Duce Lake Dam
Duce Lake Dam is an earth dam located in DeKalb County, Missouri, built in 1967. It carries a High hazard potential classification.
About Duce Lake Dam
The primary purpose of Duce Lake Dam is debris control. The dam is designed to catch sediment, rocks, and debris carried by flowing water — particularly important in areas prone to mudslides or heavy erosion. The dam is owned by Clarence Duce (private). It impounds the Tr-grindstone Creek near Santa Rosa.
The dam stands 23 feet tall, creates a reservoir covering 13 acres, has a maximum storage capacity of 160 acre-feet, and collects water from a drainage area of 130 square miles. Completed in 1967, 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.
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 Missouri 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 | Missouri |
| County | DeKalb |
| Nearest City | Santa Rosa |
| River/Stream | Tr-grindstone Creek |
| Coordinates | 39.84546, -94.31644 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 23 ft |
| Dam Height | 23 ft |
| Year Completed | 1967 (59 years old) |
Storage & Hydraulics
| NID Storage | 160 acre-ft |
| Max Storage | 160 acre-ft |
| Normal Storage | 78 acre-ft |
| Surface Area | 13 acres |
| Drainage Area | 130 sq mi |
Ownership & Safety
| Purpose | Debris Control |
| Owner | CLARENCE DUCE |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO10322 |
| Federal ID | MO10322 |
| More Info | State Dam Safety Program |