The Wrangler and I learned how to build a rain barrel today at the Ecology Center, and we might be able to put it to use as early as Monday--there is rain in the forecast. Harvested rainwater is a great source of high-quality water for the garden. Here in Laguna Beach, it's an especially good means of reducing the storm water runoff that ends up in the ocean. As a general rule, a 1,000-square foot "catchment area" (i.e., your roof) yields 600 gallons of water per inch of rain. My rain barrel is a 55-gallon recycled food-grade plastic drum (with no harmful BHT), which I estimate will be filled after only an hour or so of moderate rain. Constructing the rain barrel was extremely easy. It's just a matter of having the right tools. There are only four steps: drilling a hole in the lid, which will be positioned beneath the downspout of the rain gutter; using silicone caulking to attach a piece of screen under the hole (to keep out mosquitos and debris); inserting an overflow spout; and installing a spigot for the garden hose or watering can. The Ecology Center provides more detailed instructions on its website.
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