Coffield Lake Dam is an earth dam located in Grimes County, Texas, built in 1999. It carries a Significant hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 35 ft35 ft tall and 1,159 ft long, taller than 80% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Coffield Lake Dam
The primary purpose of Coffield Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Episcopal Diocese of Texas (private). It impounds the Tr-beason Creek.
The dam stands 35 feet tall and stretches 1,159 feet across, creates a reservoir covering 99 acres, has a maximum storage capacity of 1,313 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1999, the structure is 27 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 09/24/2019.
At 35 feet, this dam is taller than 80% of dams nationwide.
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Location
| State | Texas |
| County | Grimes |
| River/Stream | Tr-beason Creek |
| Coordinates | 30.24045, -95.97170 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 35 ft |
| Dam Length | 1,159 ft |
| Year Completed | 1999 (27 years old) |
Storage & Hydraulics
| NID Storage | 1,313 acre-ft |
| Max Storage | 1,313 acre-ft |
| Normal Storage | 731 acre-ft |
| Surface Area | 99 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 2,358 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Episcopal Diocese of Texas |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 09/24/2019 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | TX07054 |
| Federal ID | TX07054 |
| More Info | State Dam Safety Program |