Agenda Item 14, Request for Approval of Policy Regarding RICD's

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Summary Of Hydrologic Requirements The following requirements are typically accepted hydrologic requirements used in evaluation and design of whitewater courses that are used for competition: • Course must contain sufficient flow to be navigable for its entire length. • The course must consist of natural and /or artificial obstacles to create whitewater features for the minimum flow rate intended for the RICD reach. • The site must be able to support a competition "without annoyance or inconvenience to the competitors." Artificial "pumped" courses take their cue from the gravity flow courses, tuning their flow and drop to provide a reasonable recreation experience with strong consideration for pumping costs. Artificial courses are therefore the most accurate measure of a reasonable experience, because the boating public must pay to participate. Presumably, if the recreation experience at an artificial "pay for" course was unacceptable, then attendance would decrease to non - profitable levels. The following table provides examples of existing artificial "pumped" courses with their design flow rates. Flow Rates for Artificial "Pumped" Circulation Courses Low flow (cfs) High flow (cfs) Dickerson, MD 200 600 La 5eu d' Urgell, Spain* Penrith Lakes, Australia 210 500 250 470 Flow Rates for Other Courses Worldwide Low flow (cfs) High flow (cfs) East Race, South Bend, USA Unknown 500 Confluence Park, USA 50 500 Mississippi Whitewater Park 300 800 Augsburg, Germany 350 490 Holme Pierrpont, UK 180 1000 One party suggested concentrating more on what is occurring in Colorado. * Note: This course hosted the 1992 Summer Olympics, the 1993, 1994, 1996, and 1998 World Cup Slalom Events, the 1999 World Slalom Championships, and numerous local and regional boating events. X