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• <br />based on basic hydraulic formulas coupled with a working knowledge of this segment of the <br />Blue River and its characteristics. The structures that will create these features are hydraulically <br />and structurally sound, with anchors into the bed and banks of the river with large stone and <br />concrete. I may provide more detail regarding design information if necessary. <br />M <br />O , A????a ?. a ? ??s ?e. ?• ? <br />_.?•?''= ? °•;,?'-''?; <br />• • ' ?-. • :. +.? ' r. s'r•' .: : ? <br />:...r.?r• .;.. <br />' . .. • ' '1` - 9r- - •"'a-.?'-??-?''?`-_? <br />iL <br />. . <br />: : ? ... ' , < '.,. ? zt,,°,a a •q.?r? <br />f• . . aM• :-Mr.._.: <br />? ' ? •• - - ?:' ?_ ?9 <br />4" <br />-. ?f4aw.:.Mr? <br />• . •.?.i? . ... ?.?...?.. . _. <br />. . ? ?}aa <br />zi <br />. i ..l::?.. ? <br />.?.? ? , ..y? • . <br />? J• •???L <br />' ?.??• ? .? '`.. 4 . ?M <br />' S+" . ?•,. .. , /, <br />? ?..??..:??.s?___.??.- ?....? ., _ . ?... •. • . <br />Figure 5. Playboater in Pueblo Whitewater Park at flow of 600cfs. <br />The functionality of the course varies at varying flow levels. At lower levels, the courses <br />are navigable and useful as a training facility for entry-level boaters. As the flow increases, the <br />features become more appropriate for top-level boaters. At higher flow levels, the features <br />formed are appropriate for competitions in freestyle and slalom and attract out of town boaters <br />from the surrounding region. Large whitewater events can attract a number of users to the <br />community over an extended time period and can have a significant effect on the economy of the <br />surrounding town. At lower levels fewer paddlers will visit and fewer, if any, competitive events <br />will take place. This is particularly true in Silverthorne, which is near a number of excellent <br />whitewater rivers. Boaters who would otherwise paddle in these courses will be easily lured to <br />more powerful venues if there is insufficient water in the Blue River. <br />Minimum Boatable Flow <br />"Minimum boatable flow" is the flow rate necessary to float an average size small <br />whitewater craft through the Whitewater Park. Pools will have sufficient depth for a paddle <br />stroke to be taken, but little or no hydraulic whitewater features will exist or be created. <br />• <br />• <br />-9-