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<br />. . , <br /> <br />. 0006tl~ <br /> <br />Lake level fluctuations at Fort Peck and Canyon Ferry Reservoirs affect <br /> <br />fish propagation. <br /> <br />IRRIGATION <br /> <br />Water Shortage (Ground; Surface) <br />Irrigated acreage is increasing in this subbasin especially along the Milk <br /> <br />River where competition for water use is intense. <br /> <br />Older surface systems throughout the subbasin need rehabilitation to <br /> <br />increase efficiencies in water use. However, water users are often unable to <br /> <br />finance the improvements. <br /> <br />Late season irrigation water shortages are common. The Big HOle, Milk, <br /> <br />and Musselshell Rivers ofte~ experience these shortages. <br /> <br />LAND CONSERVATION AND MANAGEMENT <br /> <br />Upland Soil Erosion <br /> <br />Excess water application, improper tillage practices; and overgrazing <br /> <br />contribute to wind and water erosion and sedimentation problems in this <br /> <br />subbasin. By 1990, it is estimated that there will still be 15,000,000 acres <br /> <br />in need of land conservation. <br /> <br />MUNICIPAL, INDUSTRIAL, AND RURAL DOMESTIC WATER SUPPLY <br />, <br /> <br />Municipal <br /> <br />There are ten communities in the subbasin with population over 3,000 which <br /> <br />will need same type of improvement for water supply and/or quality within the <br /> <br />next 20 years. The communities and their need are displayed in Table 1 that <br /> <br />follows. There are 132 communities (some unincorporated) that have or <br /> <br />anticipate problems of water supply or quality before year 2000. The present <br /> <br />problems are associated with storage, treatment, and/or distribution facilities <br /> <br />for which the smaller communities lack funds. <br /> <br />H-3 <br />