The lower part of the river, where it meandered through sand and gravel deposits, has been flooded by the Romaine-2 reservoir.

[6] A map of the ecological regions of Quebec shows the river on the border between sub-regions 6j-S and 6n-T of the east spruce/moss subdomain.

[11] About 8 kilometres (5.0 mi) of the river's banks were subject to active erosion, mostly on the concave shores.

[11] Water temperatures at the mouth of the river where it entered the Romaine ranged from an average of 0 °C (32 °F) in January to 15.7 °C (60.3 °F) in July.

[12] The flooded section was thought to have high archaeological potential, but a survey found no sites.