Pierce Lake Dam is an earth dam located in Hays County, Texas, built in 1974. It carries a Low hazard potential classification.
Dam profile
NID height · 37 ft37 ft tall and 390 ft long, taller than 83% of U.S. dams with a recorded height. 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 Pierce Lake Dam
The primary purpose of Pierce Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Lewis Pierce (private). It impounds the Tr-blanco River.
The dam stands 37 feet tall and stretches 390 feet across, creates a reservoir covering 19 acres, has a maximum storage capacity of 670 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1974, 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 12/01/1983. That was over 42 years ago.
At 37 feet, this dam is taller than 83% of dams nationwide.
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Location
| State | Texas |
| County | Hays |
| River/Stream | Tr-blanco River |
| Coordinates | 29.99734, -98.18955 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 37 ft |
| Dam Height | 37 ft |
| Dam Length | 390 ft |
| Year Completed | 1974 (52 years old) |
Storage & Hydraulics
| NID Storage | 670 acre-ft |
| Max Storage | 670 acre-ft |
| Normal Storage | 209 acre-ft |
| Surface Area | 19 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 3,626 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Lewis Pierce |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 12/01/1983 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TX01593 |
| Federal ID | TX01593 |
| More Info | State Dam Safety Program |