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Portage lake depth map

Portage in Cass County, Minnesota has survey depth contours from Minnesota DNR lake bathymetry. Open it in the studio to make a layered laser-cut lake map or a flat engraving of its shoreline and lake floor.

Open Portage in the studio

The studio frames the survey area, turns on Water depth and generates the terrain, ready to adjust and export as SVG layers.

Map of where Portage is in Cass County, Minnesota, about 400 km across50 km
The orange marker is the survey area; dots are other lakes with depth data. Map data: Natural Earth.

Survey facts

LocationCass County, Minnesota
Centre47.3432° N, 94.3117° W
Survey area4.3 km east–west × 3.1 km north–south
Depth dataSurvey contours
SourceMinnesota DNR lake bathymetry. Minnesota DNR General Geographic Data License; survey contours interpolated by TopoStack. https://www.dnr.state.mn.us/sitetools/data_software_license.html

Sizing a piece

Framed to the whole survey area, the map keeps its landscape shape. These are the scales at three common sizes. A tighter frame zooms in and a wider one adds shoreline, and the studio recalculates both.

Piece sizeMap scale
305 × 214 mm (12 × 8.4 in)about 1:14,000
406 × 286 mm (16 × 11.3 in)about 1:11,000
610 × 429 mm (24 × 16.9 in)about 1:7,100

Your sheet thickness sets the number of layers. If the lake needs more sheets than you want to cut, Fit depth compresses the lake floor and keeps the shoreline. If the piece is bigger than your laser bed, split it into interlocking pieces.

Nearby lakes with depth data

More about lake maps

Survey dates and water levels vary, and a survey can cover only part of a lake. Exports include an ATTRIBUTION.txt crediting the source; see sources and attribution. Depth data is decorative source material, not for navigation.

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