Pierce Lake Dam

Pierce Lake Dam is an earth dam located in Hays County, Texas, built in 1974. It carries a Low hazard potential classification.

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 84% of dams nationwide.

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Low HazardNot Rated ConditionEmergency Action Plan: Not Required

Location

StateTexas
CountyHays
River/StreamTr-blanco River
Coordinates29.99734, -98.18955

Physical Characteristics

Dam TypeEarth
NID Height37 ft
Dam Height37 ft
Dam Length390 ft
Year Completed1974 (52 years old)

Storage & Hydraulics

NID Storage670 acre-ft
Max Storage670 acre-ft
Normal Storage209 acre-ft
Surface Area19 acres
Drainage Area1 sq mi
Max Discharge3,626 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeRecreation
OwnerLEWIS PIERCE
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentNot Rated
Last Inspection12/01/1983
Emergency Action PlanNot Required

Identifiers

NID IDTX01593
Federal IDTX01593
More InfoState Dam Safety Program

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