Topographic Maps of Wisconsin: USGS Quads and Your Own Custom Maps
Everything you need to know about topographic maps in Wisconsin, from reading the contour lines on a USGS quad to generating your own topo map from USGS lidar.
Create a custom topographic map
Choose any area in Wisconsin and your own contour interval, and see the result on the map for free. Downloading it needs a pass.
Generate a custom topo map →What is a topographic map?
A topographic map shows the three-dimensional shape of the land on a flat sheet. Unlike a road map or an aerial photo, it uses contour lines — lines joining points of equal elevation — to show the height of peaks, the depth of valleys and the steepness of slopes.
A full topographic map also shows rivers, lakes and coastline, vegetation, roads and trails, buildings and place names. The spacing of the contours carries the shape: lines packed close together mean steep ground; lines spread far apart mean gentle or flat ground.
Wisconsin's official topographic maps
The U.S. Geological Survey publishes the topographic map series for Wisconsin, as for every state. They are the standard reference for navigation, recreation, emergency services and land management.
US Topo
US Topo is the current USGS topographic map series, built from The National Map's data and downloadable from The National Map Downloader.
Historical topographic maps
USGS's topoView lets you browse and download the older topographic quads for any place in Wisconsin — useful for seeing how a place looked before a road, a dam or a subdivision.
The limits of a fixed sheet
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.
A fixed interval is the right choice for a map series and far too coarse for a building site, a field or a drainage problem: a whole house lot can sit between two quad contours without a single line crossing it.
How to read a topographic map
Reading a topo map comes down to understanding contour lines. For more, see the contour lines guide.
Contour interval
The contour interval is the vertical distance between neighboring lines. Walk uphill from one line to the next and you have gained one interval of elevation. A small interval shows fine detail; a large one keeps a map of hill country readable.
Index contours
To make maps easier to read, every fifth contour is usually drawn thicker and labeled with its elevation. These index contours let you read heights at a glance and count the lines between them.
Steep versus gentle slopes
Tightly packed contours mean a large change in elevation over a short distance — a steep slope such as the bluffs above the Mississippi. Lines spread far apart mean gentle ground, like the Central Sands.
Terrain features
V-shaped contours pointing uphill mark a valley or stream; V-shapes pointing downhill mark a ridge or spur. Concentric closed loops mark a summit; loops with tick marks pointing inward mark a depression. Contours bunched into a cliff band and then spreading out show a bench.
Why make a custom topographic map?
- Your interval: 1 ft, 2 ft, 5 ft, 10 ft, 20 ft, 40 ft, 100 ft. Fine intervals reveal ditches, terrace edges and old slides that a published sheet cannot.
- Lidar detail: contours are generated from the USGS 3DEP model, 3.3 ft per pixel where lidar exists.
- Any area: up to 7.5 miles per side in one request — a valley, a farm or a single lot, with no sheet edges.
- Formats for your workflow: PDF for print, GeoJSON for GIS, DXF for CAD, KML for Google Earth, SVG for design.
- As at the flight date: lidar records the ground on the day it was flown, so a recent project shows slides, grading and river changes that an older sheet may not — and an older project will miss recent ones. Check the lidar coverage page.
- Free to view: generate and view as many maps as you like; downloading the files needs a pass.
Custom maps versus the official sources
| Where to go | What it gives you | Best for |
|---|---|---|
| US Topo (USGS) | The current published map sheets with names, roads and trails | Navigation, trip planning, an official sheet to print |
| topoView (USGS) | Historical topographic quads | How a place looked decades ago |
| Offline map apps | Topo maps cached on a phone with GPS position | Being in the field with no cell coverage |
| Wisconsin Elevation Tools | Contours you generate at any interval from 1 ft, from USGS 3DEP lidar, as editable vectors or a print-ready PDF | Site work, design, farm and property planning, 3D models |
This site is not a replacement for the official map. If you want the recognized sheet with trails, names and the grid your GPS references, use US Topo. The map here also offers the USGS Topo basemap as a background, so you can see the published map and your own contours together.
How to make a custom topo map
- Open the map. It opens on the whole of Wisconsin with aerial, topographic and relief basemaps.
- Find your area. Search a place name or address, or pan and zoom.
