How to Read Contour Lines: The Hunter's Secret Map Code

Have you ever looked at a hunting map and seen all those wavy brown lines? They might look confusing at first. But once you learn what they mean, it's like having X-ray vision for the land.

These lines are called contour lines. And they're about to become your new best friend.

---

What Are Contour Lines?

Contour lines show you the shape of the land. Each line connects all the spots that are at the same height.

Think of it like this: Imagine you're standing in a bathtub as it fills with water. The water line goes all around the tub at the same level, right? That's exactly what one contour line does. It shows you everywhere that's at that same height.

---

The Golden Rule: Spacing = Steepness

Here's the most important thing to remember:

Why does this matter for hunting? Animals (like people) prefer easy travel. They'll walk gentle slopes over steep climbs when they can. Understanding this helps you predict where they'll move.

---

Reading the Numbers

See those numbers on some of the lines? Those tell you the elevation—how high above sea level that line is.

If one line says 1,000 feet and the next line up says 1,020 feet, that means the land rises 20 feet between those two lines.

Most hunting maps use 20-foot intervals. That means each line represents a 20-foot change in height.

---

Finding Ridges (High Ground)

When contour lines form a pattern that looks like a "U" or "V" shape pointing downhill, you've found a ridge. A ridge is a long, high piece of land.

Ridges are like highways for deer and other animals. They love to travel along ridges because they can see what's below them on both sides.

Pro Tip: Set up on a ridge and you might see animals moving along it at dawn or dusk.

---

Finding Valleys (Low Ground)

When contour lines form a pattern that looks like a "U" or "V" shape pointing uphill, you've found a valley or draw. This is low ground between two higher areas.

Animals often travel through valleys because:

• There's usually water down there
• They're hidden from view
• It's easier to walk (less climbing)

---

Finding Saddles (The Secret Passages)

A saddle is a low spot between two peaks or hills. On a map, it looks like an hourglass shape in the contour lines.

Saddles are GOLD for hunters. Here's why:

• Animals use them as shortcuts to cross ridges
• They're easier to climb than steep hillsides
• They're natural travel corridors
• Deer and elk funnel through them

If you find a saddle on your map, mark it. That's where you want to scout.

---

Finding Water

Look for contour lines that form a tight "V" shape pointing uphill. That's usually a drainage—a small stream or creek.

Water = animals. It's that simple.

Follow those V-shaped patterns on your map and you'll find:

• Creeks
• Springs
• Wet areas where animals drink

---

How to Use This for Hunting

Now let's put it all together. Here's how to plan a hunt using contour lines:

1. Find the Thick Stuff (Bedding Areas)

Look for areas with lots of close contour lines on north-facing slopes. These steep, shady areas often have thicker vegetation. That's where animals bed down during the day.

North-facing slopes:

• Stay cooler in summer
• Hold snow longer in winter
• Grow thicker cover
• Provide security for bedding deer

2. Find the Easy Routes (Travel Corridors)

Look for saddles and gentle slopes (wide-spaced lines) between bedding areas and feeding areas. Animals take the easy path, just like we do.

They'll walk an extra 100 yards to avoid a steep climb. Use this to your advantage.

3. Find Ambush Points (Pinch Points)

Look for spots where:

• A saddle narrows down (forces animals through a tight spot)
• Multiple drainages meet (several trails come together)
• A ridge has a narrow point (animals must cross there)
• Terrain forces animals into a funnel

Set up your stand or blind at these pinch points—places where animals are forced to travel through a narrow area.

---

Practice Makes Perfect

Don't worry if this feels hard at first. It takes practice.

Here's a fun way to learn:

1. Look at your map and find an interesting feature (a ridge, valley, or saddle)
2. Actually go there in real life
3. Look around and see if what you see matches what the map showed

Do this a few times and it'll click. Soon you'll be able to look at any map and picture exactly what the land looks like.

---

The Apps That Make It Easy

You don't need to carry paper maps anymore. These phone apps show contour lines and let you mark spots:

They all show contour lines in color and let you zoom in really close. Some even show 3D views of the terrain so you can "fly through" your hunting area before you go.

