Mc Callen Dam
Mc Callen Dam is an earth dam located in Travis County, Texas, built in 1998. It carries a High hazard potential classification.
About Mc Callen Dam
Mc Callen Dam is a dam in Travis, Texas. The dam is owned by City Of Austin (local government). It impounds the Tr-walnut Creek near Austin.
The dam stands 15 feet tall and stretches 825 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 99 acre-feet, and collects water from a drainage area of 363 square miles. Completed in 1998, the structure is 28 years old.
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. The most recent inspection on record was 01/24/2019. 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 | Travis |
| Nearest City | Austin |
| River/Stream | Tr-walnut Creek |
| Coordinates | 30.40616, -97.66473 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 825 ft |
| Year Completed | 1998 (28 years old) |
Storage & Hydraulics
| NID Storage | 99 acre-ft |
| Max Storage | 99 acre-ft |
| Normal Storage | 24 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 363 sq mi |
| Max Discharge | 1,253 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Owner | CITY OF AUSTIN |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Not Rated |
| Last Inspection | 01/24/2019 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | TX07286 |
| Federal ID | TX07286 |
| More Info | State Dam Safety Program |