Science Fair Projects World

Creating a Rainwater Harvesting System


Design a system to collect and store rainwater for sustainable water use.


  • Large container or barrel
  • Gutter and downspout
  • Mesh screen (to filter debris)
  • Hose or spout
  • Notebook for observations


  1. Set up the gutter and downspout to direct rainwater into the container or barrel.
  2. Place a mesh screen over the top of the container to filter out debris.
  3. Attach a hose or spout to the container for easy access to the collected rainwater.
  4. Monitor the amount of rainwater collected during rainfall events.
  5. Record the volume of water collected and any observations in your notebook.
  6. Use the collected rainwater for gardening or other purposes and monitor its effectiveness.
  7. Analyze the benefits of rainwater harvesting for water conservation and sustainability.