Six things you should know about rainwater harvesting in the desert
TUCSON AZ – New techniques and revival of old skills can make a little water go a long way, even here in the Catalina foothills.
1. The secret to urban water harvesting is using the many impermeable surfaces that surround us: roofs, streets, sidewalks and driveways. The runoff from those surfaces amounts to a huge amount, if properly collected and used for irrigation. In rural situations, create as many hard surfaces as you can.
2. Good collection techniques can triple the amount of water that falls, so for example, the patch of garden that now needs irrigation would get about 12 inches a year. That’s still pretty dry, but it does just lift that patch out of a “desert” definition. Diverting rainfall from your rooftop and driveways can provide quite a bit of water for irrigation.
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