Berezayka - Berezeyka

Romanska - Romanovka

Daugava - Zapadnaya Dvina

Dvina - just Dvina or Severnaya Dvina

Pripet - Pripyat

Dniepra - Dniepr (Because in Russian this river - is "he" - Dniepr, not "she" - Dniepra)

Donaya - Donay



But anyway, i like that - cool work, especially non-russian ethnic names, its so unusual to see