Warthe
the principal tributary of the Oder river; rises near Kromolov, in Poland; flows N.; at Kolo turns to the W.; at Schrimm again to the N.; at Obornik to the W.; at the influx of the Obra finally to the N.; at the influx of the Netze enters on the Wartebruch, a swampy tract 46 miles long by 9 wide, and joins the Oder at Küstrin, where it is 640 feet broad. Its tributaries are, from the right the Netze and Küddow, from the left the Prosna and Obra. Its total length is 487 miles.