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PERMFILE71889
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PERMFILE71889
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Last modified
8/24/2016 11:21:20 PM
Creation date
11/21/2007 12:00:31 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1988112
IBM Index Class Name
Permit File
Doc Date
11/8/1988
Section_Exhibit Name
EXHIBIT K CLIMATOLOGY
Media Type
D
Archive
No
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<br />K.3 Preci~tation <br />Mean annual and monthly precipitation amounts were estimated <br />for the site from regional precipitation maps and the long-term <br />precipitation records at San Luis (1891-1923) and the SCS Culebra <br />#2 Snow Course (1951-1985). The precipitation gradient between the <br />San Luis (7,900 ft msl) and Culebra #2 Stations (10,500 ft msl) was <br />derived as a function of elevation and a precipitation estimate of <br />the site was determined from this gradient. As a result of this <br />analysis, the site's estimated mean annual precipitation was <br />determined to be approximately 15.25 inches. This estimated value <br />was then compared with the mean annual regional precipitation maps <br />and was found to be in reasonable agreement. The mean monthly <br />estimated precipitation values are given in Table K.3-1 for the San <br />Luis project site. <br />K.4 Snowfall <br />I The mean annual snowfall at the site was estimated to be equal <br />to approximately 58.1 inches from correlations with long-term <br />snowfall records at San Luis. Estimated mean monthly snowfall values <br />were assumed to be equal to the ratio of the mean monthly snowfall <br />to mean monthly precipitation values as recorded at San Luis, and <br />applied to the mean monthly precipitation estimates determined for <br />the site. The estimated monthly snowfall values are listed in Table <br />K.4-1. <br />K.4.1 Snow Course <br />Estimates of average monthly snow course amounts, in <br />units of snow water equivalent (SWE), were determined for the <br />site from correlations with long-term (1961-1985) snow course <br />records provided by the Soil Conservation Service at the <br />Culebra #2 Snow Course, located approximately nine miles <br />southeast of the site. Estimates of average monthly SWE were <br />determined at the site by applying the ratio of the mean <br />I <br />Y,-3 <br />
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