Roark Lake No 1 Dam is an earth dam located in McMullen County, Texas, built in 1955. It carries a Low hazard potential classification.
Dam profile
NID height · 16 ft16 ft tall and 1,200 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 Roark Lake No 1 Dam
The primary purpose of Roark Lake No 1 Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by James Roark (private). It impounds the Tr-san Miguel Creek.
The dam stands 16 feet tall and stretches 1,200 feet across, has a maximum storage capacity of 140 acre-feet, and collects water from a drainage area of 1,250 square miles. Completed in 1955, 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.
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Location
| State | Texas |
| County | McMullen |
| River/Stream | Tr-san Miguel Creek |
| Coordinates | 28.56667, -98.53333 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 1,200 ft |
| Year Completed | 1955 (71 years old) |
Storage & Hydraulics
| NID Storage | 140 acre-ft |
| Max Storage | 140 acre-ft |
| Normal Storage | 105 acre-ft |
| Drainage Area | 1,250 sq mi |
| Spillway Type | None |
Ownership & Safety
| Purpose | Recreation |
| Owner | James Roark |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TX06754 |
| Federal ID | TX06754 |
| More Info | State Dam Safety Program |