About the data and the tools

Elevation and terrain data for anywhere in Wisconsin

Wisconsin Elevation Tools is a browser-based mapping tool that turns USGS 3DEP lidar elevation data for Wisconsin into contour lines, elevation profiles, slope and viewshed analysis, terrain statistics, property terrain reports and 3D-printable models — with no account, no software install and no GIS experience required.

What you can do with it

Pan to a place, draw an area or a line on the map — or click a property to use its county parcel boundary — then pick a tool. Results appear on the map and download in the format you need, or as a georeferenced aerial photo of the site for your GIS or CAD.

Property

Click a point

Queries Wisconsin’s public statewide parcel service for the parcel under the cursor and uses its boundary for supported analyses. Local gaps and missing identifiers can occur. Downloads generally cover the surrounding rectangle; only the Contour Lines panel’s vector export clips to the selected boundary.

How it works →

Property Report

Click a point

Generates a multi-page PDF terrain report for a parcel, or for an area drawn or uploaded on the map — hillshade, contours, slope and aspect breakdowns and elevation statistics — closing with a checklist of the official records the report does not cover (local assessment and planning records, FEMA flood maps, state geology, well, septic and wetlands records, and title records), each with the agency that holds it.

How it works →

Saved Properties

Select, draw or upload an area

Keeps up to five places in this browser and compares elevation, slope, winter sunlight and drainage. Export the shortlist as a JSON file.

How it works →

Find Matching Areas

Select, draw or upload an area

Combines slope, facing direction, modeled winter sunlight, wetness and room for a building pad into one filter, with presets for house sites, solar, orchards and more; any matching patch can become the area for the next tool. Terrain criteria, not a zoning or buildability assessment — check with the county.

How it works →

Contour Lines

Select, draw or upload an area

Generates topographic contours at any interval from 1 ft upward, rendered on the map and exportable as vectors.

How it works →

Slope & Aspect

Select, draw or upload an area

Computes slope steepness and the compass direction each face points, including a full aspect distribution (share of land facing N/NE/E/… plus the flat share) — the terrain measure behind building permits, excavation, solar and pasture questions.

How it works →

Sunlight

Select, draw or upload an area

Models hours of direct sun across a site on any day of the year — the shortest day, an equinox or the longest day — with shadows cast by terrain up to 1.86 mi away and, where the Brown County surface model has usable data, by trees and buildings. The default winter date is December 21. Shows when the sun first reaches the area and when it last leaves (Central time), and lets you step through the day half an hour at a time to watch the shadows move.

How it works →

Terrain Stats

Select, draw or upload an area

Summarizes minimum, maximum, mean and range of elevation across an area, plus its hypsometric (elevation frequency) distribution.

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Cut & Fill

Select, draw or upload an area

Estimates vertical cut and fill volumes to a level pad at a chosen elevation, or finds the elevation that balances the volumes. Excludes side slopes, soil swell and compaction.

How it works →

Landforms

Select, draw or upload an area

Classifies terrain into ten landforms, including ridges, valleys, hollows and flats, using an adjustable neighborhood radius.

How it works →

Object Heights

Select, draw or upload an area

Estimates heights of buildings and vegetation above bare ground in Brown County by comparing its surface model with the 3DEP bare-earth model. Not ground elevation. Buildings and vegetation are combined; cells without usable surface data are left blank; mostly steep bare ground is flagged as unreliable.

How it works →

Add Elevation

Click a point

Returns the ground elevation in feet at a single coordinate.

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Water & Drainage

Select, draw or upload an area

Two analyses on depression-filled terrain: drainage channels extracted as a Strahler-ordered stream network (exportable as GeoJSON/KML), and ponding — where water would stand once hollows fill, with depth, area and volume.

How it works →

Wetness Map

Select, draw or upload an area

Maps topographic wetness potential from slope and contributing area. Shows relative terrain-driven moisture concentration, not measured soil moisture or flood depth.

How it works →

Catchment

Click an outlet

Maps the upstream terrain draining to the clicked cell, with an adjustable search radius and a warning when the catchment reaches the loaded terrain edge or missing data.

How it works →

Viewshed

Click a point

Calculates which ground is in line of sight from an observer, within a radius of your choice: 0.5, 1, 2 and 5 miles. It allows for earth curvature and refraction, with a choice of eye height, target height, and whether trees and buildings from the regional Brown County surface model block the view — used for protecting a view, siting a house, and antenna or camera placement.

How it works →

Sightline

Tap two points

Checks whether one point is visible from another — a house site to a hilltop, a deck to the lake — and if not, where the view is first blocked and by how much, with the terrain profile and sightline drawn together.

