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<br />\- ':J'~ ~ <br /> <br />. Altemative Inoels ojflood plain regulation (CE and USDA) Annual upstream and <br />downstream flood damages will be estimated for 1985 and 2000 under the <br />alternative assumptions of (a) extrapolation of current trends in flood plain <br />regulation beyond 1975, and (b) the maximum practicable level of Ilood plain <br />regulation. Some effects on economic activity of increased flood plain regulation <br />will also be described. <br /> <br />,(. <br /> <br />Agency Responsible: Indicated in description above. <br /> <br />.' <br /> <br />Activity Two: Vall/metric Adequacy Analysis on Variations. (April 1975). Volu- <br />metric adequacy analyses (as described in Phase II, Activity One) will be developed for the <br />alternative water use projections derived in Activity One of this phase and compared with <br />the volumetric adequacy analysis based on central-case assumptions. <br /> <br />Agency Responsible: WRC staff. <br /> <br />Activitv Three: Impact Analysis on Variations. (May 1975) The major economic, <br />social, and environmental impacts of the variations from central-case conditions will be <br />analyzed. As it is not possible to analyze all of the primary and secondary impacts of each <br />variation, a list of primary impact variables for each variation from central-case conditions <br />has been selected for analysis. The variables on which impacts will be evaluated for each <br />variation from central-case conditions are identified below together with the agency primarily <br />responsible for each variation. Other items such as water quality will be considered in each <br />variation to the extent that information is available. <br /> <br />Variation frolll central case <br /> <br />I. Coal gasification-liquefaction and <br />oil shale development (USDQ <br /> <br />I. <br /> <br />2. Increased agricultural exports <br />(USDA with USDI) <br /> <br />'~ <br /> <br />3. Patterns of land use for agriculture <br />(USDA) <br /> <br />. <br /> <br />Analysis variables <br /> <br />Water supply <br />Synthetic natural gas output <br />Regional employment <br />Land use <br />Fish and wildlife habitat <br /> <br />Water supply <br />Agriculture production <br />Agriculture employment and income <br />Land use <br />Soil loss <br />Wet soil conversion <br />Fish and wildlife habitat <br /> <br />Water supply <br />Cost of crop production <br />Soil loss <br />Wet soil conversion <br />Fish and wildlife habitat <br /> <br />19 <br />