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Necessary Flows for the Durango Boating Park <br />Expected flow is a key part of the design process. Necessary flows for a particular design in <br />a particular reach of the Animas River are based on a variety of factors and it was found in <br />this study that the required flow regime for certain Structures at the Durango Boating Park <br />was different than at others, as were the City's intended usage at the different Structures. <br />The flow regime for the Upper Boating Park Structures, to provide for the named <br />experiences, is listed in Table 1, shown below: <br />Flow Regime <br />The Durango Boating Park--Upper Structures <br />Dates <br />Flow Rate <br />Usage <br />Structures <br />#5, #9 <br />1 -Jan <br />185 <br />Winter training for local and visiting athletes as well as winter recreational <br />boaters <br />14 -Mar <br />1 -Ma <br />250 <br />Increased power for winter training and recreational boaters <br />31 -Ma <br />1 -A r <br />400 <br />Increased power for winter training, beginning of freestyle skills practice and <br />recreational boater tune -up <br />14 -A r <br />15-Apr <br />850 <br />Early season attraction, spring training freestyle /slalom, recreational boating <br />30-Apr <br />1 -Ma <br />1200 <br />Tourist attraction, whitewater destination, local and national level racing and <br />freestyle, attractive commercial rafting, instructional, spectators <br />14 -Ma <br />15 -Ma <br />1250 <br />Tourist attraction, whitewater tourist destination, local and national level racing <br />and freestyle, top -level commercial rafting, instructional, spectators <br />31 -May <br />1 -Jun <br />1400 <br />Marquis attraction, International eve competition, whitewater es ina ion, <br />premier commercial rafting attraction, recreational boating, instructional, <br />­ <br />14 -Jun <br />15-Jun <br />1200 <br />Tourist attraction, whitewater destination, local and national level racing and <br />freestyle, rafting, instructional, spectators <br />30 -Jun <br />1 -Jul <br />900 <br />Mid -to -late season attraction, instructional inflatible traffic, commercial rafting, <br />hard boat recreational usage and training for local athletes <br />14 -Jul <br />1 Jul <br />600 <br />Mid -to -late season attraction, instructional, inflatable traffic, commercial rafting, <br />hard boat recreational usage and training for local athletes <br />31 -Jul <br />1 -Au <br />400 <br />Late season attraction, instructional inflatable traffic, commercial rafting, hard <br />boat recreational usage and training for local athletes <br />14 -Au <br />15-Auci <br />300 <br />Hard boat recreational usage, inflatable /inner tube usage, ducky trips, <br />instructional and training for local athletes <br />30-Se <br />1 -Oct <br />185 <br />Winter training for local and visiting athletes as well as winter recreational <br />boaters <br />31 -Dec <br />Table 1. Minimum flow regime for the upper structures of the Durango Boating Park to <br />provide for the intended whitewater usage. <br />It was the conclusion of the City, following the public meetings in Durango and subsequent <br />meetings with City staff, that Structures 10, 11 and 12 have a different intended purpose <br />34 <br />