C.R.C.P. 26(a)(2) Disclosures of The CWCB, Case No. 02CW38

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• Saturday, June 21, 2003 Ted Kowalski, Esq. Legal Protection Specialist Colorado Water Conservation Board 1313 Sherman Street, Room 721 Denver, Colorado 80203 RE: Gunnison River Whitewater Course, CASE NO. 4-02CW38 RICD Determination Dear Mr. Kowalski: I have been asked to render an opinion on the minimum stream flow for a reasonable recreational experience, as defined in Senate Bill 01 -216, needed for the Gunnison Whitewater Course. In this effort, I have reviewed design and technical information provided with respect to "the minimal • stream flow required to create a reasonable recreational experience." On June 18, 2003, I visited the site and surveyed the hydraulic drop across the specific course features. I have also reviewed various other reports, studies, opinions, board minutes related to whitewater course flows. References for these site specific and related documents are listed in Attachment A - References. During this review I read the application and have comments regarding related provisions of Senate Bill 01 -216 and statements made in the application. A current summary of my opinions and their b,asis are listed below. My review and investigation into the Gunnison Whitewater Course began only last week, so this memorandum should be considered work in- progress and further review is anticipated. In particular, additional review and studies may be necessary, pending further discovery. OPINIONS AND BASIS FOR OPINIONS Opinion 1. This RICD is located in an appropriate reach of stream required for the intended use as required in Senate Bill 01 -216. • Basis of Opinion The proposed site has adequate drop, flow, length, and access needed to create a recreational whitewater course. The available drop is not indicated on any of the figures, but due to the existing diversion and channel gradient, sufficient drop should be available. Ii at'the site meet and exceed the range of �thuse at-a number of artificial courses. They are also within the range of my design experience on other whitewater courses. The length of approximately 1,000 feet (as roughly scaled off the site survey plan) is, in my experience, sufficient, and meets requirements of the current International Canoe Federation (ICF) rules for international caliber slalom sites. Access to the course also appears to be adequate; however lack of access immediately downstream of the course could create problems. P :WR\Nrcoulli\UPPER GUNNISON FINAL REPORTricksGu3.