Grindstone-lost-muddy Watershed Dam C- 28

Grindstone-lost-muddy Watershed Dam C- 28 is an earth dam located in Gentry County, Missouri, built in 1978. It carries a Low hazard potential classification.

About Grindstone-lost-muddy Watershed Dam C- 28

The primary purpose of Grindstone-lost-muddy Watershed Dam C- 28 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 Grnstn-lst Mdy Cr Wtrsd (local government). It impounds the Tr-willow Creek near Pattonsburg.

The dam stands 23 feet tall and stretches 460 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 120 acre-feet, and collects water from a drainage area of 200 square miles. Completed in 1978, the structure is 48 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
CountyGentry
Nearest CityPattonsburg
River/StreamTr-willow Creek
Coordinates40.07666, -94.49491

Physical Characteristics

Dam TypeEarth
NID Height23 ft
Dam Height21 ft
Dam Length460 ft
Year Completed1978 (48 years old)

Storage & Hydraulics

NID Storage120 acre-ft
Max Storage120 acre-ft
Normal Storage45 acre-ft
Surface Area4 acres
Drainage Area200 sq mi
Max Discharge525 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeGrade Stabilization
OwnerGRNSTN-LST MDY CR WTRSD
Owner TypeLocal Government
Hazard ClassificationLow
Condition AssessmentNot Rated
Emergency Action PlanNot Required

Identifiers

NID IDMO11883
Federal IDMO11883
More InfoState Dam Safety Program

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