TopoMiller
Changelog
See what's new in TopoMiller. We're always working to improve the experience and add new capabilities.
US County Selection
Select any of 3,100+ US counties for precise regional topographic carvings.
- Searchable dropdown with all US counties, parishes (LA), and boroughs (AK)
- County boundary data sourced from FCC geographic database
- STL exports properly clipped to county polygon boundaries
- PNG heightmap exports include SVG boundary vector for CNC software clipping
- ZIP bundle contains PNG, SVG boundary, and README with workflow instructions
US State & Territory Selection
Select entire US states with one click for full-state topographic carvings.
- Quick selection dropdown for all 48 contiguous US states plus Hawaii islands
- Optimized boundary data preserves geographic features like the Texas panhandle
- Smart defaults: Fit to Size 300mm, 10mm relief height for CNC bed compatibility
- Individual Hawaiian island selection (Maui, Oahu, Big Island, etc.)
Iowa Lake Bathymetry
Added 157 Iowa lakes with detailed underwater terrain data from Iowa DNR.
- Bathymetric contour data from Iowa Department of Natural Resources Division of Fish & Wildlife
- Includes West Okoboji Lake (41.8m) - Iowa's deepest natural lake
- Popular fishing destinations: Big Creek Lake, Clear Lake, Storm Lake, Lake Macbride
- Unique Atlantic Quarry Ponds with depths up to 24m
- Total lake coverage now 5,242 lakes worldwide
Texas Lake Bathymetry
Added 44 Texas lakes with detailed underwater terrain data from Texas Water Development Board.
- Bathymetric survey data from Texas Water Development Board (TWDB) Hydrographic Survey Program
- Includes major reservoirs: Lake Texoma, Lewisville Lake, Lake Travis, E.V. Spence Reservoir
- Popular fishing destinations: Lake Arlington, Lake Austin, Canyon Lake, Medina Lake
- Highland Lakes coverage: Lake LBJ, Lake Buchanan, Inks Lake, Lake Marble Falls
- Total lake coverage now 5,085 lakes worldwide
Washington Lake Bathymetry
Added 240 Washington lakes with detailed underwater terrain data from WA Dept. of Ecology.
- Bathymetric contour data from Washington Department of Ecology
- Includes Lake Chelan (426.7m) - 3rd deepest lake in the United States
- Olympic National Park coverage: Lake Crescent, Ozette Lake
- Cascade Range lakes: Lake Wenatchee, Sullivan Lake, Lake Stevens
- Total lake coverage now 5,041 lakes worldwide
Ohio Lake Bathymetry
Added 133 Ohio lakes with detailed underwater terrain data from Ohio DNR.
- Bathymetric contour data from Ohio Department of Natural Resources (Division of Wildlife)
- Includes Caesar Creek Lake (33.5m), East Fork Lake (30.4m), and Alum Creek Lake (18.3m)
- Coverage of popular fishing destinations: Hoover Reservoir, Portage Lakes, Berlin Lake
- Total lake coverage now 4,801 lakes worldwide
Michigan & Wisconsin Lake Bathymetry
Added 513 Michigan lakes and 6 Wisconsin lakes with detailed underwater terrain data.
- Michigan bathymetric data from MCGI (Michigan Center for Geographic Information)
- Includes famous Michigan lakes: Torch Lake, Higgins Lake, Elk Lake, Glen Lake, and Black Lake
- Wisconsin coverage from NTL-LTER research dataset (Lake Mendota, Lake Wingra, etc.)
- Fixed edge artifacts and improved depth rendering quality
- Total lake coverage now 4,731 lakes worldwide
Minnesota Lake Bathymetry - Land of 10,000 Lakes
Added 2,000 Minnesota lakes with detailed underwater terrain data.
- Comprehensive bathymetric data from Minnesota Department of Natural Resources
- Includes famous lakes: Lake Minnetonka (30.5m), Mille Lacs, Leech Lake, and Lake Itasca (source of Mississippi)
- Features deep mine pit lakes: Mahnomen (152m), Sabin Mine (137m), Portsmouth Mine (107m)
- Total lake coverage now 4,212 lakes worldwide
Alabama Public Fishing Lakes
Added 19 Alabama public fishing lakes with bathymetry data.
- Bathymetric contour data from Alabama DCNR (Dept of Conservation and Natural Resources)
- Includes Walker County (13.1m max depth), DeKalb County (11.4m), and Bibb County (10.3m) lakes
- Coverage of all 19 public fishing lakes with available depth data
- Total lake coverage now 2,215 lakes worldwide
Montana Lake Bathymetry
Added 874 Montana lakes with detailed underwater terrain data.
- High-resolution bathymetric data from Montana Fish, Wildlife & Parks
- Includes Flathead Lake (largest natural freshwater lake west of the Mississippi)
- Coverage of Tally Lake (Montana's deepest at 137m), St. Mary's Lake, and 870+ more
- Total lake coverage now 2,196 lakes worldwide
Ocean Bathymetry
Create 3D carvings of ocean floors, underwater canyons, trenches, and seamounts.
- Global ocean coverage using SRTM15+ bathymetry data (~450m resolution)
- Automatic detection when your selection extends into the ocean
- Seamless blending between land elevation and ocean depth
- Supports features from continental shelves to the Mariana Trench (-11,000m)
Lake Bathymetry
Underwater terrain data for 1,300+ lakes worldwide.
- Surveyed depth data from Bathybase global database
- Automatic lake detection when selecting regions
- Includes major lakes like Crater Lake, Lake Tahoe, and the Great Lakes
- View available lakes in the Lake Bathymetry documentation
Enhanced Map Visualization
Upgraded to Google Maps with hybrid satellite/terrain view.
- Better terrain visualization for selecting regions
- Improved location search with autocomplete
- Clearer topographic detail when zoomed in
Community Projects Feature
Share your topography projects with the community and discover creations from other users
- Browse and download community-shared projects
- Publish your own projects for others to use
- Prevents spam by blocking unmodified republishing
Circle Region Selection
Select circular regions in addition to rectangles.
- Perfect for round CNC projects and medallions
- Maintains aspect ratio for consistent output
High-Resolution US Elevation Data
1-10 meter resolution USGS elevation data for US regions.
- Direct access to USGS 3DEP Cloud Optimized GeoTIFF files
- Significantly improved detail for CNC carvings
- Automatic fallback to 30m global data for non-US regions
Worldwide Elevation Data Coverage
Access high-quality elevation data for any location on Earth using AW3D30 global dataset
- Create topography models from anywhere in the world
- 30-meter resolution global coverage
- Seamless integration with existing elevation sources
Enhanced Region Selection Tools
New polygon and circle selection tools for more precise region definition
- Draw custom polygon regions for complex shapes
- Create perfect circular regions
- Real-time validation for size limits (100km dimension, 10,000 km² area)
Improved STL File Quality
Generated STL files now have closed mesh bases, making them ready for 3D printing and CNC milling
- Solid base added to all terrain models
- Better compatibility with CAD software
- Fixed coordinate system for CNC applications
Expanded High-Resolution Coverage
1-meter resolution elevation data now available for larger areas
- Coverage expanded from 25 km² to 100 km² (10km × 10km)
- Improved stability and reliability
- Enhanced performance for large regions
Community Projects
Save and share your topographic projects.
- Save projects with custom names and descriptions
- Share your carvings with the TopoMiller community
- Browse and discover projects from other makers
Have feedback?
We'd love to hear from you! Use the feedback button in the app or reach out to let us know what features you'd like to see next.