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002908 Background as an Expert Witness As an expert witness I have previously testifie~ in Colorado water courts Water Divisions 1,4 a.fi.d-SroTisSl1es related to the Golden-(Division No; 1 Case 98CW448),Vail(DivisionNo.5 Case OOCW259), Breckenridge (Division No.5 Case OOCW281), and Gunnison (Division No.4 Case No. 02CW38) Water Parks. I also gave testimony before the CWCB for issues related to the Pueblo and Gunnison Parks. In all cases I have been qualified as an expert witness with regard to my experience as aProfessiona1 Engineer, Whitewater/Boating Park Designer, and Expert Kayaker based 011 the qualifications listed above. Boating Park Design Boating Park design begins with an infoffilation gathering phase. In this phase infonnation about the site and the people who will use it are gathered. Necessary site infonnation includes existing gradient, width and depth of the existing riverbed, historical average and peak flows, and existing features in the region of interest. User infonnation includes type and ability levels of the different expected user groups. User groups can include freestyle boaters, sla10mists, recreational boaters, rafters and people in inflatables among others. Public meetings are held in order to determine the design objectives of the community and the people who will use the park. The designer then uses this infonnation to design the layout of a particular course and tailor it for a particular community. The layout is typically a balance between the desires ofthe many user groups, the constraints of the riverbed in which the park is created and the budgeting constraints of the project. Parks with sufficient drop and flow allow for the most dynamic features al1d are typically the venues that attract the most users and the most big events. Once the layout of the course is established the design of the particular features are tailored to the existing riverbed. In-stream modifications are difficult and require careful planning. The structures placed in the stream must be stable yet create the desired feature without decreasing the capacity ofthe existing streambed or hindering the stream's natural sediment transport mechanisms. The structures are also designed to create a navigable stream at water levels that vary from typical lows to extreme floods. Within this spectrum ofpotential water levels the structure must not create a dangerous hydraulic feature. Additionally, flow control needs to be established and maintained throughout the boating park in order to prevent bank erosion or flow conditions that are hazardous to in-stream navigation. The Steamboat Springs Boating Park Background I spent a substantial amount oftime paddling on the Yarnpa River previous to the construction of this Boating Park. In that time, public interest in creating the Boating Park grew -3-