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cross-section at TR-a existed as a result of the review to warrant <br />development of a new stage/flow rating curve. However, since the high flow <br />period occurred in late May of 1994, data points representing the high flow <br />period during 1994 were not obtained. As such, flow data shown in the <br />charts for 1994 exceeding about 50 cfs may not be representative of actual <br />flow. Additional calibration flow and cross- section measurements will be <br />made during 1995 in an attempt to cover the full range of stage/flow <br />observations needed for the stage/flow curve to represent all stages of <br />flow. <br />Additionally, flow measurements taken during the latter part of <br />' October may be inaccurate due to beaver dam building activity immediately <br />below TR-a. The beaver dam was taken out on November 4, 1999. Flow <br />measurements corresponding to sampling dates are provided at the beginning <br />of the Appendix A. <br />Instantaneous flow records for TR-b are provided in Appendix A. Flow <br />records for this location began in 1989. Prior to this time, the flooding <br />which occurred during 1984 caused continual instabilities in the stream <br />channel at this location for several subsequent years. As a result, re- <br />establishing a monitoring station was not possible. <br />1 In 1988, a new stable reach of the stream channel was located and a <br />monitoring station was re-established. However, the majority of the 1988 <br />season was spent developing a stage rating curve for the channel cross- <br />section with flow measurements being taken on a sporadic basis rather than <br />in conjunction with water quality sampling periods. <br />Instantaneous flow measurements were taken at TR-b during 1969 in <br />conjunction with water quality samples taken at TR-D, except for the <br />October sampling period. Between the sampling periods of September and <br />October in 1989, beaver activity both above and below TR-b occurred causing <br />the location of TR-b to become part of an inundated beaver pond. <br />High flows, in part due to beaver activity, destroyed the staff gauge <br />at TR-b in 1990 and again in 1991. As a result, no instantaneous <br />streamflow data was collected in 1990, while 1991 had one measurement in <br />May. <br />All sampling periods between April 1992 and July 1993 had flow <br />measurements and water samples taken on the same day at TR-b and TR-D. <br />Between the sampling periods of July and August 1993 beaver activity had <br />4 <br />