Dd No 40 is an earth dam located in Greenwood County, Kansas, built in 1978. It carries a Low hazard potential classification.
Dam profile
NID height · 36 ft36 ft tall, taller than 82% 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 40
The primary purpose of Dd No 40 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 Walnut-west Creeks Wd No 72 (local government).
The dam stands 36 feet tall, creates a reservoir covering 11 acres, has a maximum storage capacity of 513 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1978, the structure is 48 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 36 feet, this dam is taller than 82% of dams nationwide.
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Location
| State | Kansas |
| County | Greenwood |
| Coordinates | 38.06484, -96.17425 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 36 ft |
| Dam Height | 36 ft |
| Year Completed | 1978 (48 years old) |
Storage & Hydraulics
| NID Storage | 513 acre-ft |
| Max Storage | 513 acre-ft |
| Normal Storage | 65 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 1 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Walnut-west Creeks Wd No 72 |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | KS09511 |
| Federal ID | KS09511 |
| More Info | State Dam Safety Program |