 rockfill embankment section and the water level is illustrative.
About Dd No 7-11
The primary purpose of Dd No 7-11 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 Long-scott Creeks Wd No 93 (local government). It impounds the Long Creek-tr.
The dam stands 28 feet tall and stretches 1,050 feet across, creates a reservoir covering 20 acres, has a maximum storage capacity of 752 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 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.
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Location
| State | Kansas |
| County | Coffey |
| River/Stream | Long Creek-tr |
| Coordinates | 38.32518, -95.61130 |
Physical Characteristics
| Dam Type | Rockfill |
| NID Height | 28 ft |
| Dam Height | 28 ft |
| Dam Length | 1,050 ft |
| Year Completed | 1999 (27 years old) |
Storage & Hydraulics
| NID Storage | 752 acre-ft |
| Max Storage | 752 acre-ft |
| Normal Storage | 106 acre-ft |
| Surface Area | 20 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 2,684 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Long-scott Creeks Wd No 93 |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | KS07869 |
| Federal ID | KS07869 |
| More Info | State Dam Safety Program |