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<br />grazing. An additional 28 million acres of Federal lands <br /> <br />are grazed. <br />Croplands comprise nearly 104 million acres, or 31.6 <br />percent of all lands basinwide, but the proportion ranges <br />fro111 as high as 71 percent in the Middle Missouri <br />Subbasin to as low as 7 percent in the Yellowstone <br />Subbasin. Currently. the irrigated lands aggregate 7.4 <br />million acres, representing about 6.9 million acres of <br />cropland and about 0.5 million in irrigated pastures. <br />Forest and woodlands total about 30 million acres. <br />These lands contribute commercial timber products. <br />livestock forage. wildlife habitat, and recreation. <br />Transportation. urban expansion, and other uses now <br />require 7.7 million acres of land. The mineral industry <br />has surface operation areas of only 33,000 acres. but <br />with underground workings this figure would be higher. <br />Military uses include several military reservations and <br /> <br />installations of national importance, including Fort <br />Leonard Wood, Fort Riley, Fort Leavenworth, install- <br />ations of the Strategic Air Command, and others. <br />Water areas. aggregating 3.8 million acres, represent <br />but 1.2 percent of the basin area, but are an exceedingly <br />important resource in terms of the function of rivers, <br />lakes, reservoirs, farm ponds, and other water bodies in <br />the regional economy. <br />Aside from the land-use pattern, the ownership and <br />management of basin lands provide perspective for their <br />private and public values as resources. While in Federal <br />ownership a t the time of the Louisiana Purchase, <br />through sales. land grants, and various special and <br />limited homestead acts passed by the Congress. most of <br />the land passed to private and state ownership. Current <br />ownership is illustrated by figure 8. <br /> <br />FIGURE 8 <br />LAND AND WATER OWNERSHIP <br />~\ <br /> <br /> <br />CANADA --- <br /> <br />----~~-- ~:'~~T:-mEs\ <br />\ <br />\ <br />--~ <br />'~ <br /> <br />-=- )/ <br /> <br />LEGEND <br /> <br /> <br />SOi.ORAIH) <br /> <br />PRIVATE,STATE <br />AND COUNTY <br /> <br />PERCENT OF BASIN TOT AL <br /> <br />14 <br /> <br />1 UPPER MISSOURI <br />2 YELLOWSTONE <br />3 WESTERN DAKOTA <br />4EASTERN DAKOTA <br /> <br />~ <br /> <br />~ <br /> <br />, <br /> <br />t <br /> <br />SCALE 1/11.500.000 <br />'00 <br /> <br />'00 <br />~ <br /> <br />APPRO~IM.o.TE SCALE IN MILE 5 <br /> <br />I>[IN NE50TA <br /> <br />~:.~"NSA.S <br /> <br />g\ <br /> <br />---~r <br /> <br />, <br /> <br />~--~ 15G{)1llRI <br />-- - L--~.:-:.:..:------ <br /> <br />SUBBASINS <br /> <br />5 PLATTE-NIOBRARA <br />6 MIDDLE MISSOURI <br />7 KANSAS <br />8 LOWER MISSOURI <br />