102 River Tributaries Dam 12

102 River Tributaries Dam 12 is an earth dam located in Nodaway County, Missouri, built in 1962. It carries a Low hazard potential classification.

About 102 River Tributaries Dam 12

The primary purpose of 102 River Tributaries Dam 12 is grade stabilization. Grade stabilization dams prevent erosion by reducing the slope and velocity of water flowing through a channel. They're commonly used to stop gullies from deepening and to protect downstream land and infrastructure. The dam is owned by 102 River Trib Wrsd Subd (local government). It impounds the Thill Branch near Arkoe.

The dam stands 30 feet tall and stretches 460 feet across, creates a reservoir covering 9 acres, has a maximum storage capacity of 96 acre-feet, and collects water from a drainage area of 360 square miles. Completed in 1962, 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
CountyNodaway
Nearest CityArkoe
River/StreamThill Branch
Coordinates40.38122, -94.80489

Physical Characteristics

Dam TypeEarth
NID Height30 ft
Dam Height28 ft
Dam Length460 ft
Year Completed1962 (64 years old)

Storage & Hydraulics

NID Storage96 acre-ft
Max Storage96 acre-ft
Normal Storage30 acre-ft
Surface Area9 acres
Drainage Area360 sq mi
Max Discharge1,014 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeGrade Stabilization
Owner102 RIVER TRIB WRSD SUBD
Owner TypeLocal Government
Hazard ClassificationLow
Condition AssessmentNot Rated
Emergency Action PlanNot Required

Identifiers

NID IDMO10351
Federal IDMO10351
More InfoState Dam Safety Program

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