Zimmerhanzel Lake Dam
Zimmerhanzel Lake Dam is an earth dam located in Williamson County, Texas, built in 1968. It carries a Significant hazard potential classification.
About Zimmerhanzel Lake Dam
The primary purpose of Zimmerhanzel Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Lookout At Brushy Creek Poa (private). It impounds the Tr-brushy Creek near Hutto.
The dam stands 19 feet tall and stretches 600 feet across, creates a reservoir covering 25 acres, has a maximum storage capacity of 304 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1968, the structure is well into its service life at over 50 years 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. An emergency action plan is in place for this dam. The most recent inspection on record was 06/04/2024.
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Location
| State | Texas |
| County | Williamson |
| Nearest City | Hutto |
| River/Stream | Tr-brushy Creek |
| Coordinates | 30.48971, -97.53600 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 19 ft |
| Dam Height | 19 ft |
| Dam Length | 600 ft |
| Year Completed | 1968 (58 years old) |
Storage & Hydraulics
| NID Storage | 304 acre-ft |
| Max Storage | 304 acre-ft |
| Normal Storage | 187 acre-ft |
| Surface Area | 25 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 775 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | LOOKOUT AT BRUSHY CREEK POA |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not Rated |
| Last Inspection | 06/04/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | TX01324 |
| Federal ID | TX01324 |
| More Info | State Dam Safety Program |