Port Perry Dam
Port Perry Dam is an earth dam located in Perry County, Missouri, built in 1973. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Port Perry Dam
The primary purpose of Port Perry Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is state-owned. It impounds the Tr Nations Creek near Silver Lake.
The dam stands 70 feet tall and stretches 900 feet across, creates a reservoir covering 187 acres, has a maximum storage capacity of 6,506 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1973, 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 01/05/2023.
At 70 feet, this dam is taller than 96% of all dams in the United States.
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 | Perry |
| Nearest City | Silver Lake |
| River/Stream | Tr Nations Creek |
| Coordinates | 37.66176, -90.05608 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 70 ft |
| Dam Height | 70 ft |
| Dam Length | 900 ft |
| Year Completed | 1973 (53 years old) |
Storage & Hydraulics
| NID Storage | 6,506 acre-ft |
| Max Storage | 6,506 acre-ft |
| Normal Storage | 828 acre-ft |
| Surface Area | 187 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 6,992 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner Type | State |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 01/05/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MO30030 |
| Federal ID | MO30030 |
| More Info | State Dam Safety Program |