Peninsular Dam

On May 18th, 2023! Michigan Department of Environment, Great Lakes, and Energy awarded $3,781,654 to the City of Ypsilanti for the removal of the high-hazard, poor-condition Peninsular Paper Dam. Read more at the link.


Located on the Huron River in Ypsilanti, Michigan, the Peninsular Paper Dam was originally constructed in 1867 to provide power for paper manufacturing. The dam failed in 1918 and was rebuilt in 1920. However, it no longer generates power and all electricity-generating equipment has been removed from the powerhouse.

The City of Ypsilanti owns the dam and is responsible for maintaining it. Michigan DEQ inspected the dam in 2014 and is requiring the city to submit a maintenance timeline to bring the dam up to safety standards.

The City of Ypsilanti approached HRWC to discuss options for repairing the dam or removing it. In 2018 the City of Ypsilanti and HRWC hired an engineering firm, with some funding support provided by the Friends of Pen Park, to do a feasibility study for removing the dam, restoring the river, and revitalizing Pen Park.

The 2022 Community Stakeholder Report is available here


If you are unable to attend the public engagement meetings, or have attended and would like to submit additional feedback, we want to hear from you! Please tell us your thoughts on the project. All input will be logged and considered as the project moves forward. You can leave a comment with the Peninsular Dam Removal Input Form (link). 

Image of the peninsular dam on a sunny day.
  1. History
  2. Frequently Asked Questions
  3. Resources
  4. Removal Status
  5. 2021-Sediment Study
  6. Town Hall
  7. Huron River Watershed Council


The dam was initially constructed in 1867 to provide power for paper manufacturing; it failed in 1918 and was rebuilt in 1920. The Peninsular Paper Company Dam powered a paper mill in Ypsilanti that produced newsprint for Chicago for a century from the 1860s to the 1970s. In the mid-1980s, the Peninsular Paper Company donated the Peninsular Paper Dam and land to the City of Ypsilanti. The City created a park on the land and is now responsible for maintaining the dam.

In April 2022, the City of Ypsilanti hosted a Town Hall update event. LimnoTech presented findings from their sediment report, and HRWC shared an overview of the restoration process.

In the autumn of 2021, the City led public forums to maintain transparency, convey information, answer questions, and encourage residents to guide the vision for river restoration. An ad hoc committee of volunteers, stakeholders and city officials led this public engagement process. The committee’s meetings are public; agendas, minutes, and links to meetings can be found through the Agenda Center on the City of Ypsilanti’s website under the heading “Pen Dam Public Engagement Committee.”

The Michigan Department of Natural Resources Fisheries Habitat Grant Program has provided funding for this effort into October 2022.

For study reports, plans, and more resources, please visit the Huron River Watershed Council Page.

The following grant proposals have been made available: 

Fisheries Habitat Grant Program 2019

Fisheries Habitat Grant Program 2020