In the Arizona desert we get about 4″ of rain a year. That isn’t much compared to many parts of the country but water run-off from a monsoon storm can produce enough water to water your garden or lawn for several weeks or months for free. See below on how to harvest rain water in Arizona.
- Observe the natural flow of the rainfall in your yard from your house and around.
- Sketch a site map and include these areas.
- Mark the pitch of the roof and flow of rain.
- Mark high and low points in your yard and where water accumulates.
- Begin with adjusting or installing gutters. Add a barrel or build a berm to direct or capture the water off of the gutter. During a 1″ rainfall, a 1,000 sq. foot roof collects about 630 gallons of water.
- Watch what happens during rainfall and make adjustments or add other elements as needed. You should direct the water away from the foundation by about 8-10 feet.
- Promote quick drainage by loosening or tilling the soil in holding areas and covering with mulch. Do not compact the soil or the water will just sit and create a breeding ground for mosquitoes.
- Add spillways to provide for overflow in order to channel the extra water elsewhere in the landscape.
- Utilize many small rainwater collection areas. These are more effective then one large basin and will drain faster to your plants.
- If you are wanting to store the water for future use during dry times, then consider installing a containment system with filtrations installed to avoid contamination and mosquitoes. This system can then be plumbed to your plants to keep them watered without costing you a dime.
Excerpts of this Article Courtesy: Phoenix Home & Garden Magazine