The Sierpienica is a river of Poland. It becomes a tributary of the Skrwa Prawa near Sierpc. v t e...

tributaries include the Okalewka, the Urszulewka, the Chraponianka, the Sierpienica, and the Bobrownica. Its shorter counterpart, the Skrwa Lewa (Left Skrwa)...

and comes either from the word sierp ("sickle") and the name of the Sierpienica river, or from the old Polish given names Wszepraw/Siepraw or Sierpek...