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pattern in occurrence, indicate that air contacts without ground truthing cannot be used to <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />categorize habitat used by the fish. <br />The crew measuring available habitat should measure transects in areas where fish <br />actually moved. Local movements by the fish from pool through a riffle or run to another <br />pool could be important in determining the range of areas where the fish are able to <br />move. This could help in the determination of what flows are needed for fish movement. <br />The study as currently designed has two components. This component of radio telemetry, <br />as well as a determination of habitat availability, through measurement of cross stream <br />cross sections of various habitat types. The locations for cross sections are randomly <br />selected at this point. The goal is to gather information on 10% of the total number of <br />clusters that have been developed for the river. However, there is no plan to determine if <br />those randomly selected sites are actually representative of the entire river system. It is <br />recommended that a longer reach of river be measured for habitat types to determine if <br />the percentages derived from each of the clusters actually represent longer river habitats. <br />This could be accomplished by habitat mapping a 2-3 mile reach of stream that includes <br />randomly selected clusters and comparing the percentage of each habitat type as shown <br />by the cluster and by the actual measurement of length for habitat mapping. <br />Draft Yampa River Radio Telemetry Report <br />Miller Ecological Consultants, Inc. <br />Page 52 <br />December 13, 1996