Quick answer: a paper topographic map and a baseplate compass let you navigate when a phone dies or loses signal, which is why navigation tops the Ten Essentials list used by The Mountaineers and the National Park Service. Learn to read contour lines (lines close together mean steep ground), orient the map so it matches the land, take a bearing from the map and follow it on the ground. Adjust for magnetic declination, the angle between true north and magnetic north, which you can look up with NOAA’s online declination calculator. Practice at home and on familiar trails before relying on these skills.
Phones and GPS units have made navigation much easier, but they also fail: batteries die in the cold, screens crack and maps do not always download. A paper map and a compass need no batteries and no signal. They also give you a bigger picture of the terrain than a small screen, which helps you make better decisions about routes, campsites and when to turn around.
This guide covers the core skills every camper can learn in an afternoon. It is part of our camping safety guide, which covers preparation, weather, wildlife and emergencies.
Sources: U.S. Geological Survey (USGS) topographic map symbols and US Topo map information; NOAA National Centers for Environmental Information (NCEI) magnetic declination calculator and World Magnetic Model; National Park Service Ten Essentials guidance; The Mountaineers, “Mountaineering: The Freedom of the Hills” (Ten Essentials); U.S. Forest Service and BLM map resources. Checked October 2026.
Why Paper Navigation Still Matters
Navigation tops the Ten Essentials, a list of safety items first published by The Mountaineers in the 1930s and now recommended in some form by the National Park Service. The modern list treats navigation as a system: map, compass, and optionally GPS, altimeter or phone with downloaded maps.
The point is redundancy. Electronic tools are excellent, but a paper map and compass work when everything else fails. Even if you mostly use an app, knowing how to read a map makes you better at using that app.
What You Need
A topographic map
A topographic, or topo, map shows the shape of the land using contour lines, along with trails, roads, streams, lakes and landmarks. Sources include:
- USGS topographic maps, including the historic 7.5-minute quadrangle series at a scale of 1:24,000 and the current US Topo series, available free to download from the USGS.
- National forest and BLM maps, including motor vehicle use maps that show legal roads for dispersed camping.
- Park maps and commercial trail maps, often printed on waterproof paper.
Print or buy a map that covers your whole route plus a margin around it, and carry it in a waterproof bag.
A baseplate compass
A baseplate compass, sometimes called an orienteering compass, is the most useful style for map work. Look for:
- A clear baseplate with a ruler and direction-of-travel arrow
- A rotating bezel marked in degrees from 0 to 360
- An orienting arrow and orienting lines inside the housing
- A liquid-filled housing so the needle settles quickly
- Adjustable declination, a helpful feature for beginners
Parts of a Baseplate Compass
| Part | What it does |
|---|---|
| Baseplate | Clear plastic base with rulers for measuring map distance |
| Direction-of-travel arrow | Points the way you will walk |
| Rotating bezel (dial) | Marked 0 to 360 degrees; sets your bearing |
| Magnetic needle | Red end points to magnetic north |
| Orienting arrow | Outline arrow inside the housing; align with the needle |
| Orienting lines | Parallel lines in the housing; align with map north-south lines |
| Index line | Where you read the bearing on the bezel |
A common memory aid for following a bearing is “put red in the shed”: turn your body until the red end of the needle sits inside the orienting arrow.
Reading a Topographic Map
Contour lines
Contour lines connect points of equal elevation. The contour interval, printed in the map legend, tells you the vertical distance between lines. On many USGS 7.5-minute maps, intervals are 20 or 40 feet, though they vary.
- Lines close together mean steep terrain.
- Lines far apart mean gentle slopes or flat ground.
- Closed circles mark hilltops or depressions.
- V shapes pointing uphill usually show valleys or drainages; streams often follow them.
- V or U shapes pointing downhill usually show ridges or spurs.
Map scale
Scale shows how map distance relates to ground distance. At 1:24,000, one inch on the map equals 24,000 inches, or 2,000 feet, on the ground. Use the scale bar on the map and your compass ruler to measure distances.
Symbols and colors
USGS maps use standard colors: blue for water, green for vegetation, brown for contour lines and black or red for roads, trails and boundaries. The USGS publishes a full guide to topographic map symbols.
Understanding Declination
A compass needle points to magnetic north, not true north. Most maps are drawn to true north. The angle between the two is called magnetic declination, and it varies by location and changes slowly over time.
According to NOAA’s NCEI, declination in the contiguous United States ranges from east declination in the West to west declination in the Northeast, and it is close to zero along a line running through the middle of the country. NOAA’s online magnetic field calculator gives the current declination for any location.
How to adjust
- With an adjustable compass, set the declination once using the small screw or key, and the bezel will account for it automatically.
- Without adjustment, add or subtract the declination manually. A common rule is “east is least, west is best”: when converting a map bearing to a compass bearing, subtract east declination and add west declination.
Older maps print a declination diagram in the margin, but that value may be out of date. Check NOAA’s calculator for current figures.
Orienting the Map
Orienting the map means turning it so north on the map matches north on the ground. This makes it easier to match landmarks to map features.
- Set the compass bezel to 0 degrees (north), adjusted for declination.
- Place the compass on the map with the edge of the baseplate along a north-south line.
- Turn the map and compass together until the red end of the needle sits inside the orienting arrow.
