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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />1482 <br /> <br />diversion structures were estimated to be 50 feet long for the Mancos <br />River. <br /> <br />It may not be practical to build a massive diversion to serve a small <br /> <br /> <br />parcel. A farmer farming a small parcel with low flow requirements <br /> <br /> <br />would probably have a simple temporary diversion which could be <br /> <br /> <br />nothing more than a berm graded across the river with a backhoe or <br /> <br /> <br />dozer to form a shallow pool for his pump to take suction from if <br /> <br /> <br />flows in the stream are low. If stream flows were too large to allow <br /> <br /> <br />installation of a temporary diversion, a low flow could most likely <br /> <br /> <br />be pumped without a diversion. <br /> <br />The berm may require regrading several times during the irrigation <br /> <br /> <br />season. However, the overall cost of such diversions is minimal. <br /> <br /> <br />The decision on the type and size of diversion will vary with each <br /> <br /> <br />parcel and would require extensive review in the field. Therefore, <br /> <br /> <br />in order to simplify the analysis it is assumed that no special <br /> <br /> <br />diversion structure will be required for parcels of 30 acres or less. <br /> <br />In ~ases where several parcels can be served from one diversion and <br /> <br /> <br />the combined acreage is over 30 acres, the cost of the diversion is <br /> <br /> <br />divided between the parcels in proportion to parcel acreage. This <br /> <br /> <br />approach is believed to be conservative (in favor of generating PIA) <br /> <br /> <br />and realistic for this type of analysis. <br /> <br />7 <br />