Tolshma

a river in Kostroma and Vologda oblasts, RSFSR; a right tributary of the Sukhona River in the Severnaia Dvina River basin. The Tolshma is 157 km long and drains an area of 1,540 sq km. It rises in the Galich Upland and is fed by a variety of sources, chiefly snow. The river freezes in early November, and the ice breaks up in late April or early May. The Tolshma is used for floating timber.