Northeast Region
Maine Fish and Wildlife Conservation Office
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Aquatic Connectivity and Stream Restoration
Project Snapshot



We are currently involved in a state-wide, multi-group effort to identify, assess, and replace stream-road crossings (culverts, bridges, roads, etc.) or in-stream structures (dams, etc.) where humans have altered natural stream function and/or
created barriers for fish passage.

According to the interagency, Stream Connectivity Work Group (SCWG), approximately 45% of more than 5,000 stream-road crossings surveyed on public lands in Maine represent physical barriers to fish, particularly the juvenile Brook Trout and Atlantic Salmon. These barriers range from undersized, perched, and debris-blocked culverts to remnant log-drive dams or hydroelectric dams.

In addition to blocking fish passage, such barriers also decrease ecological stream function, such as temperature regulation, sediment flow, and resilience to flood events.

"On the Ground" Restoration

Since 2005, the Maine Fishery Resources Office has provided technical expertise in order to assist partners with the completion of 196 aquatic connectivity projects that have restored unhindered fish passage and ecological stream processes to more than 650 miles of stream habitat in Maine watersheds. Nearly all of these restoration efforts have been conducted within designated critical habitat for endangered Atlantic salmon.

We remove these barriers and often replace them with structures, such as bridges or open-arch culverts, that span at least 1.2 times the bankfull width of the natural stream.


jam black beforejam black after

Jam Black Brook Fish Passage Project: Before and After.


If you are interested in submitting a project proposal for an on-the-ground stream restoration/ fish passage project, please see our funding page for more information. If you have any remaining questions, feel free to contact us.


Abbot A. Maine Road-Stream Crossing Survey Manual. United States Fish and Wildlife Service. Gulf of Maine Coastal Program. 2012.

Koenig S, Craig S. Restoring Salmonid Aquatic/Riparian Habitat: A Strategic Plan for the Downeast Maine DPS Rivers.

Maine Stream Viewer. Maine Stream Connectivity Work Group and Maine Office of GIS. (An online mapping tool that allows you to view the locations of surveyed barriers on public lands in Maine)

Moore S. 2013. Maine Stream Connectivity Work Group 2012-2013 Report. Prepared for the Maine Coastal Program, Department of Agriculture, Conservation and Forestry.


Carloe Brook Fish Passage Project
Washington County, Maine

carloe brook

Click the image to view a time-lapse video of the construction process.

Sponsor:Maine Forest Service/Private Landowner

Description: This project replaced an undersized and failing stream crossing on Carloe Brook, a major tributary to Clifford Lake. The stream crossing limited passage for trout and other aquatic organisms. The crossing was replaced with a bottomless arch culvert which opened approximately 3 miles of habitat previously inaccessible.

Projects & Proposals
Click any dropdown menu to view past,
present, and pending project
proposals that have been
submitted through our office.

National Fish Passage Program

Eastern Brook Trout Joint Venture

Atlantic Coastal Fish Habitat Partnership

Last updated: February 29, 2016