El Llano Tank Dam is an earth dam located in McMullen County, Texas, built in 1952. It carries a Low hazard potential classification.
Dam profile
NID height · 17 ft17 ft tall and 1,520 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 El Llano Tank Dam
El Llano Tank Dam is a dam in McMullen, Texas. The dam is owned by Briscoe Ranch Inc (private). It impounds the Tr-guadalupe Creek.
The dam stands 17 feet tall and stretches 1,520 feet across, creates a reservoir covering 35 acres, and has a maximum storage capacity of 224 acre-feet. Completed in 1952, 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 | McMullen |
| River/Stream | Tr-guadalupe Creek |
| Coordinates | 28.32828, -98.74421 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 1,520 ft |
| Year Completed | 1952 (74 years old) |
Storage & Hydraulics
| NID Storage | 224 acre-ft |
| Max Storage | 224 acre-ft |
| Normal Storage | 108 acre-ft |
| Surface Area | 35 acres |
| Spillway Type | None |
Ownership & Safety
| Owner | Briscoe Ranch Inc |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TX03046 |
| Federal ID | TX03046 |
| More Info | State Dam Safety Program |