The gaging station Muddy River above Clear Creek began operation in August 1980, although stream-discharge records and sediment data were insufficient for daily sediment-discharge records until October 1981. Sediment discharge was measured at the Muddy River above Clear Creek through June 14, 1984 ( fig. 44 ). The gaging station Muddy River below Clear Creek was established June 24, 1983. The daily sediment-discharge values shown in figure 45 represent the station above Clear Creek for water years 1982-83 and the station below Clear Creek for water years 1984-90. Periodic sediment-discharge measurements made at Clear Creek between December 14, 1982, and August 6, 1985, confirmed that sediment delivery to the Muddy River from Clear Creek was insignificant at all stages. The cumulative sediment discharge plotted for the two Muddy River stations is therefore equivalent. Low-flow sediment concentrations may not be comparable, however, because concentration was diluted by Clear Creek, which accounted for about 30 percent of the flow at the Muddy River below Clear Creek.
