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<br />000599 <br /> <br />Summary Of HydroloQic Requirements <br /> <br />The following requirements are typically accepted hydrologic requirements used in <br />evaluation and design of whitewater courses that are used for competition: <br /> <br />. Course must contain sufficient flow to be navigable for its entire length. <br />. The course must consist of natural and/or artificial obstacles to create <br />whitewater features for the minimum flow rate intended for the RICD reach. <br />. The site must be able to support a competition "without annoyance or <br />inconvenience to the competitors." <br /> <br />Artificial "pumped" courses take their cue from the gravity flow courses, tuning their <br />flow and drop to provide a reasonable recreation experience with strong consideration <br />for pumping costs. Artificial courses are therefore the most accurate measure of a <br />reasonable experience, because the boating public must pay to participate. Presumably, <br />if the recreation experience at an artificial "pay for- course was unacceptable, then <br />attendance would decrease to non-profitable levels. The following table provides <br />examples of existing artificial "pumped" courses with their design flow rates. <br /> <br />Flow Rates for Artificial "Pumped" Circulation Courses <br />Low flow lefs} HiQh flow (cfs) <br />200 600 <br /> <br />210 500 <br /> <br />Dickerson, MD <br />La Seu d'Urgell, Spain* <br />Penrith Lakes, Australia <br /> <br />250 <br /> <br />470 <br /> <br />Flow Rates for Other Courses Worldwide <br />Low flow lcfs) HiQh flow (cfs) <br />Unknown 500 <br /> <br />50 500 <br /> <br />East Race, South Bend, USA <br />Confluence Park, USA <br />Mississippi Whitewater Park <br />Augsburg, Germany <br />Holme Pierrpont, UK <br /> <br />300 <br />350 <br />180 <br /> <br />800 <br />490 <br />1000 <br /> <br />* Note: This course hosted the 1992 Summer Olympics. the 1993. 1994. 1996. and 1998 World <br />Cup Slalom Events, the 1999 World Slalom Championships. and numerous local and regional <br />boating events. <br /> <br />10 <br />