Heimos Lake Dam
Heimos Lake Dam is an other dam located in Washington County, Missouri, built in 1955. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Heimos Lake Dam
The primary purpose of Heimos Lake Dam is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is private-owned. It impounds the Trib-little Indian Creek near Richwoods.
The dam stands 37 feet tall and stretches 1,350 feet across, creates a reservoir covering 35 acres, has a maximum storage capacity of 610 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1955, 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 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 02/09/2023.
At 37 feet, this dam is taller than 84% 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 | Washington |
| Nearest City | Richwoods |
| River/Stream | Trib-little Indian Creek |
| Coordinates | 38.15733, -90.81927 |
Physical Characteristics
| Dam Type | Other |
| NID Height | 37 ft |
| Dam Height | 37 ft |
| Dam Length | 1,350 ft |
| Year Completed | 1955 (71 years old) |
Storage & Hydraulics
| NID Storage | 610 acre-ft |
| Max Storage | 610 acre-ft |
| Normal Storage | 610 acre-ft |
| Surface Area | 35 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 50 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 02/09/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MO30999 |
| Federal ID | MO30999 |
| More Info | State Dam Safety Program |