San Isidro Detention Pond No 3 Dam
San Isidro Detention Pond No 3 Dam is an earth dam located in Webb County, Texas. It carries a High hazard potential classification and has a satisfactory condition assessment.
About San Isidro Detention Pond No 3 Dam
The primary purpose of San Isidro Detention Pond No 3 Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by City Of Laredo;san Isidro Management Lc (local government). It impounds the Las Manadas Creek.
The dam stands 18 feet tall and stretches 250 feet across, creates a reservoir covering 9 acres, has a maximum storage capacity of 150 acre-feet, and collects water from a drainage area of 1 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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 01/30/2024.
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 | Webb |
| River/Stream | Las Manadas Creek |
| Coordinates | 27.60916, -99.46842 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 250 ft |
Storage & Hydraulics
| NID Storage | 150 acre-ft |
| Max Storage | 150 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 3,184 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | CITY OF LAREDO;SAN ISIDRO MANAGEMENT LC |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 01/30/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | TX07193 |
| Federal ID | TX07193 |
| More Info | State Dam Safety Program |