Dd No 1-7 (matthias) is an earth dam located in Atchison County, Kansas, built in 1980. It carries a Low hazard potential classification.
Dam profile
NID height · 27 ft27 ft tall and 550 ft long, taller than 59% 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 1-7 (matthias)
The primary purpose of Dd No 1-7 (matthias) 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 Nemaha-brown Wjd No 7 (local government). It impounds the Walnut Creek-tr near Muscotah.
The dam stands 27 feet tall and stretches 550 feet across, creates a reservoir covering 7 acres, and has a maximum storage capacity of 142 acre-feet. Completed in 1980, the structure is 46 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 | Atchison |
| Nearest City | Muscotah |
| River/Stream | Walnut Creek-tr |
| Coordinates | 39.62468, -95.55861 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 27 ft |
| Dam Length | 550 ft |
| Year Completed | 1980 (46 years old) |
Storage & Hydraulics
| NID Storage | 142 acre-ft |
| Max Storage | 142 acre-ft |
| Normal Storage | 44 acre-ft |
| Surface Area | 7 acres |
| Max Discharge | 298 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Nemaha-brown Wjd No 7 |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | KS04224 |
| Federal ID | KS04224 |
| More Info | State Dam Safety Program |