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<br />I <br /> <br />I <br /> <br />recommendations. <br /> <br />Mr. ~arks: Mr. Chairman, when I prepared the agenda I had been notified <br />by t Division of Wildlife that it had certain recommendations ready <br />concerning the minimum stream flows. However, we did not get the actual <br />stream flows until fai~ly recently. So we did not have an ample oppor- <br />tunity to study them. I did advise the agencies that I thought would be <br />interested in these minimum stream flows and asked them to make recom- <br />mendations, particularly anything in the Colorado River drainage. We <br />hope to get some input from the Co~orado River Water Conservation Dis- <br />trict. On the minimum stream flows for that particular area which <br />involves the Crystal River, the Eagle River. the Roaring Fork and the <br />White River, that district has not had a sufficient opportunity to <br />review those recommended flows. There are other people interested also <br />in these recommended flows. <br /> <br />'.SQrthe staff recommends that those particular rivers that I mentioned be <br />put over to a future meeting of the board in order that sufficient input <br />can be obtained in that particular area. <br /> <br />.. .-.- ": ,-~ r ' . <br />cOn. .the Navaj 0 and Blanco we did have those in sufficient time to get <br />input from the Southwestern Water Conservation District, and that dis- <br />t ric't is in accord to those recommendations. <br /> <br />We recommend for this meeting that only the minimum stream flows for the <br />Navajo. the Blanco. and Badger Creek be considered. <br /> <br />The fieldwork for these recommended flows, the fish and aquatic biology. <br />is done primarily by personnel from the Division of Wildlife. They are <br />assisted in some cases by the Bureau of Sport Fisheries and Wildlife <br />and other federal entities. When we get the recommended flows we analyze <br />the flows with reference to potential uses from the stream and the actual <br />historic stream flow. We have placed around here in various locations <br />graphs showing a portion of that analysis. I would like to demonstrate <br />that very briefly. <br /> <br />(Using a chart to illustrate) We break down the stream by monthly average <br />flows taken from the available records. whatever period of record we have <br />on any particular stream. On this chart is shown the gaging stations <br />that we have used in arriving at these monthly average flows. This <br />particular one is the Crystal River near Avalanche Creek. And up here <br />it merely shows the flow in cubic feet per second, starting at O. 200. <br />400, and so on. <br /> <br />The water year in our records is broken down October through September. <br />We use the same monthly period to break down our average monthly flows. <br />Actually, these flows are computed on a daily basis. Since the daily <br />flows fluctuate somewhat and we simply can't get daily flows on a chart <br />of this size, we used the average monthly flow. We take the maxi~ <br />monthly flow for the .'~!'iod of record, maybe ten years. twenty years. <br />or thirty years. We tnen come up with a maximum monthly flow for the <br />month of October. Here in the Crystal River we have during the month <br />of October less than 200 second feet, which is a long-term avexage <br />maximu~ flow for the month of October. <br /> <br />-30- <br />