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Little Falls Dam side view
Little Falls Dam in action
Overhead view of new Little Falls Dam
Construction on Little Falls Dam
Overhead view of Little Falls Dam being constructed
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Little Falls Dam Reconstruction

  • CLIENT: Wisconsin Department of Natural Resources (WDNR)
  • LOCATION: Willow River State Park, St. Croix County, WI

New life for historic dam

The Little Falls Dam was originally constructed in 1892 and reconstructed in 1906 at its present location. The WDNR needed a new dam designed to pass the 1,000-year return period flood, discharge cooler water from lower elevations in the reservoir, reduce the frequency of gate operations, and maintain public access to the dam. Mead & Hunt presented numerous dam configurations to address the many design objectives. We collaborated with agency staff to design a new dam composed of an overflow spillway, intake tower with multiple withdrawal elevations, four crest gates, and non-overflow sections.

The newly rebuilt dam is expected to provide a century of safe flood passage, user-friendly recreation amenities for park visitors, and easier gate operations and water level control for park staff.

Awards

ACEC Wisconsin, Engineering Excellence Awards, Best in State

Key Project Aspects

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26-foot-high dam

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1,000-year return flood period

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$14.5M project

More on this project

Mead & Hunt wins best of state from ACEC-Wisconsin
Shiny new dam in Wisconsin

Relevant Projects

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Montello Dam

Montello Dam Reconstruction

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Mahoning Creek Hydroelectric Project

Black River Falls Spillway

Black River Falls Spillway Reconstruction

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