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beaver activity both above and below TR-b occurred causing the location of TR-b to <br />. become part of an inundated beaver pond. High flows destroyed the staff gauge at <br />TR-b in 1990 and again in 1991. As a result, no instantaneous streamflow data was <br />collected in 1990, while 1991 had one measurement in May. <br />Between April 1992 and July 1993 flow measurements and water samples were <br />collected on the same day at TR'b and TR-D, respectively. However, between the <br />sampling periods of July and August, 1993, beaver activity had resumed below TR-b <br />rendering the station unsuitable as a flow monitoring location. <br />In June 1994, a continuous flow monitoring station was installed at a new <br />location downstream of the previous location. Calibration flow and cross-section <br />measurements were taken during 1994 and 1995 to develop a stage/flow rating curve <br />for this location. <br />Over the 1994-1995 seasons, a total of five cross-sections were developed and <br />compared to ensure channel stability. An averaged cross-section was then developed <br />to compute a stage/rating curve. The stage rating curve data covered flows ranging <br />from approximately 11 cfs to 120 cfs. The equation and rZ for the curve are as <br />follows: y = 57.092x~~125~, where y = flow in cfs and x = depth of flow; rZ = 0.98. <br />As at TA-a, cross-section measurements were taken at TR-b during 1998 which verified <br />that the channel configuration had remained stable. <br />Flow measurements for TR-a and TR-b corresponding to Sampling dates are <br />provided at the beginning of Appendix A. <br />• <br />3 <br />