Tmpa Gibbons Creek Mine Dam Sp 50
Tmpa Gibbons Creek Mine Dam Sp 50 is an earth dam located in Grimes County, Texas, built in 1995. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Tmpa Gibbons Creek Mine Dam Sp 50
The primary purpose of Tmpa Gibbons Creek Mine Dam Sp 50 is tailings. Tailings dams contain waste material from mining operations — typically a slurry of finely ground rock left over after valuable minerals have been extracted. These structures require ongoing monitoring because tailings can contain heavy metals and other contaminants. The dam is owned by Texas Municipal Power Agency (local government). It impounds the Peach Creek near Navasota.
The dam stands 37 feet tall and stretches 5,550 feet across, creates a reservoir covering 212 acres, has a maximum storage capacity of 7,379 acre-feet, and collects water from a drainage area of 8 square miles. Completed in 1995, the structure is 31 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 07/06/2022.
At 37 feet, this dam is taller than 84% 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 | Grimes |
| Nearest City | Navasota |
| River/Stream | Peach Creek |
| Coordinates | 30.58978, -96.05734 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 37 ft |
| Dam Height | 37 ft |
| Dam Length | 5,550 ft |
| Year Completed | 1995 (31 years old) |
Storage & Hydraulics
| NID Storage | 7,379 acre-ft |
| Max Storage | 7,379 acre-ft |
| Normal Storage | 1,889 acre-ft |
| Surface Area | 212 acres |
| Drainage Area | 8 sq mi |
| Max Discharge | 74,284 cfs |
Ownership & Safety
| Purpose | Tailings |
| Owner | TEXAS MUNICIPAL POWER AGENCY |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/06/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | TX06982 |
| Federal ID | TX06982 |
| More Info | State Dam Safety Program |