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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 /> <br />SECTIGNTWO <br /> <br />Exlsdng Condidons Of Stormwater Management <br /> <br />stormwater handling system. These irrigation ditches pervade the valley, cross natural drainage <br />paths, combining and mixing drainage water with irrigation water. In addition, the boundaries of <br />cities and irrigation districts are inconsistent with the natural configuration of drainage basins <br />and washes. The municipalities therefore need to coordinate many of their drainage activities <br />with the District. <br /> <br />In addition to the District, six irrigation companies own and operate irrigation systems that cross <br />many of the drainages within the municipalities. The US Army Corps of Engineers, Bureau of <br />Reclamation, Bureau of Land Management, CDOT, and others are also involved in the drainage <br />activities within the municipalities. <br /> <br />Not only do the municipalities have to deal with the drainage originating within their boundaries, <br />they also have to deal with drainage from upstream areas, that include lands managed by other <br />jurisdictions such as the National Park Service and Bureau of Land Management. <br /> <br />Figure I shows the major basins in the Grand Valley and the five jurisdictions participating in <br />this study, and illustrates the eight basins that have planning studies. <br /> <br /> <br />URS <br /> <br />T:\PROJECTS\22236022_GRAND_ VALLEY\SUB_OO\6.Q]ROJ_DELlV\FINAL REPQRT\FINAL REPT REV 5.DOC\24-JUL.03\\ 2-2 <br />