- Select the area. Frame the map, draw a box, or click a parcel with the Property tool; up to 7.5 miles per side.
- Set the contour interval. 1 or 2 ft for site work, 5 or 10 ft for a farm or a hike, 20 ft or more for steep hill country.
- Choose the format. PDF for print, GeoJSON for GIS, DXF for CAD, KML for Google Earth, SVG for design.
- Download. The contours are generated from the 3DEP model and exported in your chosen format.
Ready to build your own topo map?
Pick an area, choose an interval and see the contours on the map before you export.
Common uses for topographic maps in Wisconsin
Hiking and backpacking
Topo maps are the main navigation tool on the trail, from the Ice Age Trail to the bluffs of the Driftless Area. Contours tell you where the climbs are before you start. Pair them with an elevation profile.
Land development and building
Builders, engineers and architects use fine contours to plan a building pad, grading and drainage, and to prepare for a building permit conversation with the county planning department.
Farming and forestry
Contours guide field layout, irrigation, erosion control, fence lines and roads across farm and timber ground.
Education
A custom map of the local area makes contour lines and landforms concrete for students, from the Lake Michigan shore to the Driftless Area.
Emergency services
Search and rescue and fire crews use topo maps to judge access, terrain difficulty and landing zones.
Environment and conservation
Ecologists use contours to understand drainage, microclimates and habitat; GeoJSON exports drop straight into their GIS.
Formats
- GeoJSON — for QGIS, ArcGIS and web maps.
- DXF — for AutoCAD and Civil 3D, in Wisconsin State Plane, US survey feet.
- PDF — a print-ready map sheet labeled in feet with a scale bar.
- KML — for Google Earth.
- SVG — for Illustrator, Inkscape and laser cutting.
About the data
Ground elevations come from the USGS 3D Elevation Program (3DEP) seamless bare-earth model, with elevations above NAVD 88. Source cells are 3.3 ft per pixel in the finest work units, with about 9.8 ft per pixel and 33 ft per pixel sources elsewhere. USGS elevation data is public domain. 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. Every custom map here is generated from this model. More from the USGS 3D Elevation Program and Wisconsin elevation resources.
Frequently asked questions
Are topographic maps free in Wisconsin?
USGS topographic maps are public domain and free to download from The National Map and USGS topoView. On this site every tool is free to use on the map, so you can make and view a custom topo map at any interval at no cost; downloading the files needs a pass: US$29 for 24 hours, US$99 for 30 days or US$399 for 12 months.
What is the difference between a USGS topo quad and a custom topo map?
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. A USGS sheet also carries names, roads, trails and land cover that a contour export does not.
Can I use Wisconsin topo maps 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.
What contour interval should I use?
It depends on your purpose and the terrain. The tool offers 1, 2, 5, 10, 20, 40, 100 ft. Use 1 or 2 ft for a house lot, a driveway or site work, 5 or 10 ft for acreage, a farm or a day hike, and 20 ft or more for closely spaced lines on the steeper hillsides of the Driftless Area, where finer lines merge into a solid band.
How accurate are custom topographic maps?
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.
Do custom topo maps cover all of Wisconsin?
Yes. The tool works anywhere in the state. 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 USGS model falls back to coarser 1/3 arc-second data and fine intervals mean less.
Data sources and further reading
The contours on a custom topo map are generated from public USGS elevation data. If you want the official map sheets or the raw elevation model, these are the places they live.
Primary sources
- USGS 3D Elevation Program (3DEP) seamless DEM — 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.
- 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.
- Brown County regional lidar digital surface model — 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.
- 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.
- USGS Geographic Names Information System (GNIS) — Wisconsin place names for search, including towns, peaks, lakes, streams and other named features.
- 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.
Search, basemaps and terms
- USGS copyrights and credits — The USGS public-domain policy and requested credits. Other publishers’ layers have their own terms.
Related guides
- Contour lines for Wisconsin — generating and downloading contours.
- Download contours as PDF — printable maps for the field.
- Download contours as GeoJSON — contours for GIS.
- Download contours as DXF — contours for CAD.
- Hiking elevation profiles — the climb along a trail.
- Lidar data for Wisconsin — the data behind the maps.
- Download DEM data for Wisconsin — the raw elevation model.