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18 Water-Quality Characteristics and Ground-Water Quantity of the Fraser River Watershed, Grand County, Colorado, 1998-2001 <br />Colorado et <br />1 105°52'3 ?./ <br />106° J Granby 1 / <br />1 1 105°45' <br />v <br />• (?? 4hberry n <br />N <br />a <br />40°? 7075 2 7278 7 764 td Creek <br />Tabern <br />Pole ree 9 <br />6 <br />1,0271 69 523 J <br />0 <br />553-- <br />P l <br />Crooked Fraser _ <br />\ ,17 - 2 <br />a1,560 <br />>\ 1,790 ND o <br />Winter <br />G Park / <br />39°52'30 Morrat vT- <br />v <br />a <br />Vasquez <br />• • J WaterTunnel <br />Ohti ? ra0 'v' <br />a/ ? .0??• <br />Base modified from U.S. Geological Survey 0 2 4 6MILES <br />County map series 1:50,000, 1978 I <br />Grand County sheets 2 and 4 <br />0 2 4 6 KILOMETERS <br />EXPLANATION <br />Site number 9? <br />669 Median radon-222 concentration <br />ND No data <br />Figure 7. Median radon-222 concentrations for wells in the Fraser River watershed, <br />1998-99. <br />2001 are listed in the annual USGS water-data reports for these Field Properties and Suspended Sediment <br />years (Crowfoot and others, 2000, 2001, and 2002). A statistical <br />summary of selected surface-water data for the site, applicable Discharge in the Fraser River at Tabernash ranged from a <br />State of Colorado instream water-quality standards, and NWQL minimum of 31.0 ft3/s to a maximum of 244 ft3/s for the sam- <br />reporting levels are listed in table 4. All water-quality constitu- pling period, and the median was 66.2 ft3/s (table 4). Discharge <br />ents discussed in this section are in the dissolved form except is dominated by snowmelt runoff during spring. Smaller <br />for total phosphorus, particulate organic carbon, and fecal discharges at other times of the year reflect the gradual melting <br />coliform bacteria. of annual snowfields, precipitation events (primarily