Nestled beside the reconstructed mill dam at Leonard’s Mills, the Fishway—or fish ladder—plays an important role in supporting the annual migration of alewives, a species native to Maine's rivers and streams.
Guiding Fish Upstream
This type of fish ladder is a pool and weir system, which helps fish gradually ascend past obstacles like dams by swimming through a series of stepped pools. It’s a practical example of how early engineering could work in harmony with nature.
An Ancient Journey Restored
Alewives, a species of river herring, are believed to have migrated through this area long before European settlement. They swim upstream from the ocean each spring to spawn in freshwater habitats like Blackman Stream.
The Fishway at the museum helps restore that natural cycle, allowing visitors to witness a time-honored ecological event that was once threatened by industrial development.
A Living Link to the Past
More than a water feature, the Fishway reflects the museum’s broader mission to celebrate Maine’s forest and river heritage—not just through historical buildings, but by supporting the living systems that once sustained the communities of this region.
Whether you visit during the alewife run in late spring or simply stop to appreciate the gentle sound of water flowing over stone, the Fishway offers a quiet moment of connection to Maine’s enduring natural rhythms.
Shape the Future of the Past
Share your time, learn something new, and become part of a museum unlike any other. From seasonal events to weekly projects, volunteers help us bring history to life and keep this special place running strong year-round.
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