Surveyed grids describe the lake floor from published bathymetric data. Survey contours use measured depth lines with the spaces between them interpolated. A listing may cover only part of a lake; gaps use existing terrain or modeled depths. Check the source notes after generating.
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Using a lake’s depth data
Select Open in studio to frame the survey area, then generate terrain with Water depth enabled. Some small lakes may lack a matching lake outline. The studio’s source notes identify available survey data and any modeled gaps.
If a deep lake exceeds the available layers, choose Fit depth to compress its depths while keeping the shoreline fixed. Use manual depth restores your requested scale. See the layered map guide for fabrication steps.
Sources and coverage notes
These are the survey datasets integrated into TopoStack. Survey dates, resolutions and water-level references vary. NOAA’s Lake Superior grid is a draft; Swiss lake-floor elevations use an approximate alignment to the lake surface. Source credits and applied depth scaling are included in exports.
For British Columbia, the open bathymetric map collection provides PDF depth maps for reference. These maps are not yet available as lake-floor geometry in the studio.