Legacy Dam
Legacy Dam is a dam located in Jackson County, Missouri, built in 2001. It carries a High hazard potential classification.
About Legacy Dam
The primary purpose of Legacy Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is private-owned. It impounds the Little Blue near Lee's Summit.
The dam stands 31 feet tall and stretches 400 feet across, creates a reservoir covering 28 acres, has a maximum storage capacity of 400 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 2001, the structure is relatively new.
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 | Jackson |
| Nearest City | Lee's Summit |
| River/Stream | Little Blue |
| Coordinates | 38.92828, -94.31717 |
Physical Characteristics
| NID Height | 31 ft |
| Dam Height | 31 ft |
| Dam Length | 400 ft |
| Year Completed | 2001 (25 years old) |
Storage & Hydraulics
| NID Storage | 400 acre-ft |
| Max Storage | 400 acre-ft |
| Normal Storage | 250 acre-ft |
| Surface Area | 28 acres |
| Drainage Area | 2 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO20809 |
| Federal ID | MO20809 |
| More Info | State Dam Safety Program |