Lopez Lake Dam is an earth dam located in Zapata County, Texas, built in 1942. It carries a Low hazard potential classification.
Dam profile
NID height · 17 ft17 ft tall and 1,980 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 Lopez Lake Dam
The primary purpose of Lopez 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 Lauro Lopez (private). It impounds the Tr-san Juan Creek.
The dam stands 17 feet tall and stretches 1,980 feet across, creates a reservoir covering 28 acres, and has a maximum storage capacity of 245 acre-feet. Completed in 1942, the structure is well-established, with more than 75 years of service.
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 | Zapata |
| River/Stream | Tr-san Juan Creek |
| Coordinates | 26.86420, -99.00467 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 1,980 ft |
| Year Completed | 1942 (84 years old) |
Storage & Hydraulics
| NID Storage | 245 acre-ft |
| Max Storage | 245 acre-ft |
| Normal Storage | 168 acre-ft |
| Surface Area | 28 acres |
| Spillway Type | None |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Lauro Lopez |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TX02414 |
| Federal ID | TX02414 |
| More Info | State Dam Safety Program |