Dd No 21 is an earth dam located in Greenwood County, Kansas, built in 1986. It carries a Low hazard potential classification.
Dam profile
NID height · 21 ft21 ft tall and 1,100 ft long. 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 21
The primary purpose of Dd No 21 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). It impounds the Homer Creek-tr near Neal.
The dam stands 21 feet tall and stretches 1,100 feet across, creates a reservoir covering 8 acres, has a maximum storage capacity of 263 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1986, the structure is 40 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 | Greenwood |
| Nearest City | Neal |
| River/Stream | Homer Creek-tr |
| Coordinates | 37.90880, -96.21667 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 1,100 ft |
| Year Completed | 1986 (40 years old) |
Storage & Hydraulics
| NID Storage | 263 acre-ft |
| Max Storage | 263 acre-ft |
| Normal Storage | 31 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 800 cfs |
| 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 | KS07209 |
| Federal ID | KS07209 |
| More Info | State Dam Safety Program |