 Bigger cities are Dunkirk further to the north and Hazebrouck further to the south.Ledringhem is crossed by the small river Peene Becque, a tributary of the Franco-Belgian river Yser and there is one shorter tributary, the "Lyncke Becque", passing closer to the village center.Other small rivers are "Trommels Becque", "Putte Becque", "Platse Becque" and "Kaliszewski Becque".