The hydrographic slope of the Maicasagi River is served by the R1018 (North-South) secondary road from Matagami, which spans the Maicasagi River at 4.2 kilometres (2.6 mi) from its mouth.

The surface of the river is usually frozen from early November to mid-May, however, safe ice circulation is generally from mid-November to mid-April.

The main hydrographic slopes near the Maicasagi River are: Caminscanane Lake (length: 11.0 kilometres (6.8 mi) in a north-south direction; maximum width: 2.25 kilometres (1.40 mi); altitude: 332 metres (1,089 ft)) is the head lake of the Maicasagi River.

The latter is crossed to the northwest by the Waswanipi River which is a tributary of Matagami Lake.

This last stretch of water is formed by a large widening of the Waswanipi River.