Mariposa Lake Dam is an earth dam located in Dimmit County, Texas, built in 1958. It carries a Low hazard potential classification.
Dam profile
NID height · 11 ft11 ft tall and 850 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Mariposa Lake Dam
The primary purpose of Mariposa Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Jr Marmion Jr (private). It impounds the Tr-el Moro Creek near Asherton.
The dam stands 11 feet tall and stretches 850 feet across, and has a maximum storage capacity of 264 acre-feet. Completed in 1958, the structure is well into its service life at over 50 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. The most recent inspection on record was 04/24/1985. That was over 41 years ago.
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Location
| State | Texas |
| County | Dimmit |
| Nearest City | Asherton |
| River/Stream | Tr-el Moro Creek |
| Coordinates | 28.40862, -99.76762 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 850 ft |
| Year Completed | 1958 (68 years old) |
Storage & Hydraulics
| NID Storage | 264 acre-ft |
| Max Storage | 264 acre-ft |
| Normal Storage | 63 acre-ft |
| Spillway Type | None |
Ownership & Safety
| Purpose | Recreation |
| Owner | Jr Marmion Jr |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 04/24/1985 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TX05947 |
| Federal ID | TX05947 |
| More Info | State Dam Safety Program |