 The region is relatively poor in fresh water, since lakes and rivers only count as 1.5% of the land area.It possesses two hydrographic regions, the first holds all the streams that pour into the estuary of the Saint-Lawrence river and the region of Chaleur Bay and Percé, whose streams flow south into New-Brunswick and Maine.These regions influenced the layout of the administrative areas of Bas-Saint-Laurent, by setting limits to some regional county municipalities.