Atlas Feed Mill

Atlas Feed Mill is a gravity dam located in Polk County, Wisconsin, built in 1874. It carries a Significant hazard potential classification and has a fair condition assessment.

About Atlas Feed Mill

The primary purpose of Atlas Feed Mill is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Polk County (local government). It impounds the Trade River near Atlas.

The dam stands 14 feet tall and stretches 92 feet across, creates a reservoir covering 153 acres, has a maximum storage capacity of 1,610 acre-feet, and collects water from a drainage area of 45 square miles. Completed in 1874, the structure is one of the older dams in the region, with over a century and a half of service.

This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 11/05/2019.

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Significant HazardFair ConditionEmergency Action Plan: Yes

Location

StateWisconsin
CountyPolk
Nearest CityAtlas
River/StreamTrade River
Coordinates45.63429, -92.59121

Physical Characteristics

Dam TypeGravity
NID Height14 ft
Dam Height14 ft
Dam Length92 ft
Year Completed1874 (152 years old)

Storage & Hydraulics

NID Storage1,610 acre-ft
Max Storage1,610 acre-ft
Normal Storage1,100 acre-ft
Surface Area153 acres
Drainage Area45 sq mi
Max Discharge1,823 cfs
Spillway TypeControlled

Ownership & Safety

PurposeRecreation
OwnerPolk County
Owner TypeLocal Government
Hazard ClassificationSignificant
Condition AssessmentFair
Last Inspection11/05/2019
Emergency Action PlanYes

Identifiers

NID IDWI00173
Federal IDWI00173
More InfoState Dam Safety Program

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