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<br />. . <br /> <br />Durango RICD <br /> <br />Opinion #2. <br /> <br />There is a basic lack of adequate information for review. There is insufficient information <br />supplied to determine significant physical details and dimensions of the proposed <br />structures; evaluate their hydraulic performance; evaluate flow paths, velocities, basic <br />hydraulic parameters such as the Froude numbers, direction of currents, location of <br />flows; and identify impacts to adjacent portions of the river. <br /> <br />Basis of Opinion <br />The Applicant did not provide cid~ te..design documents; analy~is;~] l\~l", topographical and <br />subsurface information and design calculations adequate to describe or readily evaluate the <br />hydraulic characteristics or the performance of the structures. The information provided does not <br />show important physical dimensions, features, elevations, construction details, hydraulic <br />information, or analyses necessary to describe, analyze, or construct the in-channel features. <br />Adequate design sections, profiles, and layout information were not provided. <br /> <br />The lack of design and analysis precludes adequate hydraulic analysis, evaluation, or review <br />needed to evaluate conformanc~-prQvi.sions of Senate Bill 216, the Supreme Court Decision, <br />CWCB's RICD rules, or the PplicyMam;;U'" ('>-'~ ~V~~ <br /> <br />Legal Basis .- -. <br />~. / <br /> <br />Same as in Topic #1, above. <br /> <br />Opinion #3. <br /> <br />It has not been demonstrated that the requested flows are the minimum flows required to <br />provide a reasonable recreational experience. <br /> <br />There is a significant lack of analysis, engineering, field survey data, technical and <br />design information provided to allow a meaningful review regarding the "minimum flow" <br />requirements as specified in Senate Bill 216 and the Supreme Court Decision. <br /> <br />Basis of Opinion <br />The Applicant has not provided [mal design documents, analysis, survey data, or design <br />calculations adequate to describe, or readily evalujlte, basic hydraulic characteristics or the <br />general performance of the course. The applican~ determination of "the minimum amount of <br />stream flow necessary to acc!!$!]Jlish that intended recreation experience" appears to include <br />only cursory application of\X;eu equation. <br /> <br />The weir equation used in the Design Report is: Q = C * bh1.5 <br /> <br />where, Q is the river flow in cubic feet per second, C is a coefficient, b is the width of the weir in <br />feet, and h is reported to be the height or approximate depth of flow in feet. The weir ~n <br />relates upstream depth (h) and width (b) to flow (Q) w~ch is used in the Design Repo an A?~ <br />