Max Nelson Lake Dam

Max Nelson Lake Dam is an earth dam located in Harrison County, Missouri, built in 1977. It carries a Low hazard potential classification.

About Max Nelson Lake Dam

The primary purpose of Max Nelson Lake Dam 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 Max Nelson (private). It impounds the Tr-big Creek near Pattonsburg.

The dam stands 27 feet tall and stretches 460 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 91 acre-feet, and collects water from a drainage area of 90 square miles. Completed in 1977, the structure is 49 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
CountyHarrison
Nearest CityPattonsburg
River/StreamTr-big Creek
Coordinates40.24623, -94.11305

Physical Characteristics

Dam TypeEarth
NID Height27 ft
Dam Height26 ft
Dam Length460 ft
Year Completed1977 (49 years old)

Storage & Hydraulics

NID Storage91 acre-ft
Max Storage91 acre-ft
Normal Storage36 acre-ft
Surface Area7 acres
Drainage Area90 sq mi
Max Discharge125 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeGrade Stabilization
OwnerMAX NELSON
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentNot Rated
Emergency Action PlanNot Required

Identifiers

NID IDMO11239
Federal IDMO11239
More InfoState Dam Safety Program

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