Thomas Dam

Thomas Dam is an earth dam located in Jackson County, Iowa, built in 1959. It carries a Low hazard potential classification.

About Thomas Dam

The primary purpose of Thomas 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 Don Thomas (private). It impounds the Tr-south Fork Maquoketa River near Canton.

The dam stands 19 feet tall and stretches 350 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 55 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1959, 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 05/08/1980. That was over 45 years ago.

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Low HazardNot Rated ConditionEmergency Action Plan: Not Required

Location

StateIowa
CountyJackson
Nearest CityCanton
River/StreamTr-south Fork Maquoketa River
Coordinates42.16750, -90.89420

Physical Characteristics

Dam TypeEarth
NID Height19 ft
Dam Height19 ft
Dam Length350 ft
Year Completed1959 (67 years old)

Storage & Hydraulics

NID Storage55 acre-ft
Max Storage55 acre-ft
Normal Storage20 acre-ft
Surface Area4 acres
Drainage Area0 sq mi
Spillway TypeUncontrolled

Ownership & Safety

PurposeFire Protection, Stock, Or Small Fish Pond
OwnerDon Thomas
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentNot Rated
Last Inspection05/08/1980
Emergency Action PlanNot Required

Identifiers

NID IDIA00521
Federal IDIA00521
More InfoState Dam Safety Program

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