Grand Portage National Monument

The fort on the shore of Grand Portage Bay
The fort on Grand Portage Bay and Hat Island, seen from Mt. Rose


An 8.5-mile trail from the fort on Lake Superior up to the Pigeon River led fur traders to the interior of the continent. Today, "Kitchi Onigaming" (Ojibwe for "the great carrying place") is co-managed by the National Park Service and the Grand Portage Band of Ojibwe Indians.

Take a walk up the path and explore our resource briefs and reports to learn more about what we're learning at Grand Portage National Monument.

Resources Briefs are condensed versions of our technical reports. They rely on graphics and images more than dense scientific writing, but anyone who is intrigued and wants to know more can always use the resource brief as an entry into the report.

Source: Data Store Saved Search 3443 (results presented are a subset). To search for additional information, visit the Data Store.

These technical reports are produced by network staff and other scientists working at Grand Portage. Lots of information, lots of fascinating discoveries.

Source: Data Store Saved Search 3444 (results presented are a subset). To search for additional information, visit the Data Store.

A collection of different sizes and shapes of dragonfly larvae. Most are brown, some are light green.

Kristofer Rolfhus/University of Wisconsin-La Crosse

Dragonfly Mercury Project

Find out the latest about mercury and dragonfly larvae at your park!

As a foundational part of the aquatic food web, dragonfly larvae we collect each summer are tested for mercury in the environment, which helps us understand mercury contamination at higher levels of the food web.

Visit the website below to find the latest "dragonflier" for Grand Portage.

The Dragonfly Mercury Project Annual Data Fliers (


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    Last updated: October 4, 2023