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<br />~ <br />C) <br />co <br /><:.u <br /> <br /> (14001 13 <br /> (10,3001 14 Castle Creek <br /> (12,8001 5 Maroon Creek <br /> (32,7001 I. <br /> (11,3001 19 <br /> Ii; <br /> . <br /> ii: <br /> 141.0001 20 <br /> Ruedl <br /> Reseruolr <br />Frylngpan 21 22 River 23 <br /> (1700) (17001 167001 <br /> <br />EXPLANA TION <br /> <br />,,'3 SAMPLING SITE AND NUMBER <br />ITABLE 2 AND FIGURE 31 <br /> <br />114001 SALT LOAD, IN TONS PER YEAR <br /> <br /> <br />~ <br />& 24 Crystal Rluer <br />~ 137,4001 <br />'< <br />o <br />o <br />'" <br /> <br />1183,0001 25 <br /> <br />Figure 7.--Drainage system and salt load: Roaring Fork River subbasin. <br /> <br />Dissolved-solids concentration 'in the Fryingpan River upstream from the <br />Ruedi Reservoir, (site 21) was 86 mg/L, while below Ruedi Reservoir, (site 22) <br />dissolved-solids concentration was 242 mg/L. Flow in the Fryingpan River is <br />controlled by Ruedi Reservoir. Normally, surface runoff impounded in a <br />reservoir has a lower dissolved-solids concentration than the ground water; <br />however, Ruedi Reservoir is in areas of evaporite deposits that may account <br />for the larger dissolved-solids concentration in the river downstream from the <br />reservoir: Dissolved-solids concentration adjusted for effects of reservoir <br />storage was about 190 mg/L at Basalt (site 23). <br /> <br />Dissolved-solids concentration was 452 mg/L in the Crystal River <br />(site 24). Seepage and runoff from marine shales and evaporite deposits are <br />probably the principal sources of salinity in the Crystal River. A water- <br />quality station is located on the Crystal River near the sampling site (site <br />24). Average dissolved-solids concentration was 441 mg/L, and flow was <br />60 ft3/s at this station during December, January, and February of water year <br />1977. The measured dissolved-solids concentration of 452 mg/L was only about <br /> <br />25 <br />