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<br />OOO~73 <br /> <br />Throughout the High Plains, the growing season rainfall is <br />normally about 70 percent of the region's total annual <br />precipitation. The cumulus cloud is the basic weather <br />unit producing summer rain. Successful modification of <br />this cloud type, either singly or in organized groups, is <br />most critical to water augmentation in the Plains. Because <br />much previous research has centered on the cumulus cloud, <br />technological success is realistically attainable by 1980. <br /> <br />To develop the total water augmentation potential for the <br />High Plains under a wide range of meteorological opportunities, <br />basic laboratory and field research can be logically expanded <br />in conjunction with the project. Such extension would <br />provide a base and accelerate developments for an a11- <br />weather system seeding technology by 1990 including: <br />optimum cumulus modification, upslope and winter storm <br />seeding, and frontal and cyclonic system treatment - in <br />other words, a full precipitation management capability. <br /> <br />One million dollars has been included in the fiscal year <br />1974 budget for the Bureau of Reclamation to develop and <br />initiate an experiment in the High Plains area, a research <br />effort once proposed as a joint effort between the Bureau <br />and the National Oceanic and Atmospheric Administration to <br />test the basic concepts of precipitation management. <br /> <br />3 <br />