---

Real-World Example: Planning a Deer Hunt

Let's walk through an actual scenario:

The Setup: You have permission to hunt a 200-acre property you've never seen before.

Step 1 - Open the map: Fire up onX Hunt and find the property.

Step 2 - Identify terrain features:

• Spot a ridge running north-south through the property
• Notice a saddle about halfway down the ridge
• See several drainages with tight V-shapes (creeks)
• Find a north-facing slope with tight contours (thick bedding area)

Step 3 - Connect the dots:

• The thick north-facing slope is probably where deer bed during the day
• There's a field (feeding area) on the south end of the property
• The saddle provides an easy route from bedding to feeding
• Mark the saddle as your primary setup location

Step 4 - Scout it:

• Visit the property and walk to the saddle
• Find three well-used trails coming through the saddle
• Confirm thick bedding area above on north slope
• Set up stand 20 yards downwind of the main trail

Result: You've used contour lines to identify a pinch point without ever setting foot on the property first. You scouted smarter, not harder.

---

Your Homework

Before your next hunt:

1. Open your hunting area on a map app
2. Find three ridges, three valleys, and one saddle
3. Mark them on your phone
4. Go check them out in real life

Once you see how the lines match the real land, you'll never hunt the same way again.

---

Advanced Tip: Use Slope Shading

Most map apps can show slope shading or slope angle.

This colors the map based on how steep the terrain is:

• Green = flat or gentle (easy walking)
• Yellow = moderate slope
• Red = steep (difficult)

This makes it even easier to spot travel routes (green/yellow) vs. bedding areas (red/yellow on north slopes).

---

Common Mistakes Beginners Make

Mistake #1: Ignoring Wind Direction

You found the perfect saddle on the map. You set up there. But the wind blows your scent right into the trail. Game over.

Fix: Always plan setups with wind in mind. Some spots are only good for certain wind directions.

Mistake #2: Trusting Old Maps

Terrain doesn't change much, but land use does. That open field on your map might be a housing development now.

Fix: Use satellite imagery to verify what you see on the topo map is still accurate.

Mistake #3: Not Accounting for Thick Cover

Just because there's a nice gentle slope doesn't mean deer use it—if it's thick with multiflora rose, they'll avoid it.

Fix: Always scout in person to confirm what the map suggests.

---

The Bottom Line

Contour lines might look like random squiggles. But they're actually a secret code that shows you:

Learn to read them, and you'll fill your tag more often. It's that simple.

Now get out there and start reading those maps!

---

Related Hunting Strategy Guides

Master complementary navigation and strategy skills:

• Understanding GPS Accuracy for Hunters — Know GPS limitations when navigating terrain features
• Property Lines & Trespassing Guide — Navigate boundaries safely with map skills
• Deer Bedding Areas Maps Guide — Use topo maps to identify prime bedding locations
• Hunting Emergency Systems Guide — Safety planning with GPS and map coordinates

Track Your Scouting in Ember

Use the Ember app to:

• Pin locations you identify on topo maps
• Log trail camera locations at key terrain features
• Track which setups produce sightings
• Share your discoveries with group members

The more you connect map analysis with real-world results, the better you'll get at predicting animal movement.

---

Download This Guide

Want a printable cheat sheet for the field?

Contour Line Quick Reference:

Print this out and keep it in your pack until it's second nature.

---

Ready to put this knowledge to work? Download Ember and start mapping your hunting strategy today.

Frequently asked questions

What do contour lines on a topo map mean for hunting?

Each contour line connects points at the same elevation. Lines packed close together mark steep ground animals tend to avoid, while widely spaced lines mark gentle slopes deer prefer for travel.

How do I find a saddle on a topographic map?

Look for an hourglass shape in the contour lines between two peaks or hills. Saddles are low crossing points that funnel deer and elk, so mark them as priority scouting spots.

How do I tell a ridge from a valley on a topo map?

A U or V shape pointing downhill toward lower elevation numbers is a ridge. A V pointing uphill is a valley, draw, or creek drainage, and the tighter the V, the steeper the drainage.

Where do deer bed according to a topo map?

Look for tightly spaced contour lines on north-facing slopes. These steep, shady areas hold thicker cover and stay cooler, which is where deer tend to bed during the day.