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<br />0:0.0609 <br /> <br />WATER-ASSOCIATED OUTDOOR RECREATION <br /> <br />Water Access <br /> <br />Tourism is a major industry in the subbasin, requiring sound planning and <br /> <br />management. Natural resources need protection for continued attraction. The <br /> <br />greatest increase in recreation demand will occur in drainages 1002 and 1003 of <br /> <br />the subbasin. The activities with the greatest need for additional facilities, <br /> <br />access or lands are hunting, developed camping, boating, and nonurban swimming. <br /> <br />The locations expecting the greatest increase in recreation demand are lands <br /> <br />adjacent to Yellowstone Park and the Missouri River segment from Townsend to <br /> <br />Cascade, Montana. <br /> <br />WATER QUALITY <br /> <br />Nonpoint Source Pollution <br /> <br />Nonpoint pollution due to erosion, acid mine drainage, saline seeps, <br /> <br />improper grazing and logging, and irrigation return flows impair the quality of <br /> <br />many subbasin streams. problems occur on most streams and tributaries <br /> <br />throughout the subbasin with one of the severest on Muddy Creek. Approximately <br /> <br />200,000 tons of soil is eroded and transported to the Sun River every year from <br /> <br />the lower Muddy Creek drainage. <br /> <br />Point Source Pollution <br /> <br />Most of the point source discharges are from municipal wastewater <br /> <br />treatment facilities, specifically primary treatment lagoons. This is an <br /> <br />economically suitable treatment method for small Montana communities. <br /> <br />The most noteworthy problems include: <br /> <br />b. <br /> <br />East Gallatin River by the Bozeman sewage treatment plant; <br />prickley Pear Creek by the National Cylinder Gas Company, <br />Hillbrook Nursing Home, Kaiser Cement and Gypsum Company, and <br />Helena Municipal Treatment Plant; <br />Midvale Creek by East Glacier Park and East Glacier Lodge. <br /> <br />a. <br /> <br />c. <br /> <br />~ <br />, <br /> <br />H-S <br />