Portland City Lake Dam is an earth dam located in Sumner County, Tennessee, built in 1945. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 34 ft34 ft tall and 614 ft long, taller than 78% 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 Portland City Lake Dam
Portland City Lake Dam is a dam in Sumner, Tennessee. The dam is owned by City of Portland (local government). It impounds the Trib-w Fork Drakes Creek near Peden Mill.
The dam stands 34 feet tall and stretches 614 feet across, creates a reservoir covering 24 acres, has a maximum storage capacity of 422 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1945, the structure is well-established, with more than 75 years of service.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. 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 05/16/2024.
At 34 feet, this dam is taller than 78% of dams nationwide.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Tennessee |
| County | Sumner |
| Nearest City | Peden Mill |
| River/Stream | Trib-w Fork Drakes Creek |
| Coordinates | 36.60667, -86.48806 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 34 ft |
| Dam Length | 614 ft |
| Year Completed | 1945 (81 years old) |
Storage & Hydraulics
| NID Storage | 422 acre-ft |
| Max Storage | 422 acre-ft |
| Normal Storage | 272 acre-ft |
| Surface Area | 24 acres |
| Drainage Area | 1 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Owner | City of Portland |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/16/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | TN16510 |
| Federal ID | TN16510 |
| More Info | State Dam Safety Program |