Dd No 9 is an earth dam located in Wilson County, Kansas, built in 1972. It carries a Low hazard potential classification.
Dam profile
NID height · 35 ft35 ft tall and 840 ft long, taller than 80% 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 Cedar Creek Wjd No 56 (local government). It impounds the Big Cedar Creek-tr near Altoona.
The dam stands 35 feet tall and stretches 840 feet across, creates a reservoir covering 11 acres, has a maximum storage capacity of 445 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1972, the structure is well into its service life at over 50 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.
At 35 feet, this dam is taller than 80% of dams nationwide.
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Location
| State | Kansas |
| County | Wilson |
| Nearest City | Altoona |
| River/Stream | Big Cedar Creek-tr |
| Coordinates | 37.61798, -95.55454 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 35 ft |
| Dam Length | 840 ft |
| Year Completed | 1972 (54 years old) |
Storage & Hydraulics
| NID Storage | 445 acre-ft |
| Max Storage | 445 acre-ft |
| Normal Storage | 52 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 1 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Cedar Creek Wjd No 56 |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | KS02425 |
| Federal ID | KS02425 |
| More Info | State Dam Safety Program |