Dd No 3 (jamison) is a dam located in Greenwood County, Kansas, built in 2023. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 32 ft32 ft tall and 1,820 ft long, taller than 74% 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 3 (jamison)
The primary purpose of Dd No 3 (jamison) 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 Big Creek Wjd No 48 (local government). It impounds the North Big Creek-tr near Leroy.
The dam stands 32 feet tall and stretches 1,820 feet across, creates a reservoir covering 11 acres, and has a maximum storage capacity of 285 acre-feet. Completed in 2023, 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. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat.
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Location
| State | Kansas |
| County | Greenwood |
| Nearest City | Leroy |
| River/Stream | North Big Creek-tr |
| Coordinates | 38.15473, -95.98765 |
Physical Characteristics
| NID Height | 32 ft |
| Dam Height | 32 ft |
| Dam Length | 1,820 ft |
| Year Completed | 2023 (3 years old) |
Storage & Hydraulics
| NID Storage | 285 acre-ft |
| Max Storage | 285 acre-ft |
| Normal Storage | 33 acre-ft |
| Surface Area | 11 acres |
| Max Discharge | 903 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Big Creek Wjd No 48 |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | KS04758 |
| Federal ID | KS04758 |
| More Info | State Dam Safety Program |