Frd No 20 is an earth dam located in Butler County, Kansas, built in 1965. It carries a Low hazard potential classification.
Dam profile
NID height · 28 ft28 ft tall and 1,800 ft long, taller than 62% 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 20
The primary purpose of Frd No 20 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 Little Walnut-hickory Wjd No 18 (local government). It impounds the So Br Little Walnut River-tr near Leon.
The dam stands 28 feet tall and stretches 1,800 feet across, creates a reservoir covering 34 acres, has a maximum storage capacity of 1,790 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1965, 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. The most recent inspection on record was 09/19/1991. That was over 35 years ago.
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Location
| State | Kansas |
| County | Butler |
| Nearest City | Leon |
| River/Stream | So Br Little Walnut River-tr |
| Coordinates | 37.68984, -96.56925 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 25 ft |
| Dam Length | 1,800 ft |
| Year Completed | 1965 (61 years old) |
Storage & Hydraulics
| NID Storage | 1,790 acre-ft |
| Max Storage | 1,790 acre-ft |
| Normal Storage | 115 acre-ft |
| Surface Area | 34 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 2,700 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Little Walnut-hickory Wjd No 18 |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 09/19/1991 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | KS02101 |
| Federal ID | KS02101 |
| More Info | State Dam Safety Program |