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<br />Parts of the Lower Region have become centers for retirement, <br /> <br />W <br />i-" <br />en <br />CO <br /> <br />recreation, and entertainment which have boosted the regional <br />income. Economic growth is expected to be concentrated principally <br />in manufacturing, tourist, and mineral industries. Agricultural <br /> <br />production is expected to remain relatively stable with a slight <br /> <br />decrease in acres irrigated. <br /> <br />land Use and Ownership <br /> <br />Of the 140 million acres in the Service Area, 118 million are under <br />some type of Federal administration. This includes the Bureau of <br /> <br />Land Management, Forest Service, National Park Service, Indian <br />reservations, and military reservation lands. Intensive agriculture <br />can only be conducted'with irrigation. Yields per acre for'most -, <br /> <br />irrigated crops are among the highest in the Nation. Irrigated <br />acreage is expected to decrease by about 8 to 12 percent and the <br />urbanized area to increase by nearly 50 percent by year 2000. This <br /> <br />expected decrease in irrigated acreage is not a consequence of EET <br /> <br />activities in the Upper Region. <br /> <br />Fish and Wildlife Resources <br /> <br />More than 750 species of birds and mammals occur in the Lower <br /> <br />Region. The largest expanse of undisturbed habitat is located in <br />the southwestern portion of Arizona. This habitat, as well as that <br /> <br />in other parts of the Lower Region, provides domicile for pronghorn <br /> <br />8 <br />