United Off-channel Reservoir Dam
United Off-channel Reservoir Dam is an earth dam located in Hidalgo County, Texas. It carries a High hazard potential classification.
About United Off-channel Reservoir Dam
United Off-channel Reservoir Dam is a dam in Hidalgo, Texas. The dam is owned by United Irrigation District (private). It impounds the Mission Main Canal.
The dam stands 18 feet tall and stretches 5,940 feet across, creates a reservoir covering 47 acres, has a maximum storage capacity of 768 acre-feet, and collects water from a drainage area of 49 square miles.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. An emergency action plan is in place for this dam.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Texas dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Texas |
| County | Hidalgo |
| River/Stream | Mission Main Canal |
| Coordinates | 26.18023, -98.35907 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 5,940 ft |
Storage & Hydraulics
| NID Storage | 768 acre-ft |
| Max Storage | 768 acre-ft |
| Normal Storage | 672 acre-ft |
| Surface Area | 47 acres |
| Drainage Area | 49 sq mi |
| Max Discharge | 735 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Owner | UNITED IRRIGATION DISTRICT |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | TX07545 |
| Federal ID | TX07545 |
| More Info | State Dam Safety Program |