- Look around. Hills, lakes and valleys should now line up with what you see on the map.
Taking a Bearing From the Map
A bearing is a direction measured in degrees from north. To travel from where you are to a destination on the map:
- Place the edge of the baseplate on the map so it connects your location and your destination, with the direction-of-travel arrow pointing toward the destination.
- Rotate the bezel until the orienting lines are parallel with the map’s north-south lines, with the orienting arrow pointing to map north.
- Read the bearing at the index line.
- Adjust for declination if your compass does not do it automatically.
Following a Bearing on the Ground
- Hold the compass level in front of you with the direction-of-travel arrow pointing straight ahead.
- Turn your body until the red needle sits inside the orienting arrow (“red in the shed”).
- Pick a landmark in line with the direction-of-travel arrow, such as a distinctive tree or rock.
- Walk to it, then repeat with a new landmark.
Leapfrogging between landmarks keeps you on track better than staring at the compass while walking.
Estimating Distance With Pace Counting
Many navigators count paces to estimate distance traveled. Measure how many double steps (each time the same foot touches the ground) you take in 100 meters or 100 yards on flat ground at home. On trail, terrain, packs and slopes change your pace, so treat it as an estimate.
Navigating When You Are Unsure
- Stop as soon as you feel unsure. Continuing usually makes things worse.
- Orient your map and look for big landmarks: peaks, lakes, ridges and rivers.
- Retrace your steps to the last place you were sure of.
- Use handrails, linear features such as trails, streams and ridges that lead toward your destination.
- Use catching features, big landmarks beyond your goal that tell you when you have gone too far.
If you are truly lost, the standard advice from park and search-and-rescue agencies is to stay put, stay warm and signal for help. Our guide on what to do if you get lost while camping explains the steps.
Combining Paper and Electronic Navigation
GPS units, phone apps and satellite messengers are valuable tools. To use them well:
- Download offline maps before you lose signal.
- Carry a backup battery and keep the phone warm in cold weather. Our guide to portable power for camping covers battery banks.
- Use airplane mode to save battery while still using GPS.
- Mark your car and campsite as waypoints.
- Check the paper map regularly to keep the big picture.
Many apps display your GPS coordinates. Learning to find those coordinates on a paper map, using the latitude and longitude or UTM grid printed on USGS maps, gives you a powerful backup.
Navigating to a Dispersed Campsite
Map skills are not only for hikers. Finding a dispersed campsite on national forest or BLM land often means following unsigned dirt roads, and phone maps do not always show which roads are open to vehicles.
The U.S. Forest Service publishes Motor Vehicle Use Maps (MVUMs) for each national forest, showing the roads and trails where motor vehicles are allowed and, in many cases, where camping is permitted alongside them. These maps are available free from the Forest Service as printed maps at ranger stations and as downloadable files that work in some map apps. BLM field offices publish similar travel management maps.
Before you go, compare the MVUM with a topographic map. The topo map shows the terrain, such as whether a road climbs a steep ridge or follows a valley that may flood, while the MVUM shows whether the road is legal to drive. Mark a few possible campsites, note road numbers at each junction and write down the mileage between turns, since road signs are often missing. Our guide to dispersed camping rules explains stay limits and other regulations.
Practicing Your Skills
- Start in a park or neighborhood with a simple map.
- Try an orienteering course. Many regions have orienteering clubs with beginner-friendly events.
- Practice on familiar trails, comparing the map to the ground at each junction.
- Take a course through a local outdoor club, outfitter or community program.
Skills fade without practice. Spend a few minutes navigating on every trip, even when the trail is obvious.
Teaching Kids to Navigate
Children enjoy map and compass games. Have them find north, orient a simple park map or follow a short bearing to a hidden treat. Teach them what to do if they are separated from the group: stay in one place, stay visible and blow a whistle. The Hug-a-Tree program, developed after a child was lost in California in 1981, teaches children to stay put by hugging a tree until found.
Solo and Off-Trail Travel
Navigation skills become more important when camping alone or traveling off trail. Leave a detailed trip plan with someone at home, including your route and return time. Our guide to solo camping safety covers more precautions.
Common Mistakes
- Relying only on a phone with no backup.
- Ignoring declination, which can send you far off course over long distances.
- Holding the compass near metal, such as a car, knife or phone, which can deflect the needle.
- Not checking the map at trail junctions.
- Using an outdated or low-detail map.
- Continuing when lost instead of stopping to reassess.
Frequently Asked Questions
Do I really need a map and compass if I have a phone?
It is a strong backup. Phones can lose battery or signal. Navigation is the first item on the Ten Essentials list recommended by the NPS and The Mountaineers.
What is magnetic declination?
Declination is the angle between true north, which maps use, and magnetic north, where a compass points. NOAA’s online calculator gives current values for any location.
What do contour lines show?
Contour lines connect points of equal elevation. Close lines mean steep terrain, and widely spaced lines mean gentle slopes.
What kind of compass is best for beginners?
A baseplate compass with a rotating bezel, clear base, orienting lines and adjustable declination is the easiest to use with a map.
Where can I get topographic maps?
The USGS offers free downloadable US Topo maps. Land agencies, parks and map publishers also offer trail and recreation maps.
What does "red in the shed" mean?
It is a memory aid for following a bearing: turn until the red end of the compass needle sits inside the orienting arrow.
