Brown Lake Dam
Brown Lake Dam is an earth dam located in Franklin County, Missouri, built in 1982. It carries a High hazard potential classification.
About Brown Lake Dam
Brown Lake Dam is a dam in Franklin, Missouri. The dam is owned by Brown Quarries (private). It impounds the Trib. Of St. John's Creek near Washington.
The dam stands 30 feet tall, creates a reservoir covering 17 acres, has a maximum storage capacity of 273 acre-feet, and collects water from a drainage area of 175 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.
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 | Franklin |
| Nearest City | Washington |
| River/Stream | Trib. Of St. John's Creek |
| Coordinates | 38.53777, -91.04771 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Year Completed | 1982 (44 years old) |
Storage & Hydraulics
| NID Storage | 273 acre-ft |
| Max Storage | 273 acre-ft |
| Normal Storage | 170 acre-ft |
| Surface Area | 17 acres |
| Drainage Area | 175 sq mi |
Ownership & Safety
| Owner | BROWN QUARRIES |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO31850 |
| Federal ID | MO31850 |
| More Info | State Dam Safety Program |