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2001-12-11_PERMIT FILE - C1981010A (4)
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2001-12-11_PERMIT FILE - C1981010A (4)
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Last modified
9/19/2016 10:16:42 AM
Creation date
11/26/2007 4:10:09 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981010A
IBM Index Class Name
Permit File
Doc Date
12/11/2001
Doc Name
A Review of Potential Alluvial Valley Floors & Possible Impacts
Section_Exhibit Name
APPENDIX H Section 1
Media Type
D
Archive
Yes
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The three areas deemed important to [his study are [he Yampa River, [he <br /> <br />Williams Fork River and the upland drainages of the mine plan area. <br />3,1 Yampa River Valley <br />The Yampa River Valley for subbasin) is part of [he larger Yampa River <br />basin as reported by Steele et al (1979). The geographic limits of the <br />basin and the delineation of [lie Yampa River and Little Snake River sub- <br />basin's are shown in Figure 3-1. <br />The Yampa River's headwaters occur in the high mountains of [he Park <br />Range along [he continental divide ~EXhlbit III). The drainage area of <br />[he Yampa River is approxiam[ely 3,410 square miles. <br />J <br />•~ <br />Timing of flows from [he valley demonstrate [he importance of snowmelt <br />runoff [o water yield. Figure 3-2 shows a graph of the discharge of the <br />Yampa River at Hayden and Maybell from March 1971 to January 1973. About <br />65 percent of the flow occurs in May and June with up to 97 percent <br />occurring from April to June a[ selected gaging stations within the <br />valley (Steele, et al 1979). Minimum flows occur from AugusC through <br />February. Iorns (1965) reported [hat summertime flows in screams of [he <br />basin from July through October generally include a large component of <br />groundwater discharge. <br />-4- <br />
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