G-25 is an earth dam located in Jefferson County, Kansas, built in 2011. It carries a Low hazard potential classification.
Dam profile
NID height · 49 ft49 ft tall and 671 ft long, taller than 92% 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 G-25
The primary purpose of G-25 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 Delaware Wjd No 10 (local government). It impounds the Slough Creek near Oskaloosa.
The dam stands 49 feet tall and stretches 671 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 158 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2011, 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. The most recent inspection on record was 04/24/2009. That was over 17 years ago.
At 49 feet, this dam is taller than 92% of dams nationwide.
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Location
| State | Kansas |
| County | Jefferson |
| Nearest City | Oskaloosa |
| River/Stream | Slough Creek |
| Coordinates | 39.22514, -95.34349 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 49 ft |
| Dam Height | 38 ft |
| Dam Length | 671 ft |
| Year Completed | 2011 (15 years old) |
Storage & Hydraulics
| NID Storage | 158 acre-ft |
| Max Storage | 158 acre-ft |
| Normal Storage | 45 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Delaware Wjd No 10 |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 04/24/2009 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | KS09365 |
| Federal ID | KS09365 |
| More Info | State Dam Safety Program |