Dd No E-28 (big-6) is an earth dam located in Jefferson County, Kansas, built in 1977. It carries a Low hazard potential classification.
Dam profile
NID height · 29 ft29 ft tall and 1,040 ft long, taller than 65% 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 E-28 (big-6)
The primary purpose of Dd No E-28 (big-6) 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 Johannes Creek-tr near Valley Falls.
The dam stands 29 feet tall and stretches 1,040 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 176 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1977, the structure is 49 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 | Jefferson |
| Nearest City | Valley Falls |
| River/Stream | Johannes Creek-tr |
| Coordinates | 39.40248, -95.35693 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 29 ft |
| Dam Height | 29 ft |
| Dam Length | 1,040 ft |
| Year Completed | 1977 (49 years old) |
Storage & Hydraulics
| NID Storage | 176 acre-ft |
| Max Storage | 176 acre-ft |
| Normal Storage | 31 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 801 cfs |
| 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 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | KS03984 |
| Federal ID | KS03984 |
| More Info | State Dam Safety Program |