Leaf funnels vs. traditional gutters for rain collection?

Designing Effective Leaf Funnels

When designing a leaf funnel, consider the shape and angle of the collection surface. A leaf funnel should have a broad, shallow surface to maximize water collection and a narrow, angled outlet to direct water into a collection container. A good starting point is to create a leaf funnel with a surface area of 2-3 square feet and an outlet angle of 10-20 degrees. This design will allow you to collect significant amounts of rainwater while minimizing overflow and evaporation.

Improving Collection Efficiency

To improve the efficiency of your leaf funnel, consider incorporating a tarp or other flexible material as a collection surface. A waterproof tarp can be attached to a frame made from sticks or branches, creating a large, flat surface for collecting rainwater. By using a tarp, you can increase the surface area of your leaf funnel and improve water collection efficiency. When using a tarp, be sure to secure it tightly to prevent wind-driven rain from blowing under the surface.

Container Improvisation for Rainwater Storage

Once you’ve collected rainwater using your leaf funnel, you’ll need a container to store it in. In a survival situation, you may not have access to traditional storage containers, but you can improvise using natural materials like hollow logs, rock crevices, or woven baskets. When selecting a storage container, consider the material’s durability, size, and water resistance. A good rule of thumb is to use a container that can hold at least 1-2 gallons of water per person per day. By combining a well-designed leaf funnel with an improvised storage container, you can effectively collect and store rainwater in even the most remote survival situations.