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Last modified
7/28/2009 2:40:35 PM
Creation date
4/24/2008 2:52:55 PM
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Weather Modification
Title
The Feasibility of Enhancing Streamflow in the Silver Iodide in the Sevier River Basin of Utah bt Seeding Winter Mountain Clouds
Date
12/1/1991
Weather Modification - Doc Type
Report
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<br />A major positive factor for the Wasatch Plateau is that the Utah/NOAA Cooperative Program plans to <br />continue to operate there. The Utah/NOAA Program "piggy-backs" research onto the existing operational <br />seeding program with the T&D of ground-released AgI being the current main emphasis. The <br />Utah/NOAA Program does not have sufficient resources to carry out demonstration program described in <br />sections 6 and 7. But it would be far more efficient and cost effective to combine facilities and even goals <br />then to attempt to operate two separate experimental areas. <br /> <br />The Cedar Breaks region also has all-weather highways with Highway 143 following the upwind edge of <br />the plateau for about 8 miles, most of which is in the Cedar Break National Monument. The logistics of <br />this region also should be very good. However, there are three actual or potential drawbacks to the region <br />as compared with the Wasatch Plateau. First, stonn frequency is likely somewhat less as the Cedar Breaks <br />region is about 135 miles further south. Figure 3-10 indicated a tendency for snowpack to decrease from <br />north to south in the Sevier Basin. That must result from more frequent storm passages, or more snowfall <br />per stonn, or both, as one moves northward. Second, and more serious, the presence of the National <br />Monument and the Ashdown Gorge Wilderness Area, both along the westerly portion of the region, would <br />likely preclude operation of key equipment. While seeding generators could be located on a plateau to <br />the southwest, it would be desirable to release seeding materials and operate other instrumentation to the <br />west as well. Third, the Wasatch Plateau is a long north-south barrier that might be suitable for the highly <br />efficient randomized crossover design in future seeding experimentation. <br /> <br />An advantage of the Cedar Breaks region is that any water produced during the experimental phases would <br />drain into the headwaters of the Sevier River. Water produced by seeding on the Wasatch Plateau would <br />partially drain into the Sevier Drainage but most would be expected to drain into the Colorado River. It <br />is again emphasized that the main purpose of the proposed demonstration program is to validate and <br />improve the technology of cloud seeding for later operation application in the region. <br /> <br />When all important factors are considered the Wasatch Plateau appears to be the optimum area for cloud <br />seeding research in the Sevier River Basin. Accordingly, a demonstration program was designed for that <br />area as described in the following two sections. <br /> <br />45 <br />
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