Twin Lakes Dam
Twin Lakes Dam is an earth dam located in Brazoria County, Texas, built in 1955. It carries a High hazard potential classification and has a poor condition assessment.
About Twin Lakes Dam
The primary purpose of Twin Lakes Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Twin Lakes Club Inc (private). It impounds the Off Ch-san Bernard River.
The dam stands 8 feet tall and stretches 11,610 feet across, creates a reservoir covering 150 acres, has a maximum storage capacity of 1,134 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1955, 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 04/25/2024.
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 | Brazoria |
| River/Stream | Off Ch-san Bernard River |
| Coordinates | 29.25034, -95.83434 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 8 ft |
| Dam Height | 8 ft |
| Dam Length | 11,610 ft |
| Year Completed | 1955 (71 years old) |
Storage & Hydraulics
| NID Storage | 1,134 acre-ft |
| Max Storage | 1,134 acre-ft |
| Normal Storage | 630 acre-ft |
| Surface Area | 150 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | TWIN LAKES CLUB INC |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Poor |
| Last Inspection | 04/25/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | TX01761 |
| Federal ID | TX01761 |
| More Info | State Dam Safety Program |