Pleasant Hill Lake Dam is an earth dam located in Cass County, Missouri, built in 1945. It carries a High hazard potential classification.
Dam profile
NID height · 25 ft25 ft tall, taller than 50% 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 Pleasant Hill Lake Dam
The primary purpose of Pleasant Hill Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by City of Pleasant Hill (local government). It impounds the Tr-wilson Creek near Pleasant Hill.
The dam stands 25 feet tall, creates a reservoir covering 80 acres, has a maximum storage capacity of 1,070 acre-feet, and collects water from a drainage area of 3,240 square miles. Completed in 1945, the structure is well-established, with more than 75 years of service.
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 | Cass |
| Nearest City | Pleasant Hill |
| River/Stream | Tr-wilson Creek |
| Coordinates | 38.82155, -94.29729 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Year Completed | 1945 (81 years old) |
Storage & Hydraulics
| NID Storage | 1,070 acre-ft |
| Max Storage | 1,070 acre-ft |
| Normal Storage | 533 acre-ft |
| Surface Area | 80 acres |
| Drainage Area | 3,240 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | City of Pleasant Hill |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO20004 |
| Federal ID | MO20004 |
| More Info | State Dam Safety Program |