Frd No 3-7 is an earth dam located in Lyon County, Kansas, built in 1971. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 51 ft51 ft tall and 1,625 ft long, taller than 93% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.
About Frd No 3-7
The primary purpose of Frd No 3-7 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 Upper Verdigris Wjd No 24 (local government). It impounds the Rock Creek near Madison.
The dam stands 51 feet tall and stretches 1,625 feet across, creates a reservoir covering 90 acres, has a maximum storage capacity of 6,698 acre-feet, and collects water from a drainage area of 17 square miles. Completed in 1971, the structure is well into its service life at over 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 11/16/2018.
At 51 feet, this dam is taller than 93% of dams nationwide.
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Location
| State | Kansas |
| County | Lyon |
| Nearest City | Madison |
| River/Stream | Rock Creek |
| Coordinates | 38.19417, -96.23761 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 51 ft |
| Dam Height | 51 ft |
| Dam Length | 1,625 ft |
| Year Completed | 1971 (55 years old) |
Storage & Hydraulics
| NID Storage | 6,698 acre-ft |
| Max Storage | 6,698 acre-ft |
| Normal Storage | 564 acre-ft |
| Surface Area | 90 acres |
| Drainage Area | 17 sq mi |
| Max Discharge | 5,520 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Upper Verdigris Wjd No 24 |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 11/16/2018 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | KS02358 |
| Federal ID | KS02358 |
| More Info | State Dam Safety Program |