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Last modified
7/28/2009 2:27:40 PM
Creation date
10/1/2006 2:12:30 PM
Metadata
Fields
Template:
Weather Modification
Contract/Permit #
#90-2
Applicant
North American Weather Consultants
Project Name
Grand Mesa
Title
Advisory Committee Review
Date
2/22/1990
Weather Modification - Doc Type
Application
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<br />~ <br />:-)' <br /> <br />-=:j <br /> <br />intended target area. Normally not all generators <br />will be operated at any given time. <br /> <br />',-'~''--~:--'' ' <br /> <br />certain storm characteristics will be monitored to <br />determine whether a storm, or a portion of a <br />storm, is to be seeded. criteria that will be <br />considered will include cloud top temperature, <br />lower-level atmospheric stability, height of cloud <br />base, and airmass temperature. General seeding <br />guidelines will call for seeding if the cloud top <br />temperatures are expected to be from -10' to- <br />30'C, there are no low-level stable atmospheric <br />layers which would restrict the vertical <br />dispersion of the seeding material, cloud base <br />heights that are below the crest of the mountains <br />which comprise the intended target area, and <br />lower-level temperatures which are cold enough to <br />promote silver iodide nucleation (-S'C or colder) <br />to which --the silver iodide-_ material - can -reasonably <br />be expected to travel, <br /> <br />Question: d and e: The intended target area serves as an <br />important winter snowpack accumulation area. <br />As the snowpack melts during the spring and <br />summer months it provides surface runoff and <br />underground water recharge. This water is <br />utilized by a number of different water users <br />through streamflow diversions, storage in <br />reservoirs and subsequent dispensing to water <br />users, and recharging of ground water. The <br />objective of the proposed operation is to <br />increase the availability of these natural <br />water supplies originating in the target <br />area. Enhanced water supplies can be- <br />utilized in areas adjacent to the target area <br />to provide additional agricultural and <br />municipal water supplies. The anticipated <br />level of enhancement of the naturally <br />occurring precipitation in the target area <br />during the period of operation is on the <br />order of a 10 to 15 percent increase. The <br />enhancement in surface streamflow is expected <br />to be in the same range as the increase in <br />precipitation. <br /> <br />Increases in precipitation in the target area <br />would provide additional water supplies to <br />the resident flora. Supplemental streamflow <br />should provide an enhanced environment for <br />the resident fish populations. <br /> <br />The program should improve recreational <br />opportunities in the target area, increase <br />agricultural production from the surroundings <br />
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