Dd No 9 is an earth dam located in Wabaunsee County, Kansas, built in 2001. It carries a Low hazard potential classification.
Dam profile
NID height · 40 ft40 ft tall and 680 ft long, taller than 86% 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 9
The primary purpose of Dd No 9 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 Mill Creek Wjd No 85 (local government). It impounds the East Branch Mill Creek near Hessdale.
The dam stands 40 feet tall and stretches 680 feet across, creates a reservoir covering 13 acres, has a maximum storage capacity of 639 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 2001, the structure is relatively new.
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. The most recent inspection on record was 03/27/2001. That was over 25 years ago.
At 40 feet, this dam is taller than 86% of dams nationwide.
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Location
| State | Kansas |
| County | Wabaunsee |
| Nearest City | Hessdale |
| River/Stream | East Branch Mill Creek |
| Coordinates | 38.88972, -96.14881 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 40 ft |
| Dam Height | 40 ft |
| Dam Length | 680 ft |
| Year Completed | 2001 (25 years old) |
Storage & Hydraulics
| NID Storage | 639 acre-ft |
| Max Storage | 639 acre-ft |
| Normal Storage | 89 acre-ft |
| Surface Area | 13 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 6,517 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Mill Creek Wjd No 85 |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 03/27/2001 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | KS07915 |
| Federal ID | KS07915 |
| More Info | State Dam Safety Program |