Мста
Borovichsky District is located in the northeastern part of the Valday Hills in the basin of the Msta River. The Msta crosses the district from southeast to northwest. Msta's rapids are located in the district. The principal tributaries of the Msta within the limits of the district are the Uver and the Velgiya; both are right. The northeast of the district lies in the basin of the tributaries of the Uver, of which the Udina is the biggest one.