Dierberg Lake Dam
Dierberg Lake Dam is an earth dam located in St. Louis County, Missouri, built in 1982. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Dierberg Lake Dam
The primary purpose of Dierberg Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Robert Dierberg (private). It impounds the Tr Caulks Creek near Chesterfield.
The dam stands 68 feet tall and stretches 370 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 60 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1982, the structure is 44 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 01/18/2023.
At 68 feet, this dam is taller than 96% 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 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 | St. Louis |
| Nearest City | Chesterfield |
| River/Stream | Tr Caulks Creek |
| Coordinates | 38.63891, -90.60528 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 68 ft |
| Dam Height | 68 ft |
| Dam Length | 370 ft |
| Year Completed | 1982 (44 years old) |
Storage & Hydraulics
| NID Storage | 60 acre-ft |
| Max Storage | 60 acre-ft |
| Normal Storage | 59 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 127 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | ROBERT DIERBERG |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 01/18/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MO31840 |
| Federal ID | MO31840 |
| More Info | State Dam Safety Program |