Big Tank Dam

Big Tank Dam is an earth dam located in McMullen County, Texas, built in 1956. It carries a Low hazard potential classification.

About Big Tank Dam

The primary purpose of Big Tank Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Wl Flowers Et Al (private). It impounds the Tr-nueces River.

The dam stands 12 feet tall and stretches 1,170 feet across, creates a reservoir covering 40 acres, and has a maximum storage capacity of 290 acre-feet. Completed in 1956, 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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Low HazardNot Rated ConditionEmergency Action Plan: Not Required

Location

StateTexas
CountyMcMullen
River/StreamTr-nueces River
Coordinates28.21308, -98.70331

Physical Characteristics

Dam TypeEarth
NID Height12 ft
Dam Height12 ft
Dam Length1,170 ft
Year Completed1956 (70 years old)

Storage & Hydraulics

NID Storage290 acre-ft
Max Storage290 acre-ft
Normal Storage160 acre-ft
Surface Area40 acres
Spillway TypeNone

Ownership & Safety

PurposeIrrigation
OwnerWL FLOWERS ET AL
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentNot Rated
Emergency Action PlanNot Required

Identifiers

NID IDTX03028
Federal IDTX03028
More InfoState Dam Safety Program

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