Colorado River Municipal Water District Weather Modification Program 1971-1986by Ray Jones, Colorado River Municipal Water, District, United States,
Abstract: The Colorado River Municipal Water District (CRMWD) has sponsored a rain enhancement program on summertime convective clouds in West Texas since 1971. Silver iodide is used for cloud base seeding. The seeding rates are based on the research that has been done by the North Dakota Weather Modification Board. Parameters for seeding are based on cloud diameter, updraft, cloud tops, cloud base height and temperature, and location and movement. Cloud seeding missions average about 33 per season. Non-irrigated cotton yields for the target area Counties show a +42% departure from normal increase. Additional study results are discussed.
Subject Headings: Municipal water | Rivers and streams | Water supply | Weather modification | Water resources | Rain water | Parameters (statistics) | Temperature effects | Colorado River | North America | United States | North Dakota | Texas
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