How it works →

Elevation Profile

Draw or tap out a line

Produces a cross-section along any line, with distance, total ascent and descent, and grade — for trails, roads, driveways, pipe runs and fence lines.

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Measure

Draw or tap out a line

Measures the flat map length of a line tapped out corner by corner. For the climb and grade along a line, use Elevation Profile.

How it works →

Route Explorer

Tap two endpoints

Explores a terrain route favoring gentler grades, enforcing a maximum grade and showing its elevation profile. Exports the route as GeoJSON and the profile as CSV. Does not assess legal access or construction feasibility.

How it works →

Download Data

Select, draw or upload an area

Exports the selected area as contour vectors, a DEM raster, a georeferenced aerial photo or a 3D surface mesh.

How it works →

Elevate a File

Upload a file

Adds ground elevation from the USGS 3DEP model to the coordinates in a file you already have, replacing missing or noisy GPS altitude.

How it works →

Every tool has a page explaining what it does, how the calculation works and where it can mislead: all tool explanations.

Where the data comes from

USGS 3D Elevation Program (3DEP) seamless DEM3.3 ft per pixel in the finest work units; about 9.8 ft per pixel or 33 ft per pixel in coarser sources

The bare-earth source for terrain tiles, contours, profiles, statistics, downloads and elevation added to files. Source resolution varies: 3.3 ft per pixel in the finest work units, with older lidar and coarser seamless data elsewhere. Elevations are above NAVD 88. Public domain. Selecting a fine output grid cannot create detail missing from the source.

www.usgs.gov/3d-elevation-program

Wisconsin State Cartographer’s Office elevation and lidar resources

A directory of Wisconsin elevation and lidar resources. This site uses the USGS 3DEP index for work-unit coverage and available project metadata; it does not infer an acquisition date or accuracy for all Wisconsin from one project.

www.sco.wisc.edu/data/elevationlidar

Brown County regional lidar digital surface model1.0 ft per pixel

Optional surface data for Brown County only, including roofs and tree canopy as recorded by that source. Sunlight, Viewshed and Sightline use bare-earth fallback outside usable surface coverage; Object Heights has no supported result without surface data. The surface and 3DEP ground model can have different source dates and processing. Credit: Brown County, Wisconsin.

gis.browncountywi.gov/arcgis/rest/services/DSM2020/LiDAR2020_DSM/ImageServer?f=pjson

Wisconsin Statewide Parcel Map Initiative

Parcel boundaries aggregated from local governments by the Wisconsin State Cartographer’s Office and Wisconsin Land Information Program. The Property tool queries the public statewide service. Local gaps, outdated boundaries and missing identifiers can occur; no parcel found is not proof that land is unowned. Parcel maps are not legal surveys.

www.sco.wisc.edu/data/parcels

USGS Geographic Names Information System (GNIS)

Wisconsin place names for search, including towns, peaks, lakes, streams and other named features.

www.usgs.gov/tools/geographic-names-information-system-gnis

Basemaps — USGS Topo and Esri World Imagery

USGS Topo, shaded relief rendered from 3DEP, and Esri World Imagery (Imagery: Esri, Maxar, Earthstar Geographics, and the GIS User Community) provide map context. The aerial basemap is display-only. Downloadable aerial photos come from public-domain USGS NAIP imagery.

www.usgs.gov/programs/national-geospatial-program/national-map

Accuracy

Accuracy depends on the source project, its date and how well ground was measured; this site does not assign one accuracy figure to all Wisconsin. Source cells range from 3.3 ft per pixel in the finest work units to about 9.8 ft per pixel or 33 ft per pixel in coarser sources. Every download reports the share outside the finest lidar work units, or says coverage is unknown if the index cannot be reached. Bare-earth elevations exclude buildings and tree canopy and do not replace a surveyed elevation for legal or engineering decisions.

Licensing

USGS 3DEP elevation data and USGS maps are U.S. Government works in the public domain: you may use the results, including commercially. A credit to the USGS 3D Elevation Program is appreciated, and every file you download carries it. Wisconsin parcel boundaries are aggregated local-government data, not legal surveys; the parcel disclaimer accompanies the selection. Brown County surface data is credited separately when used. The Esri aerial basemap follows Esri’s terms and is display-only; downloadable aerial photos use USGS NAIP.

