Upper course
![](http://upload.wikimedia.org/wikipedia/commons/thumb/2/2a/Podlaskie_-_Zawady_-_Targonie_Wielkie_-_NNE_-_Ślina_-_kładka_-_v-SSE.jpg/220px-Podlaskie_-_Zawady_-_Targonie_Wielkie_-_NNE_-_Ślina_-_kładka_-_v-SSE.jpg)
Lower course
The Ślina is a 40 km long tributary of the Narew in the northeast Poland in the voivodeship Podlaskie. It is very popular with canoeists and anglers.
Run
The Ślina rises at Wysokie Mazowieckie and flows north to the Narew, where it joins Białystok flows out.