8 principles for harvesting water
Both large- and small-scale techniques follow the same principles to create the most effective ways of capturing water. With a little time and effort, any site can be transformed into a sustainable oasis using the following eight principles.
Start with observing the site
Carefully observe where the rainwater flows, how it flows, and what is already working on your land. This will save you a lot of time and effort.
Start at the top
Allow gravity to assist you. Begin by working on the highest area of your property to control run-off before it gains speed and volume.
Slower is better
Try to slow the flow of rainwater as much as possible and spread it across your property rather than allowing it to run off your land.
Green is good
Try to cover bare soil with plants. Plant roots loosen the soil, allowing easier filtration of water into the soil.
Keep it simple
Use harvesting techniques that you can install easily and won’t require much effort to fix if damaged. Installing numerous small harvesting techniques rather than one large project allows for better infiltration of the water.
The more the better
In locations where abundant water tends to flow, plan an overflow route. Run-off should be harvested rather than directed off the site. Choose from a series of check dams and basins, French drains, depressions, and swales and berms.
Use multifunctional techniques
This is the most advanced principle but could add the most impact to a property. Turn berms and check dams into walking paths with bridges. Select plants that can provide shade and cool your home, or provide food.
Continually critique your landscape
It’s important always to observe rainfall and run-off on your property, even after the initial harvesting techniques are installed. Keep track of what the water is doing and how harvesting can be improved.