STATISTICS OF SEDIMENT TRANSPORT IN GOODWIN CREEK

Sand and gravel transport were sampled in flow rates from just above t o several times the critical shear stress of the bed material at two s ites on Goodwin Creek, Mississippi. Transport rates representative of the channel cross section were calculated from these samples. The stan dard deviations of the transport rates were approximately equal to the mean for transport rates grouped by bed shear stress. Normalized prob ability density functions defined for the transport rates were most cl osely approximated by a gamma form of the probability function. The pr obable accuracy in the prediction of the time-averaged transport rate for a given number of measured transport rates can be calculated from this information.