Piedra Tank Dam is an earth dam located in Duval County, Texas, built in 1958. It carries a Low hazard potential classification.
Dam profile
NID height · 14 ft14 ft tall and 1,037 ft long. 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 Piedra Tank Dam
The primary purpose of Piedra Tank Dam is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Exxon Mobil Corporation (private). It impounds the Tr-ygnacio Creek.
The dam stands 14 feet tall and stretches 1,037 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 61 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1958, the structure is well into its service life at over 50 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life.
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Location
| State | Texas |
| County | Duval |
| River/Stream | Tr-ygnacio Creek |
| Coordinates | 27.99555, -98.69226 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 14 ft |
| Dam Height | 14 ft |
| Dam Length | 1,037 ft |
| Year Completed | 1958 (68 years old) |
Storage & Hydraulics
| NID Storage | 61 acre-ft |
| Max Storage | 61 acre-ft |
| Normal Storage | 40 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 1 sq mi |
| Spillway Type | None |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Exxon Mobil Corporation |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TX06648 |
| Federal ID | TX06648 |
| More Info | State Dam Safety Program |