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<br />:~~2~94 <br /> <br />water flows increase, these wave forms become larger, more powerful, and conducive to the <br />, sport of whitewater rodeo, play-boating, and slalom racing. The structures included in the <br />Whitewater Park are massive structures built of large stone, grouted together with concrete, <br />spanning the entire channel and are anchored well into the bed and banks of the river. They are <br />designed to divert and control water to create whitewater boating features, particularly at high <br />flows. These structures work together in tandem to create the desired features. It is this true <br />variety of features that makes the course attractive and useful to such a large cross-section of <br />potentiili users. <br /> <br /> <br />Figure 2. The U-structure is created from rock and grout laid in the riverbed for flow <br />control and the creation of a recreational whitewater feature. <br /> <br />The design of the in-stream structures is pertinent to this discussion and explains how <br />the same structure can provide navigable wmtewater at lower levels and dynamic whitewater <br />features at higher levels while controlling and diverting the flow. <br /> <br />One primary feature for use in flow control and the creation of whitewater features is <br />the ''U''-structure. The construction of a portion of this structure is shown in Figure 2. This <br />feature is used to create a river wide "drop" and can be used to constrict lower flows to increase <br /> <br />10 <br />