Rat Lake
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Nearest Entry Point: South Lake (via Mayhew Lake Road) #58 -or- Duncan Lake #60 Fishing: MN DNR; Green Sunfish, Smallmouth Bass (visually confirmed)
Maps: Fisher F-13; McKenzie #2 Lake Depth: MN DNR; 5 feet
Fire History: Lake Size: 56 acres
Campsites: 0 Wildlife Seen on Visit: Trumpeter Swan
Last Visited: May 31, 2025 Lake Elevation: 1522 feet
Water Clarity: MN DNR

ROUTES/PORTAGES FROM RAT LAKE:
To Rose Lake (Canadian-side of border): Walk the 2 rod portage
To Rose Lake (U.S.-side of border): Walk the 3 rod portage
To South Lake: Walk the 80 rod portage

Rat Lake

Gunflint Ranger District

Small shallow lake sandwiched between two large bodies of water. Water flows through Rat Lake from South Lake and into Rose Lake over a small set of rapids next to the portage.

There is a campsite on Rat Lake, but it is technically located on Rose Lake. BWCA Campsite 647 is connected to the portage between Rose Lake and Rat Lake. There are two portages between Rat Lake and Rose Lake, one on the Canadian side and one on the U.S. side. The U.S. portage is easier.

Rat Lake regularly hosts nesting trumpeter swans, so they are commonly seen here.

The Rose Lake cliffs are easily seen from the west end of Rat Lake.

The lake contains smallmouth bass.

Exploring Rat Lake

Routes to locations on Rat Lake are shown below:
Paddling from the Rose Lake portage to the South Lake portage
Paddling from South Lake portage to the Rose Lake portage

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PADDLING FROM THE ROSE LAKE PORTAGE TO THE SOUTH LAKE PORTAGE


Paddling across Rat Lake from the Rose Lake portage to the South Lake portage. Trumpeter swan swimming near the South Lake portage landing. The U.S./Canadian border runs right through the middle of Rat Lake.
Portage to South Lake -or- Explore Another Route
**********************************************END OF ROUTE***********************************************


PADDLING FROM THE SOUTH LAKE PORTAGE TO THE ROSE LAKE PORTAGE


There is a international boundary marker embedded in the rock right in the middle of the portage landing. Paddling across Rat Lake from the South Lake portage to the Rose Lake portage. Rose Mountain, the most prominent of the Rose Lake Cliffs, is visible directly across the lake as you leave the portage.
Portage to Rose Lake -or- Explore Another Route
**********************************************END OF ROUTE***********************************************

Route Connections for Rat Lake

From Rat Lake you can portage to the west into South Lake or to the east into Rose Lake.

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