The observation and Studies on the two stations in the Ansung river are included that were justified types of Bed-materials movement and were estimated loads volume of sediment applied by sediment rating curve and/or drivel formulars according to both stream conditions. The results of evaluation for above purpose are given as follows 1) Drived formulas for sediment computation in accordance with river situations are given as follows. -Suspended load Yu-chun Ts=135H4.55 Hye-hwa Ts=454H3.71 -Bed load Yu-chun Tb=75.4H191 Hye-hwa Tb=134.5H1.82 2) Annual volume of surface erosion in the catchment area were obtained at yu-chun of 0.236mm Hye-hwa of 0.200mm and mean depth of 0.22mm 3) The Bed-materials movement with water depth were represented that ripple is bellow than 0.067 meter at yu-chun and bellow than 0.096 meter at Hye-hwa stream, Dunes is 0.067-0.22 at yu-chun and 0.096-0.23 at Hye-hwa, Transition is 0.22-0.46 at yu-chun and 0.23-0.58 at Hye-hwa and Antidunes is higher than 0.46 at yu-chun and 0.58 of water depth at Hye-hwa stream