Wright Dam No 4 is an earth dam located in Webb County, Texas, built in 1911. It carries a Low hazard potential classification.
Dam profile
NID height · 14 ft14 ft tall and 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 Wright Dam No 4
The primary purpose of Wright Dam No 4 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 Dr La Wright Et Al (private). It impounds the Tr-rio Grande.
The dam stands 14 feet tall and stretches 650 feet across, and has a maximum storage capacity of 147 acre-feet. Completed in 1911, the structure is over a century 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. The most recent inspection on record was 06/13/1978. That was over 48 years ago.
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Location
| State | Texas |
| County | Webb |
| River/Stream | Tr-rio Grande |
| Coordinates | 27.45753, -99.44267 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 14 ft |
| Dam Height | 14 ft |
| Dam Length | 650 ft |
| Year Completed | 1911 (115 years old) |
Storage & Hydraulics
| NID Storage | 147 acre-ft |
| Max Storage | 147 acre-ft |
| Normal Storage | 27 acre-ft |
| Spillway Type | None |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Dr La Wright Et Al |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 06/13/1978 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TX02254 |
| Federal ID | TX02254 |
| More Info | State Dam Safety Program |