For homeowners looking at planting trees or other crops, consider checking to see if local irrigation district water is available.

对于业主看种植树木或其他作物，考虑检查，是否对本地灌区水可用。

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They have a variety of technical articles, mostly related to irrigation and water treatment, available for free download in the "Library" section of their site.

网站的“图书馆”有各种专业文章，大部份与灌溉和水处理相关，免费下载。

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The water has to be available at critical times for irrigation.

UNESCO: 83e