Laserfiche WebLink
<br />t <br />. <br />. <br />t <br />. <br />t <br />. <br />t <br />t <br />t <br />t <br />t <br />t <br />t <br />t <br />t <br />t <br />, <br />. <br />a <br />a <br />a <br />a <br />. <br />. <br />. <br />. <br />. <br />I <br />. <br />, <br />I <br />I <br />I <br />. <br />, <br />. <br /> <br />2,0 PROJECT DESIG:'I' <br /> <br />2.1 Backeround <br /> <br />The operational procedures utilized for the Gunnison River cloud seeding <br />program are the same as those that have pro\'en effeclive in more than 25 years of cloud <br />seeding in the mountains of Utah. Results from these operational programs have <br />consistently indicated increases in wintertime precipitation and snowpack in the target <br /> <br />areas (Griffith. et ai, 1991; 1997). <br /> <br />2.2 Seedabilil\' Criteria <br /> <br />NA we has followed a policy called selective seeding. which is the most efficient <br />and cost-effective method. and provides the most beneficial results. Selective seeding <br />means that seeding is only conducted during specific time periods. and in specific <br />locations. where it is likely to be effective. This decision is based on several criteria <br />which detemline the seedabililY of the stonn. These criteria deal with the nature of the <br />atmosphere (temperature. stability. \..;ind 00\1,'. and moisture content) both in and beIO\..; <br />the clouds. and are presented in Table 1-1. Use of this focused seeding methodology has <br />)ielded consistently favorable results at very attractive benefit/cost ratios, <br /> <br />1.J Suspension Criteria <br /> <br />As required in the cloud seeding pennit granted by the Colorado Water <br />Conservation Board. seeding operations shall not be undenaken. or shall be suspended. <br />if: <br /> <br />A. The ~ational Weather Service forecasts a stonn to produce unusually heavy <br />precipitation that could contribute to a\'alanches or unusually severe weather conditions <br />in the project area, <br /> <br />, <br />