Dry Devils and Lowrey Ws Scs Site 9 Dam

Dry Devils and Lowrey Ws Scs Site 9 Dam is an earth dam located in Sutton County, Texas, built in 1960. It carries a Low hazard potential classification.

Hazard potentialLowFailure would cause limited damage
ConditionNot assessed
Emergency action planOn file
Last inspection02/20/2008
Height34 ft
Built196066 years ago

Dam profile

NID height · 34 ft
34 FT TWO-STORY HOUSEMEDIAN U.S. DAM · 24 FT

34 ft tall and 2,415 ft long, taller than 78% 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 Dry Devils and Lowrey Ws Scs Site 9 Dam

The primary purpose of Dry Devils and Lowrey Ws Scs Site 9 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 Edwards Plateau Swcd;sutton County (local government). It impounds the Lowrey Draw near Sonora.

The dam stands 34 feet tall and stretches 2,415 feet across, creates a reservoir covering 10 acres, has a maximum storage capacity of 1,289 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1960, 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. An emergency action plan is in place for this dam. The most recent inspection on record was 02/20/2008. That was over 18 years ago.

At 34 feet, this dam is taller than 78% of dams nationwide.

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Location

StateTexas
CountySutton
Nearest CitySonora
River/StreamLowrey Draw
Coordinates30.67464, -100.55892

Physical Characteristics

Dam TypeEarth
NID Height34 ft
Dam Height34 ft
Dam Length2,415 ft
Year Completed1960 (66 years old)

Storage & Hydraulics

NID Storage1,289 acre-ft
Max Storage1,289 acre-ft
Normal Storage45 acre-ft
Surface Area10 acres
Drainage Area2 sq mi
Max Discharge6,441 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeFlood Risk Reduction
OwnerEdwards Plateau Swcd;sutton County
Owner TypeLocal Government
Hazard ClassificationLow
Condition AssessmentNot assessed
Last Inspection02/20/2008
Emergency Action PlanYes

Identifiers

NID IDTX02304
Federal IDTX02304
More InfoState Dam Safety Program