Lake Gemay Dam

Lake Gemay Dam is an earth dam located in Texas County, Missouri, built in 1964. It carries a Low hazard potential classification.

About Lake Gemay Dam

The primary purpose of Lake Gemay 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 Joseph Mueller (private). It impounds the Tr-north Prong Jack Fork Riv near Alley Spring.

The dam stands 27 feet tall and stretches 470 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 53 acre-feet, and collects water from a drainage area of 19 square miles. Completed in 1964, 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

StateMissouri
CountyTexas
Nearest CityAlley Spring
River/StreamTr-north Prong Jack Fork Riv
Coordinates37.14096, -91.87382

Physical Characteristics

Dam TypeEarth
NID Height27 ft
Dam Height27 ft
Dam Length470 ft
Year Completed1964 (62 years old)

Storage & Hydraulics

NID Storage53 acre-ft
Max Storage53 acre-ft
Normal Storage43 acre-ft
Surface Area1 acres
Drainage Area19 sq mi
Spillway TypeUncontrolled

Ownership & Safety

PurposeFlood Risk Reduction
OwnerJOSEPH MUELLER
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentNot Rated
Emergency Action PlanNot Required

Identifiers

NID IDMO30106
Federal IDMO30106
More InfoState Dam Safety Program

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