Walnut Branch North Detention Dam
Walnut Branch North Detention Dam is an earth dam located in Guadalupe County, Texas, built in 2010. It carries a High hazard potential classification.
About Walnut Branch North Detention Dam
The primary purpose of Walnut Branch North Detention 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 Seguin (local government). It impounds the Walnut Branch near Seguin.
The dam stands 12 feet tall and stretches 3,605 feet across, and has a maximum storage capacity of 568 acre-feet. Completed in 2010, the structure is relatively new.
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. Notably, no emergency action plan is currently on file for this high-hazard dam. The most recent inspection on record was 09/26/2018. That was 7 years ago, which is on the longer end for a high-hazard structure.
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 | Guadalupe |
| Nearest City | Seguin |
| River/Stream | Walnut Branch |
| Coordinates | 29.59054, -97.98508 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 3,605 ft |
| Year Completed | 2010 (16 years old) |
Storage & Hydraulics
| NID Storage | 568 acre-ft |
| Max Storage | 568 acre-ft |
| Max Discharge | 1,145 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | CITY OF SEGUIN |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Not Rated |
| Last Inspection | 09/26/2018 |
| Emergency Action Plan | No |
Identifiers
| NID ID | TX07341 |
| Federal ID | TX07341 |
| More Info | State Dam Safety Program |