How Can You Identify Natural Funnels on a Map?

Understanding Topographic Maps

When studying a topographic map, look for areas where water sources, like rivers or streams, intersect with terrain features that block their path. These water sources often create natural funnels, as animals are forced to move through a narrow area to access food or water sources. A good example is a river flowing through a canyon or gorge, where the river’s path creates a funnel-shaped passage.

Identifying Key Features

To identify natural funnels on a map, use the following techniques:

• Look for areas where a water source, such as a river or stream, is forced to change direction due to a terrain feature like a mountain or ridge.
• Identify trails or game paths that intersect with these water sources, as animals are likely to follow these paths.
• Use contour lines to identify areas where the terrain is changing, such as a steep slope or a valley. These areas are often where natural funnels will be located.
• Pay attention to the scale of the map. Larger maps will show more detail, making it easier to identify natural funnels.

Locating Funnel Areas

Use the following techniques to locate funnel areas on a map:

• Measure the distance between the funnel area and a known animal habitat or water source. A funnel area that is within 1-2 miles of a known animal habitat is more likely to be used by animals.
• Look for areas where multiple game paths intersect. These areas are often where animals are forced to move through a narrow passage, creating a natural funnel.
• Use the map’s scale to identify the size and shape of the funnel area. A funnel area that is at least 1/4 mile wide and 1/2 mile long is more likely to be used by animals.