Export formats

FormatTypeTypically used for
GeoJSON .geojsonContour vectorsQGIS, web maps, Leaflet, MapLibre and scripting (WGS84)
Shapefile .shp.zipContour vectorsArcGIS and traditional GIS workflows
DXF .dxfContour vectorsAutoCAD, Civil 3D and CAD drafting (Wisconsin State Plane US survey feet, local origin)
KML .kmlContour vectorsGoogle Earth and Google Maps (WGS84)
SVG .svgContour vectorsIllustration, laser cutting and print design
PDF .pdfContour vectorsPrint-ready topographic map sheets
STL .stl3D surface3D printing a physical terrain model
OBJ .obj3D surfaceBlender, Cinema 4D and 3D rendering
GeoTIFF .tifRasterThe digital elevation model itself, for GIS and analysis (values in the file are in meters, as USGS publishes them)
Aerial photo .zip (JPEG + world file)RasterA georeferenced color aerial photo of the site (USGS NAIP, public domain, about 1 ft per pixel where available) with a world file and projection file in Web Mercator, for QGIS, ArcGIS, AutoCAD Civil 3D and other GIS or CAD; for a property it covers the parcel plus 100 ft on every side

Files you upload for elevation enrichment can be GPX, KML, GeoJSON, JSON, CSV.

What it costs and what the limits are

Price
Every tool on the map is free. Downloading the results needs a pass: US$29 for 24 hours, US$99 for 30 days or US$399 for 12 months. One-off payments in US dollars, not subscriptions. No account, no software to install.
Maximum area for contours and downloads
7.5 miles per side
Maximum area for terrain stats and elevation enrichment
3.7 miles per side
Maximum elevation profile length
15.5 miles
Smallest contour interval
1 ft
Best output resolution
3.3 ft per pixel

Output resolution scales with the size of the area you select. Exports are capped at 1,024 pixels on the longest side, with a floor of 3.3 ft per pixel — so a 900 ft building site is delivered at the full lidar detail, while a block 7.5 miles on a side is resampled to roughly 39 ft per pixel. Select a smaller area when you need fine detail.

Who uses it

Rural and acreage property buyers

Check slope, aspect, drainage and views on a parcel before committing, using the parcel boundary from the statewide parcel map rather than a guess.

Landowners, farmers, ranchers and foresters

Understand the slope and aspect of fields, pasture and timber ground, work out where water runs, and plan roads, trails and fence lines.

Architects, builders and excavation contractors

Pull site contours straight into CAD in Wisconsin State Plane US survey feet, assess a sloping lot, and understand driveway grades before a survey is commissioned.

Surveyors and GIS professionals

Get contours, DEM rasters and terrain statistics from USGS 3DEP lidar for a defined area without downloading and processing raw tiles.

Hikers, trail runners, cyclists and hunters

Generate accurate elevation profiles for a route and correct the elevation recorded by a GPS watch.

Makers, educators and hobbyists

Export any part of Wisconsin as an STL or OBJ mesh and 3D print it.

How it compares

Compared with Google Earth / Google Maps elevation

General-purpose web maps help locate a site; this site provides terrain analysis and GIS/CAD exports built from public 3DEP elevation data. Wisconsin Elevation Tools covers Wisconsin only, but reads the USGS 3DEP lidar elevation model and exports to GIS, CAD and 3D formats.

Compared with downloading raw 3DEP tiles from The National Map

The National Map is the authoritative source, but it hands you raw tiles that need GIS software and processing skill. This tool reads the same public-domain data and returns finished contours, profiles, statistics and meshes in the browser — at the cost of a size cap per request.

Compared with desktop GIS such as QGIS or ArcGIS

Desktop GIS gives more control over sources, processing and coordinate systems, and requires installation and data preparation. This tool answers the common Wisconsin terrain questions in a few clicks and exports into those same packages when deeper work is needed.

Compared with GPS Visualizer, gpx.studio and similar elevation-correction tools

Those tools are global, so they correct elevation against whatever global or regional model they hold for a place. Within Wisconsin this tool corrects against the USGS 3DEP model, 3.3 ft per pixel wherever lidar has been flown, with source detail and accuracy depending on the local project.

Compared with USGS topographic quads

Those show the published USGS topographic map series, where each map sheet uses one fixed contour interval chosen for the relief on that sheet. This tool generates contours at any interval you choose from the underlying elevation model, and lets you export them.

Frequently asked questions

Is Wisconsin Elevation Tools free?

The tools are. Every map, measurement and analysis on the site is free to use, with no account or sign-up — you can run contours, slope, drainage, viewsheds and the property report and see every result on screen. Downloading the results needs a pass: US$29 for 24 hours, US$99 for 30 days or US$399 for 12 months, one-off payments in US dollars, not subscriptions. Limits apply to the size of the area you can process in a single request.

Where does the elevation data come from?

