Trigg Lake Dam
Trigg Lake Dam is an earth dam located in Tarrant County, Texas, built in 1982. It carries a High hazard potential classification and has a fair condition assessment.
About Trigg Lake Dam
The primary purpose of Trigg Lake Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Dallas-ft Worth International Airport Board (local government). It impounds the Tr-bear Creek near Irving.
The dam stands 46 feet tall and stretches 1,200 feet across, creates a reservoir covering 41 acres, has a maximum storage capacity of 1,012 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1982, the structure is 44 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 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 07/29/2022.
At 46 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 | Tarrant |
| Nearest City | Irving |
| River/Stream | Tr-bear Creek |
| Coordinates | 32.85332, -97.04412 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 46 ft |
| Dam Height | 46 ft |
| Dam Length | 1,200 ft |
| Year Completed | 1982 (44 years old) |
Storage & Hydraulics
| NID Storage | 1,012 acre-ft |
| Max Storage | 1,012 acre-ft |
| Normal Storage | 269 acre-ft |
| Surface Area | 41 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 9,944 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | DALLAS-FT WORTH INTERNATIONAL AIRPORT BOARD |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 07/29/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | TX05801 |
| Federal ID | TX05801 |
| More Info | State Dam Safety Program |