Griffin Lake Dam
Griffin Lake Dam is an earth dam located in Gregg County, Texas, built in 1953. It carries a Significant hazard potential classification and has a fair condition assessment.
About Griffin Lake Dam
The primary purpose of Griffin 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 Carlos Griffin (private). It impounds the Tr-wynns Bayou.
The dam stands 30 feet tall and stretches 600 feet across, creates a reservoir covering 26 acres, has a maximum storage capacity of 550 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1953, the structure is well into its service life at over 50 years old.
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 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 12/07/2021.
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Location
| State | Texas |
| County | Gregg |
| River/Stream | Tr-wynns Bayou |
| Coordinates | 32.39353, -94.77884 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 600 ft |
| Year Completed | 1953 (73 years old) |
Storage & Hydraulics
| NID Storage | 550 acre-ft |
| Max Storage | 550 acre-ft |
| Normal Storage | 240 acre-ft |
| Surface Area | 26 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 1 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | CARLOS GRIFFIN |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 12/07/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | TX03449 |
| Federal ID | TX03449 |
| More Info | State Dam Safety Program |