Boulanger Lake Dam is an earth dam located in Warren County, Missouri, built in 1955. It carries a High hazard potential classification.
Dam profile
NID height · 33 ft33 ft tall, taller than 76% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Boulanger Lake Dam
The primary purpose of Boulanger Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Lillian Boulanger (private). It impounds the Tr Hickory Lick Creek near Old Monroe.
The dam stands 33 feet tall, creates a reservoir covering 22 acres, has a maximum storage capacity of 388 acre-feet, and collects water from a drainage area of 150 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.
At 33 feet, this dam is taller than 76% 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 | Warren |
| Nearest City | Old Monroe |
| River/Stream | Tr Hickory Lick Creek |
| Coordinates | 38.83968, -91.10500 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 33 ft |
| Dam Height | 33 ft |
| Year Completed | 1955 (71 years old) |
Storage & Hydraulics
| NID Storage | 388 acre-ft |
| Max Storage | 388 acre-ft |
| Normal Storage | 265 acre-ft |
| Surface Area | 22 acres |
| Drainage Area | 150 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | Lillian Boulanger |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO10759 |
| Federal ID | MO10759 |
| More Info | State Dam Safety Program |