Frd No 6-4 is an earth dam located in Lyon County, Kansas, built in 1966. It carries a Low hazard potential classification.
Dam profile
NID height · 33 ft33 ft tall and 1,515 ft long, taller than 76% 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 Frd No 6-4
The primary purpose of Frd No 6-4 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 N Branch Verdigris River-tr near Madison.
The dam stands 33 feet tall and stretches 1,515 feet across, creates a reservoir covering 21 acres, has a maximum storage capacity of 1,506 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1966, the structure is well into its service life at over 50 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 33 feet, this dam is taller than 76% of dams nationwide.
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Location
| State | Kansas |
| County | Lyon |
| Nearest City | Madison |
| River/Stream | N Branch Verdigris River-tr |
| Coordinates | 38.17386, -96.18624 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 33 ft |
| Dam Height | 33 ft |
| Dam Length | 1,515 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 1,506 acre-ft |
| Max Storage | 1,506 acre-ft |
| Normal Storage | 138 acre-ft |
| Surface Area | 21 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 2,399 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Upper Verdigris Wjd No 24 |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | KS02362 |
| Federal ID | KS02362 |
| More Info | State Dam Safety Program |