From the USGS 3D Elevation Program (3DEP). The primary source is its seamless bare-earth elevation model: 3.3 ft per pixel in the finest lidar work units, with about 9.8 ft per pixel and 33 ft per pixel sources elsewhere. The map tools read it as terrain tiles through this site’s own routes; downloads read it directly and state what share of the area fell outside the lidar work units. The optional surface model is regional: Brown County only, with bare-earth fallback elsewhere.

How accurate is the elevation data?

Accuracy depends on the source project, its date and how well ground was measured; this site does not assign one accuracy figure to all Wisconsin. Source cells range from 3.3 ft per pixel in the finest work units to about 9.8 ft per pixel or 33 ft per pixel in coarser sources. Every download reports the share outside the finest lidar work units, or says coverage is unknown if the index cannot be reached. Bare-earth elevations exclude buildings and tree canopy and do not replace a surveyed elevation for legal or engineering decisions.

Does it cover the whole of Wisconsin?

The tool works anywhere in Wisconsin. Lidar coverage and source dates vary across Wisconsin. Check your site against the USGS 3DEP work-unit index; an unavailable lookup means coverage is unknown. Where no lidar work unit exists the seamless DEM falls back to about 33 ft per pixel and results are coarser.

What file formats can I export?

Contours export as GeoJSON, Shapefile, DXF, KML, SVG and PDF. Terrain surfaces export as STL and OBJ for 3D printing and modeling, and as GeoTIFF for the digital elevation model itself. A georeferenced aerial photo of the site downloads as a JPEG with a world file and projection file (Web Mercator, EPSG:3857) in a .zip. DXF files use the Wisconsin North, Central or South State Plane zone chosen from the selection center’s county, in US survey feet with a local origin; GeoJSON and KML are in WGS84. Files you upload for elevation enrichment can be GPX, KML, GeoJSON, JSON, CSV.

Can I download aerial imagery?

Yes, with a pass, like the other downloads. Download Data’s Aerial format delivers a georeferenced color aerial photo of your area from USGS NAIP orthoimagery, which is in the public domain: about 1 ft per pixel where available, as a JPEG with a world file and projection file in Web Mercator (EPSG:3857) that drops straight into QGIS, ArcGIS, AutoCAD Civil 3D and other GIS or CAD software. For a property it covers the parcel plus 100 ft on every side. The aerial basemap you see on the map is Esri World Imagery, which is for display only and is not what you download.

What contour interval can I use?

Any interval from 1 ft upward. That is far finer than the contours on published topographic maps, which is why the tool is useful for site-scale work such as building pads, driveways and drainage.

Do I need GIS software or any technical skill?

No. Everything runs in a normal web browser — draw an area or a line on the map, pick a tool, and download the result. Exports are provided in formats that GIS and CAD packages read if you want to take the work further.

Can I use the outputs commercially?

USGS 3DEP elevation data and USGS maps are U.S. Government works in the public domain: you may use the results, including commercially. A credit to the USGS 3D Elevation Program is appreciated, and every file you download carries it. Wisconsin parcel boundaries are aggregated local-government data, not legal surveys; the parcel disclaimer accompanies the selection. Brown County surface data is credited separately when used. The Esri aerial basemap follows Esri’s terms and is display-only; downloadable aerial photos use USGS NAIP.

How large an area can I process at once?

Contours and downloads allow up to 7.5 miles per side, terrain statistics and elevation enrichment up to 3.7 miles per side, and elevation profiles up to 15.5 miles long. Output resolution scales with the size of the area you select. Exports are capped at 1,024 pixels on the longest side, with a floor of 3.3 ft per pixel — so a 900 ft building site is delivered at the full lidar detail, while a block 7.5 miles on a side is resampled to roughly 39 ft per pixel. Select a smaller area when you need fine detail.

Can I select an actual property boundary instead of drawing a rectangle?

Yes. The Property tool queries Wisconsin’s statewide parcel service under your click. It uses the returned boundary for supported map analyses; most downloaded files cover the surrounding rectangle, while the Contour Lines panel’s GeoJSON/KML export clips to the boundary. Local gaps can occur. Parcel lines are not surveys. You can also search by address or place name.

Why does my GPS watch disagree with these elevations?

Consumer GPS elevation is derived from satellite geometry or a barometric sensor and is typically the least accurate part of a recorded track, especially in valleys and under forest canopy. Uploading the file and re-sampling it against the 3DEP elevation model replaces those values with ground elevation from lidar.

Who makes Wisconsin Elevation Tools?

Wisconsin Elevation Tools is built by MapScaping (https://mapscaping.com), which produces geospatial tools, writing and a long-running podcast about the geospatial industry.

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