Hamilton City Lake Dam
Hamilton City Lake Dam is an earth dam located in Hamilton County, Texas, built in 1923. It carries a High hazard potential classification and has a unsatisfactory condition assessment.
About Hamilton City Lake Dam
The primary purpose of Hamilton City Lake 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 Hamilton (local government). It impounds the Twomile Creek.
The dam stands 45 feet tall and stretches 940 feet across, creates a reservoir covering 81 acres, has a maximum storage capacity of 1,104 acre-feet, and collects water from a drainage area of 12 square miles. Completed in 1923, 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 unsatisfactory, indicating serious safety deficiencies exist that require immediate attention or remedial action. An emergency action plan is in place for this dam. The most recent inspection on record was 04/13/2022.
At 45 feet, this dam is taller than 91% of dams nationwide.
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 | Hamilton |
| River/Stream | Twomile Creek |
| Coordinates | 31.70276, -98.08106 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 45 ft |
| Dam Height | 45 ft |
| Dam Length | 940 ft |
| Year Completed | 1923 (103 years old) |
Storage & Hydraulics
| NID Storage | 1,104 acre-ft |
| Max Storage | 1,104 acre-ft |
| Normal Storage | 614 acre-ft |
| Surface Area | 81 acres |
| Drainage Area | 12 sq mi |
| Max Discharge | 1 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | CITY OF HAMILTON |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Unsatisfactory |
| Last Inspection | 04/13/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | TX00788 |
| Federal ID | TX00788 |
| More Info | State Dam Safety Program |