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<br />00292lz <br /> <br />of unified plans for the management of land and water resources. An impor- <br /> <br /> <br />tant underlying premise is that the decision-making process can be enhanced <br /> <br /> <br />by the development and uSe of economic information designed specifically to <br /> <br /> <br />serve the planning process. Economic projections may.be viewed in this <br /> <br />context. <br /> <br />Experience over the past few years in river basin planning strengthens <br /> <br />our conviction that projections of economic activity and resource use should <br /> <br />be employed as a reference point for analytical work; and that the system of <br /> <br />analysis used in developing baseline projections can eventually be employed <br />to great advantage for evaluation purposes. The multiobjective evaluation <br /> <br />and the system of accounts being considered by the Water Resources Council <br /> <br />will require substantial analytical work in estimating the magnitude and <br /> <br />regional incidence of beneficial and adverse effects of alternative programs. <br /> <br />Given the with-without orientation of meaningful evaluation systems, imple- <br /> <br />mentation of the new principles and standards must rely on a set of inter- <br /> <br />regionally consistent baseline projections. <br /> <br />A second consideration that bears on the projections program is the <br /> <br />persistent request for basic data and projections for different geographic <br /> <br />delineations. We are aware, for. example, of the desire for State projections. <br /> <br />The need for land use projections by economic areas is alsor.eadily.apparent. <br /> <br />In order to satisfy these demands, the projection system must have great <br /> <br />flexibility and must employ fairly complex transformation programs. <br /> <br />Finally, we are fully aware of the need and well articulated demand for <br /> <br />alternative projections. At frequent intervals, a new "what if" type of <br /> <br />question appears on the horizon. What if we had a national policy on population <br /> <br />-3 <br /> <br />ii~ <br />I <br /> <br />. .~. - '.":. <br />;.~-.~ :.~.~.- <br />.-',.';'-"." <br />'::;':;?::':'!.~. <br /> <br /> <br />~ <br /> <br />~J: .:~_~..-~. <br /> <br />,.J~ <br /> <br />.;.;:<::". ~"- <br />:'.". '.;>~'- <br />it~t~;t~ <br />