Thompson Dam

Thompson Dam is an earth dam located in Cherokee County, Iowa, built in 1961. It carries a Low hazard potential classification.

About Thompson Dam

The primary purpose of Thompson Dam is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Mildred Thompson (private). It impounds the Tr-little Sioux River near Cherokee.

The dam stands 28 feet tall and stretches 358 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 50 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1961, 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. The most recent inspection on record was 01/03/1963. That was over 63 years ago.

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Low HazardNot Rated ConditionEmergency Action Plan: Not Required

Location

StateIowa
CountyCherokee
Nearest CityCherokee
River/StreamTr-little Sioux River
Coordinates42.81940, -95.50860

Physical Characteristics

Dam TypeEarth
NID Height28 ft
Dam Height28 ft
Dam Length358 ft
Year Completed1961 (65 years old)

Storage & Hydraulics

NID Storage50 acre-ft
Max Storage50 acre-ft
Normal Storage21 acre-ft
Surface Area3 acres
Drainage Area0 sq mi
Spillway TypeUncontrolled

Ownership & Safety

PurposeFire Protection, Stock, Or Small Fish Pond
OwnerMildred Thompson
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentNot Rated
Last Inspection01/03/1963
Emergency Action PlanNot Required

Identifiers

NID IDIA00194
Federal IDIA00194
More InfoState Dam Safety Program

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