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• variation due to the normal low flow during the summer and fall of the year. <br />Additional calibration flow and cross-section measurements were taken during <br />1995 to develop a stage/flow rating curve representing the full range of flow <br />conditions. <br />Over the 1994-1995 seasons, a total of five cross-sections (two in 1994 <br />and three in 1995) were developed and compared to ensure channel stability. <br />All of the cross-sections varied no more than two-tenths of a foot at each <br />measurement point along the section. The variation among the cross-sections, <br />similar to TA-a, was primarily due to the specific placement of the survey rod <br />on the creek's cobble lined bottom. An averaged cross-section was developed <br />for use with 9 sets of velocity data to compute a stage/rating curve. The <br />stage rating curve data covered flows ranging from approximately 11 cfs to 120 <br />cfs. The equation and r2 for the curve are as follows: y = 57.092x7.125, <br />where y = flow in cfs and x = depth of flow; r2 0.98. <br />Flow measurements for TR-a and TR-b corresponding to sampling dates are <br />provided at the beginning of Appendix A. <br />• SURFACE WATER QUALITY <br />As previously mentioned, the water quality along Trout Creek is <br />monitored via the parameters listed on Table 4.6-54, Section 4.6.8.9 of the <br />permit. Results of the analyses are discussed below. <br />Temperature and pH <br />Temperature (Figure 2) and pH (Figure 3) exhibited the same trends in <br />1995 as found during baseline studies and previous years monitoring. <br />Specifically, patterns in temperature are seasonal with slight variations in <br />pH. Overall, Trout Creek has remained alkaline in 1995. <br />Total Suspended Solids <br />Since 1987, Total Suspended Solids (TSS) concentrations have remained <br />relatively constant (Figure 4). The relatively constant TSS values observed <br />over much of the period appear to be the result of two conditions. First, the <br />stream channel, significantly altered during a 1984 flood, has stabilized and <br />the stream banks have begun to reestablish vegetation. Second, the section of <br />• the creek between TR-A and TR-B has become an inundated marsh as result of a <br />continuous string of beaver ponds. Additionally, several long stretches of <br />5 <br />