Lake Trammel Dam
Lake Trammel Dam is an earth dam located in Nolan County, Texas, built in 1915. It carries a High hazard potential classification and has a fair condition assessment.
About Lake Trammel Dam
The primary purpose of Lake Trammel Dam is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by City Of Sweetwater (local government). It impounds the Sweetwater Creek near Sweetwater.
The dam stands 57 feet tall and stretches 1,160 feet across, creates a reservoir covering 200 acres, has a maximum storage capacity of 6,780 acre-feet, and collects water from a drainage area of 49 square miles. Completed in 1915, the structure is over a century 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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 10/01/2019.
At 57 feet, this dam is taller than 95% 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 Texas 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 | Texas |
| County | Nolan |
| Nearest City | Sweetwater |
| River/Stream | Sweetwater Creek |
| Coordinates | 32.36294, -100.43620 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 57 ft |
| Dam Height | 57 ft |
| Dam Length | 1,160 ft |
| Year Completed | 1915 (111 years old) |
Storage & Hydraulics
| NID Storage | 6,780 acre-ft |
| Max Storage | 6,780 acre-ft |
| Normal Storage | 2,300 acre-ft |
| Surface Area | 200 acres |
| Drainage Area | 49 sq mi |
| Max Discharge | 81,500 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | CITY OF SWEETWATER |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 10/01/2019 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | TX02733 |
| Federal ID | TX02733 |
| More Info | State Dam Safety Program |