Seven H Ranch Lake Dam
Seven H Ranch Lake Dam is an earth dam located in Hays County, Texas, built in 1963. It carries a Significant hazard potential classification.
About Seven H Ranch Lake Dam
The primary purpose of Seven H Ranch Lake Dam is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Geoffrey Hoese (private). It impounds the Tr-wanslow Creek near Wimberley.
The dam stands 21 feet tall and stretches 894 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 168 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1963, 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 07/13/2009. That was over 17 years ago.
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Location
| State | Texas |
| County | Hays |
| Nearest City | Wimberley |
| River/Stream | Tr-wanslow Creek |
| Coordinates | 30.10233, -98.25568 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 894 ft |
| Year Completed | 1963 (63 years old) |
Storage & Hydraulics
| NID Storage | 168 acre-ft |
| Max Storage | 168 acre-ft |
| Normal Storage | 39 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | GEOFFREY HOESE |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not Rated |
| Last Inspection | 07/13/2009 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | TX04661 |
| Federal ID | TX04661 |
| More Info | State Dam Safety Program |