Collecting water directly from the environment can supplement your supply, reduce dependency on utilities, and improve overall preparedness. Whether you’re harvesting rainwater, setting up field-expedient catchment, or storing natural runoff, a well-designed collection system is a smart addition to any water plan.
This guide covers gear and methods for capturing and storing water for later use—ranging from emergency setups to permanent installations.
Types of Water Collection Systems
Rainwater Harvesting Systems
Designed to collect water from rooftops and direct it into storage containers. Often include gutters, diverters, and first-flush filters to improve quality and reduce debris.
Portable Catchment Tarps
Lightweight, packable tarps designed to funnel rain into containers. Useful in backcountry setups, bug-out bags, or temporary camps.
Funnel-Based Collection Kits
Field kits that allow for water collection from vegetation, rock runoff, or improvised surfaces. Helpful in low-resource environments.
Cisterns & Storage Tanks
Large-capacity systems for long-term rainwater or runoff storage. Often used in homesteads, cabins, or off-grid buildings.
Collapsible Collection Basins
Compact, foldable units that can be deployed to capture rain, dew, or stream runoff. Easy to store and deploy quickly.
Roof Gutter Systems
Integrated or add-on gutter systems for channeling water from roofs to collection barrels or tanks. Can be retrofitted to most existing structures.
Key Features to Look For
- Debris Management: Mesh screens, filters, or diverters to keep leaves and contaminants out
- Food-Grade Materials: Safe for use if water may later be treated and consumed
- Overflow Handling: Systems designed to manage heavy rainfall without flooding
- Portability (for field use): Lightweight and compact setups for rapid deployment
- Capacity Scaling: Ability to expand or connect multiple units as needed
Use Cases
- Off-Grid Cabins or Homesteads
Supplement or replace municipal water with stored rainwater - Emergency Preparedness
Quickly collect water before or during supply interruptions - Backcountry and Survival Kits
Capture rain or dew in areas with no reliable water source - Garden and Irrigation Use
Reuse natural water for non-potable applications
Water collection systems are a force multiplier for any preparedness plan. Combined with proper filtration or purification, they can provide a steady and renewable water source for a wide range of conditions.