Boyanton Dam is an earth dam located in Dimmit County, Texas, built in 1913. It carries a Significant hazard potential classification.
Dam profile
NID height · 22 ft22 ft tall and 417 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 Boyanton Dam
The primary purpose of Boyanton Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Dimmit County Wid No 1 (local government). It impounds the Nueces River near Cotulla.
The dam stands 22 feet tall and stretches 417 feet across, and has a maximum storage capacity of 3,400 acre-feet. Completed in 1913, the structure is over a century old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Texas |
| County | Dimmit |
| Nearest City | Cotulla |
| River/Stream | Nueces River |
| Coordinates | 28.62314, -99.78766 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 417 ft |
| Year Completed | 1913 (113 years old) |
Storage & Hydraulics
| NID Storage | 3,400 acre-ft |
| Max Storage | 3,400 acre-ft |
| Normal Storage | 2,984 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Dimmit County Wid No 1 |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Emergency Action Plan | No |
Identifiers
| NID ID | TX07312 |
| Federal ID | TX07312 |
| More Info | State Dam Safety Program |