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. . . 1138 An alternative to using an exchange for delivering water to upstream points is the construction of conveyance facilities (large diameter pipelines and pumping facilities) and delivering the water directly to areas such as northern El Paso County and Douglas County. Such a direct delivery would ordinarily be limited to only the consumptive use portion (that portion returned to the atmosphere and not available to other appropriators) of the water divertable by Amity. For this discussion, consumptive use refers to total historic consumptive credit (crop consumptive use and evaporation consumptive use). 3. EXCHANGE POTENTIAL The Amity had an average exchange potential between the years 1979 and 1983 of 157,877 acre feet at the Boone headgate, which is the area in which Lake Meredith system diverts its water into the Colorado Canal, and into Lake Meredith. Since Amity has only maximum potential of 59,574 acre feet that they could transfer upstream, this would mean that during that time period they could have diverted all of their water into Lake Meredith. The total exchange potential would also have been 157,877 acre feet at Pueblo, Colorado, which would give Amity the potential to transfer their water right into the Pueblo area and pipe it up the Front Range to other storage vessels, The total exchange potential into Pueblo Reservoir during that time period would be 142,400 acre feet. This would give Amity the potential to get all of their water right into Pueblo Reservoir and pipe out of this as previously mentioned. The potential of transferring it up the Fountain to Colorado Springs would be 46,766 acre feet, so a good part of this could be transferred up the Fountain if the storage were available in the Colorado Springs area. This would significantly decrease the pumping costs if this water could be handled in this manner. Amity's compact water in John Martin Reservoir is also exchangeable upstream. This exchange was not computed on a daily basis. The reason for this is that storage water can be released and exchanged upstream at any time that exchange potential exists. Since the exchange of this storage water is not limited to the times that it was taken historically, it should be more easily exchanged upstream than the other sources analyzed here. Consequently, the conclusions concerning upstream exchange also apply to compact water, except that such an exchange would be further enhanced. Exchange percentages approaching 100% would not be unreasonable for the compact water on the Arkansas River main stream. 4. DIRECT DELIVERY There appear to be only two prospective scenarios for direct delivery of water. One, which was discussed earlier, is the downstream delivery by gravity, either by way of the Amity Canal or -5-