Winn Exploration Dam No 1
Winn Exploration Dam No 1 is an earth dam located in Maverick County, Texas, built in 1960. It carries a Significant hazard potential classification.
About Winn Exploration Dam No 1
The primary purpose of Winn Exploration Dam No 1 is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Winn Exploration Co Inc (private). It impounds the Rosita Creek.
The dam stands 24 feet tall and stretches 1,850 feet across, creates a reservoir covering 237 acres, has a maximum storage capacity of 3,070 acre-feet, and collects water from a drainage area of 9 square miles. Completed in 1960, 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. The most recent inspection on record was 01/21/2010. That was over 16 years ago.
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Location
| State | Texas |
| County | Maverick |
| River/Stream | Rosita Creek |
| Coordinates | 28.71214, -100.39284 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Height | 24 ft |
| Dam Length | 1,850 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 3,070 acre-ft |
| Max Storage | 3,070 acre-ft |
| Normal Storage | 1,050 acre-ft |
| Surface Area | 237 acres |
| Drainage Area | 9 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | WINN EXPLORATION CO INC |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not Rated |
| Last Inspection | 01/21/2010 |
| Emergency Action Plan | No |
Identifiers
| NID ID | TX04739 |
| Federal ID | TX04739 |
| More Info | State Dam Safety Program |