Dennis Smith Dam

Dennis Smith Dam is an earth dam located in Lucas County, Iowa, built in 2023. It carries a Low hazard potential classification.

About Dennis Smith Dam

The primary purpose of Dennis Smith 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 Dennis Smith (private). It impounds the Unnamed Tributary Of The Chariton River near Rathbun.

The dam stands 25 feet tall and stretches 402 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 62 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2023, the structure is relatively new.

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 Hazard ConditionEmergency Action Plan: Not Required

Location

StateIowa
CountyLucas
Nearest CityRathbun
River/StreamUnnamed Tributary Of The Chariton River
Coordinates40.94210, -93.31550

Physical Characteristics

Dam TypeEarth
NID Height25 ft
Dam Height25 ft
Dam Length402 ft
Year Completed2023 (3 years old)

Storage & Hydraulics

NID Storage62 acre-ft
Max Storage62 acre-ft
Normal Storage12 acre-ft
Surface Area3 acres
Drainage Area0 sq mi
Spillway TypeUncontrolled

Ownership & Safety

PurposeGrade Stabilization
OwnerDennis Smith
Owner TypePrivate
Hazard ClassificationLow
Emergency Action PlanNot Required

Identifiers

NID IDIA04420
Federal IDIA04420
More InfoState Dam Safety Program

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