Dd No 6-28 Lower Dam (sedan City Lake)
Dd No 6-28 Lower Dam (sedan City Lake) is an earth dam located in Chautauqua County, Kansas, built in 1965. It carries a High hazard potential classification and has a poor condition assessment.
About Dd No 6-28 Lower Dam (sedan City Lake)
The primary purpose of Dd No 6-28 Lower Dam (sedan City Lake) 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 Sedan, City Of (local government). It impounds the Deer Creek near Sedan.
The dam stands 60 feet tall and stretches 1,585 feet across, creates a reservoir covering 75 acres, has a maximum storage capacity of 3,250 acre-feet, and collects water from a drainage area of 7 square miles. Completed in 1965, the structure is well into its service life at over 50 years old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 04/28/2023.
At 60 feet, this dam is taller than 95% of all dams in the United States.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Kansas dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Kansas |
| County | Chautauqua |
| Nearest City | Sedan |
| River/Stream | Deer Creek |
| Coordinates | 37.15007, -96.20650 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 60 ft |
| Dam Height | 50 ft |
| Dam Length | 1,585 ft |
| Year Completed | 1965 (61 years old) |
Storage & Hydraulics
| NID Storage | 3,250 acre-ft |
| Max Storage | 3,250 acre-ft |
| Normal Storage | 780 acre-ft |
| Surface Area | 75 acres |
| Drainage Area | 7 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | SEDAN, CITY OF |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Poor |
| Last Inspection | 04/28/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | KS02451 |
| Federal ID | KS02451 |
| More Info | State Dam Safety Program |