Twin Tank Dam is an earth dam located in Zavala County, Texas, built in 1971. It carries a Low hazard potential classification.
Dam profile
NID height · 15 ft15 ft tall and 2,000 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 Twin Tank Dam
The primary purpose of Twin 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 Ed Cassin Jr (private). It impounds the Tr-galina Slough.
The dam stands 15 feet tall and stretches 2,000 feet across, creates a reservoir covering 25 acres, and has a maximum storage capacity of 238 acre-feet. Completed in 1971, 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 | Zavala |
| River/Stream | Tr-galina Slough |
| Coordinates | 28.89833, -99.64833 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 2,000 ft |
| Year Completed | 1971 (55 years old) |
Storage & Hydraulics
| NID Storage | 238 acre-ft |
| Max Storage | 238 acre-ft |
| Normal Storage | 110 acre-ft |
| Surface Area | 25 acres |
| Spillway Type | None |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Ed Cassin Jr |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TX05582 |
| Federal ID | TX05582 |
| More Info | State Dam Safety Program |