Topographic Maps of North Carolina: USGS Quads and Your Own Custom Maps
Everything you need to know about topographic maps in North Carolina, 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 North Carolina 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.
North Carolina's official topographic maps
The U.S. Geological Survey publishes the topographic map series for North Carolina, 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 North Carolina — 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 its terrain — commonly 40 ft in North Carolina’s mountains and 10 or 20 ft on the Piedmont and Coastal Plain. 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 mountain map 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 walls of Linville Gorge. Lines spread far apart mean gentle ground, like the farmland of the Coastal Plain.
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, 200 ft, 500 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 a full-resolution lidar survey 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 survey shows slides, grading and river changes that an older sheet may not — and an older survey 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 |
| North Carolina 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 North Carolina 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 mountains.
- 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 North Carolina
Hiking and backpacking
Topo maps are the main navigation tool on the trail, from the Great Smoky Mountains to Linville Gorge. 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 Outer Banks to the Blue Ridge.
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 North Carolina State Plane, US survey feet (EPSG:2264).
- 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 on this site come from the USGS 3D Elevation Program (3DEP) seamless bare-earth model: 3.3 ft per pixel where a full-resolution lidar survey has been flown, about 9.8 ft per pixel where the model is built from older lidar, and about 33 ft per pixel elsewhere, with elevations above NAVD 88. The data is in the public domain. North Carolina’s statewide lidar is published through NC OneMap and carried by USGS 3DEP. USGS 3DEP serves lidar-derived elevation across North Carolina: 3.3 ft per pixel where a full-resolution lidar survey exists, about 9.8 ft per pixel where the model is built from older lidar. Every custom map here is generated from this model. More from the USGS 3D Elevation Program and NC OneMap’s elevation data.
Frequently asked questions
Are topographic maps free in North Carolina?
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 its terrain — commonly 40 ft in North Carolina’s mountains and 10 or 20 ft on the Piedmont and Coastal Plain. 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 North Carolina 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. County parcel boundaries are the assessor's GIS data compiled by NC OneMap, not surveys, and the county that published each parcel is named with it. The aerial basemap is from Esri and follows Esri's terms; it is not included in downloads.
What contour interval should I use?
It depends on your purpose and the terrain. The tool offers 1, 2, 5, 10, 20, 40, 100, 200, 500 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 steep country such as the Black Mountains or the Blue Ridge Escarpment, where finer lines merge into a solid band.
How accurate are custom topographic maps?
Accuracy is inherited from the USGS 3DEP source and the lidar project behind it, not asserted by this tool. Where a full-resolution lidar survey exists the model is 3.3 ft per pixel and its vertical accuracy is that project’s, as USGS publishes it; where the model is built from older lidar it is about 9.8 ft per pixel; outside both the seamless DEM is about 33 ft per pixel and far coarser. The lidar coverage checker names the survey, its year and its quality level at any point, and every download states what share of its area fell outside the full-resolution lidar work units. Values are bare-earth elevations above NAVD 88 from a digital elevation model — they exclude buildings and tree canopy and are not a substitute for a surveyed elevation where a legal or engineering decision depends on it.
Do custom topo maps cover all of North Carolina?
Yes. The tool works anywhere in the state. USGS 3DEP serves lidar-derived elevation across North Carolina: 3.3 ft per pixel where a full-resolution lidar survey exists, about 9.8 ft per pixel where the model is built from older lidar. Where no lidar work unit exists at all, 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) — The national program behind the elevation data: what has been flown, the specifications it was flown to, and the seamless bare-earth DEM that every elevation on this site comes from, with 3.3 ft cells where lidar exists and about 33 ft elsewhere.
- 3DEP elevation image service — The seamless DEM as a public image service, exported as GeoTIFF for any area. The terrain tiles, downloads, contours and terrain statistics on this site are read from here.
- The National Map Downloader — USGS’s own download tool for 3DEP tiles, lidar point clouds and the topographic map series, with no area limit.
- 3DEP elevation index — Where each resolution of 3DEP data exists, and which lidar work unit covers a point. This site uses it for the coverage checker and to report the share of a download that fell outside 3.3 ft lidar.
- NC OneMap elevation — North Carolina’s own elevation page: the statewide lidar-derived DEM and its derivatives, published by the NC Center for Geographic Information and Analysis, and how to download them.
- NC OneMap parcels — The statewide compilation of the county assessors’ GIS parcels that the Property tool reads: what it contains, how often each county updates, and the county-by-county download.
Search, basemaps and terms
- Geographic Names Information System (GNIS) — The federal register of place names that the search box uses for towns, peaks, lakes and streams.
- NC OneMap addresses (AddressNC) — North Carolina’s statewide address points and geocoder, used for address search.
- USGS Topo basemap — The National Map’s topographic basemap, one of the backgrounds you can switch to.
- Esri World Imagery — The aerial basemap, used under Esri’s terms. No measurement is taken from it and it is not included in downloads.
- USGS copyrights and credits — Why USGS data is in the public domain, and how USGS asks to be credited.
Related guides
- Contour lines for North Carolina — 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 North Carolina — the data behind the maps.
- Download DEM data for North Carolina — the raw elevation model.