Role of alluvium in indemnification of beach sedimentation deficiency of Terpeniya Bay (Sakhalin island)

The problem of indemnification the deficiency of coastal-sea inwashes in a coastal zone due to natural carrying out its by rivers on one of South sites of Terpeniya bay shore (Sakhalin island) is considered about. Calculation of volume carrying out alluvium by the rivers is made. Now and in the near future the rivers cannot compensate deficiency of inwashes because of what destruction of shore will proceed. As one of decisions it is possible to consider artificial indemnification in aggregate with keeping inwashes of a beach, and also modeling specific morphometric parameters of beach constructions.