Lakes Of Deerwood Number One Dam
Lakes Of Deerwood Number One Dam is an earth dam located in Jefferson County, Missouri, built in 1956. It carries a High hazard potential classification.
About Lakes Of Deerwood Number One Dam
The primary purpose of Lakes Of Deerwood Number One Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Lakes Of Deerwood (private). It impounds the Tr To Isum Creek near Cedar Hill.
The dam stands 33 feet tall and stretches 425 feet across, creates a reservoir covering 8 acres, has a maximum storage capacity of 130 acre-feet, and collects water from a drainage area of 100 square miles. Completed in 1956, 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. The most recent inspection on record was 06/01/1987. That was 38 years ago — unusually long for a high-hazard dam, which typically requires more frequent inspections.
At 33 feet, this dam is taller than 78% of dams nationwide.
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 | Jefferson |
| Nearest City | Cedar Hill |
| River/Stream | Tr To Isum Creek |
| Coordinates | 38.33902, -90.60442 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 33 ft |
| Dam Height | 33 ft |
| Dam Length | 425 ft |
| Year Completed | 1956 (70 years old) |
Storage & Hydraulics
| NID Storage | 130 acre-ft |
| Max Storage | 130 acre-ft |
| Normal Storage | 90 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 100 sq mi |
| Max Discharge | 1,922 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | LAKES OF DEERWOOD |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Not Rated |
| Last Inspection | 06/01/1987 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO30431 |
| Federal ID | MO30431 |
| More Info | State Dam Safety Program |