Big Alamo Lake Dam is an earth dam located in La Salle County, Texas, built in 1963. It carries a Low hazard potential classification.
Dam profile
NID height · 17 ft17 ft tall and 2,650 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 Big Alamo Lake Dam
The primary purpose of Big Alamo Lake Dam is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Pat Welder (private). It impounds the Tr-green Branch.
The dam stands 17 feet tall and stretches 2,650 feet across, creates a reservoir covering 116 acres, and has a maximum storage capacity of 1,113 acre-feet. Completed in 1963, 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 | La Salle |
| River/Stream | Tr-green Branch |
| Coordinates | 28.28602, -98.83302 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 2,650 ft |
| Year Completed | 1963 (63 years old) |
Storage & Hydraulics
| NID Storage | 1,113 acre-ft |
| Max Storage | 1,113 acre-ft |
| Normal Storage | 548 acre-ft |
| Surface Area | 116 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Pat Welder |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TX01994 |
| Federal ID | TX01994 |
| More Info | State Dam Safety Program |