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<br />habitat or population of endangered fish. It is assumed that the project will have <br />positive effects in that there will be less stream disturbance from irrigation with the <br />project in place. <br /> <br />HUMAN/CULTURAL RESOURCES - There are no known cultural resources in the <br />areas of construction therefore no impacts are anticipated. <br /> <br />HUMAN/ECONOMICS - The project will provide a more efficient irrigation delivery <br />system for the producers. It will also ensure a reliable water supply with less <br />maintenance costs. The combined impact should be a more cost effective irrigation <br />delivery system. <br /> <br />TWO DIVERSIONS & MARSHAL DITCH EXPANSION (Alternative 3) <br /> <br />This alternative is an attempt to reduce project costs by eliminating ditch railroad <br />crossings. It eliminates one railroad crossing included in the TWO DIVERSION <br />alternative but requires the Marshal Roberts to be enlarged for a greater distance. It <br />will also requires approximately 1,000 feet of new ditch to carry Williams ditch water. <br /> <br />Components: <br /> <br />The following list of major component extents are preliminary estimates. (2-Diversions, <br />5,300 ft of new ditch, 1,800 ft. of concrete lined ditch, 18,000 ft. of ditch enlargement - <br />capacities up to 138 cfs.) In addition to these improvements there would be a need for <br />several railroad/road crossings, utility crossings, and water control structures. <br /> <br />Costs: $3.258,000 <br /> <br />Effects: <br /> <br />SOIL RESOURCE - Streambank erosion and entrenchment will be reduced to the <br />same degree as with the ONE DIVERSION approach. <br /> <br />SURFACE WATER - The amount of sediment loading from the project area will be <br />reduced to approximately the same, e~tent as with the ONE DIVERSION alternative. <br /> <br />WETLANDS - As a result of building the new ditch wetlands may be created. Where <br />ditch segments are abandoned the wetlands are likely to disappear. In the cases where <br />increased volumes will be carried, associated wetlands may increase in size. Not net <br />loss of function or value is foreseen. <br /> <br />WATER QUANTITY - With the planned system improvements in place there will not be <br />a problem being able to divert the agricultural producers decreed water. The improved <br />system will also eliminate some seepage losses presently occurring. <br /> <br />PLANTS/RIPARIAN HABITAT - With the extension and expansion of the Marshal <br />Roberts ditch, this alternative has a higher potential to destroy habitat than alternative <br />two. <br /> <br />Hayden 16 <br />