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Y ' <br /> SG will voluntarily seek to meet through annual operational and management <br /> coordination and agreements. These voluntary flow arrangements will be determined on <br /> an annual basis and they will depend primarily on whether the year is a dry, wet,or <br /> year. <br /> a ear. <br /> C. Dry,average and wet year hydrologic conditions are defined as the monthly 25%, 50%, <br /> and 75%exceedances of the 23 year period of record from 1985 to 2007 for the Colorado <br /> River. In addition,the SG has reviewed other periods of record, specifically 1941-1963, <br /> 1964-1985, 1941-present and 1964-present. By reviewing all of these different periods of <br /> record,the SG was able to understand many different types of hydrological conditions <br /> under different periods of record. (Of course,we still need to do this!) However,the SG <br /> recognizes that the most recent period of record may be the most appropriate record <br /> because it reflects the present level of water development,and the river conditions where <br /> the ORVs were established and documented. (Not sure if this is true but we will find out.) <br /> The flow levels for the CWCB instream flow are documented in the Grand County <br /> Stream Management Plan and form the basis for the baseflow protection, although this <br /> information(and any other information that would be generated by the Division of <br /> Wildlife)will be subject to review by the Board who would be the arbiter of whether to <br /> proceed in obtaining an instream flow water right decree(and for what flows). The dry, <br /> average and wet year flow levels are a synthesis of the Recommended Optimal <br /> Environmental Flows developed by Habitech Inc.using PHABSM and site-specific <br /> stream measurements and represent Grand County's recommendation for habitat <br /> conditions for the reach of river as well as the recommended recreational flow based on <br /> online user surveys and field verification and the Grand County study. These are the <br /> Management Plan's"target flows"that the SG will voluntarily attempt to satisfy. <br /> The goal of the Management Plan for protecting and sustaining recreational fishing and <br /> recreational boating is to satisfy the base flow protection through the protection of a <br /> CWCB instream flow water right obtained through the CWCB and water court processes, <br /> and to attempt to achieve voluntary target flows set forth below,based on whether the <br /> year is classified as a dry, average or wet year. The SG understands that by agreeing to <br /> both base flow protection and voluntary target flows,based on the type of hydrologic <br /> year that exists,the minimum and optimum flows will not be satisfied for every <br /> recreational opportunity,in every year. However,by establishing base flow protection, <br /> the biologic habitat should be maintained,and the habitat would likely receive more <br /> protection than if the BLM deemed the segment as suitable for wild and scenic <br /> designation. Moreover,by providing voluntary target flows based on the type of <br /> hydrologic year that exists,the SG may be able to provide a range of flows and shape the <br /> flows so that certain recreational opportunities associated with the ORVs can be targeted. <br /> For example, if the optimal fish flows have been satisfied in the last two dry water years, <br /> but the optimal recreational boating flows have not been satisfied,then the SG can in the <br /> third year(an average year in this example)attempt to meet the optimal boating flows for <br /> a longer time period and not achieve the optimal fish target flushing flows. <br /> D. Recreation(Fishing)ORV Flow Ranges*: <br /> Page 10 of 15 <br />