ABSTRACT
The impact of placer mining on suspended sediment concentration (SSC) variability is discussed for rivers of North Kamchatka (Russia) and the Selenga river basin (Mongolia) taking into account a discharge of sewage. It is shown that with a constant input of anthropogenic particles in the river a seasonal surpass over SSC baseline downstream of a placer mining is about 1.6–8.8 times, depending on the river size and water phase. Mathematical algorithm for calculation of suspended particles transport along the river reaches situated downstream of anthropogenic sediment source is proposed; the efficiency was tested on studied phenomena within the accuracy of 6–31%.
