Colorado River Municipal Water District Weather Modification Program 1971-1986

by Ray Jones, Colorado River Municipal Water, District, United States,

Document Type: Proceeding Paper

Part of: Planning Now for Irrigation and Drainage in the 21st Century


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 | Weather modification | Water resources | Rivers and streams | Water supply | Water management | Rain water | Colorado River | United States | Texas | North Dakota

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