Willow Lake Dam is an earth dam located in San Patricio County, Texas, built in 1970. It carries a Low hazard potential classification.
Dam profile
NID height · 20 ft20 ft tall and 620 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 Willow Lake Dam
The primary purpose of Willow Lake Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Lonnie Glasscock III (private). It impounds the Tr-nueces River.
The dam stands 20 feet tall and stretches 620 feet across, creates a reservoir covering 4 acres, and has a maximum storage capacity of 65 acre-feet. Completed in 1970, 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 | San Patricio |
| River/Stream | Tr-nueces River |
| Coordinates | 27.97649, -97.76124 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 620 ft |
| Year Completed | 1970 (56 years old) |
Storage & Hydraulics
| NID Storage | 65 acre-ft |
| Max Storage | 65 acre-ft |
| Normal Storage | 32 acre-ft |
| Surface Area | 4 acres |
| Spillway Type | None |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Lonnie Glasscock III |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TX05484 |
| Federal ID | TX05484 |
| More Info | State Dam Safety Program |