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PRESENTATION BY MARVIN J. GREER I am going to give you a brief outline of the studies we have made and point out the conditions upon which our results are basedf then go through the results of our studies. A mimeographed copy of these results will be passed out. We then' have a lot of interesting detail to present to show how we arrived at these results. Our object is of course site selection between the Narrows and Weld County sites located 24 miles apart. The Narrows site being near Ft. Morgan, and the Weld County site being near Kersey. In ,order to make the site selection, we developed certain criteria. A sheet setting forth these criteris has also been passed out, but we would like to come back to these later. As shown on Exhibit 3, our study has five major divisions: Preparatory, Historic, Adjusted Historic, the Intermediate Time Level, and the Ultimate Time Level. The Preparatory Study included consumptive use and crop requirement, a land use study and a ground water utilization study. The Historic Study included studies of canal losses, water utilization, return flow and river gains by reaches. The Adjusted Historic Study consisted of certain adjustments that had to be made to the Historic studies in order to give us a proper base for the intermediate time level study. Since the preparatory and the adjusted historic studies are only steps in our procedure, we will only be referring to studies for three time levels in the rest of this presentation. The tremendous growth of the Denver metropolitan and other urban areas in the basin are providing and will continue to provide more water to the South Platte Valley through return , flows. The increase will be gradual through the years. It was therefore necessary for us to consider the water supply and demand at different time levels. We have selected three levels - the Historic, the Intermediate, and the Ultimate. The Intermediate Time Level was by criteria established as that time when full use will be made of the transmountain diversion decrees plus pOSSible exchanges by the decrees of Aurora, Denver and Englewood, excluding Denver's Eagle River decree. (This was excluded because of the uncertainty of the amount which might ultimately be diverted). The time of this intermediate time level was then determined to be 1990. 2