| Maicasagi | |
| Map: | Nottaway map.png |
| Subdivision Type1: | Country |
| Subdivision Name1: | Canada |
| Subdivision Type2: | Province |
| Subdivision Name2: | Quebec |
| Subdivision Type3: | Region |
| Subdivision Name3: | Eeyou Istchee Baie-James (municipality) |
| Length: | 152.2km (94.6miles)[1] |
| Source1: | Lake Caminscanane |
| Source1 Location: | Eeyou Istchee Baie-James (municipality), Nord-du-Québec, Quebec |
| Source1 Coordinates: | 50.4497°N -76.0153°W |
| Source1 Elevation: | 332m (1,089feet) |
| Mouth: | Maicasagi Lake |
| Mouth Location: | Eeyou Istchee Baie-James (municipality), Nord-du-Québec, Quebec |
| Mouth Coordinates: | 49.9556°N -76.5533°W |
| Mouth Elevation: | 262m (860feet) |
| Tributaries Left: | (from the mouth) Inconnue River (Maicasagi River), De la Trève River, Omo River, Monsan River |
| Tributaries Right: | Discharge of Lake Yapuouichi |
The Maicasagi River is a tributary of Maicasagi Lake. This river flows from the municipality of Eeyou Istchee Baie-James (municipality), in the administrative region of Nord-du-Québec, in Quebec, in Canada.
The lower half of the river flows through the cantons of De Berey, De Doreil, De Clérin, De Branssat, De Davost, De Monseignat and De Urfé.
The hydrographic slope of the Maicasagi River is served by the R1018 (North-South) secondary road from Matagami, which spans the Maicasagi River at 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: in a north-south direction; maximum width: ; altitude:) is the head lake of the Maicasagi River. This lake feeds on the north side by the discharge of four upstream lakes including Morain Lake, and on the south side by two lakes upstream.
The mouth of Lake Caminscanane is located at:
From the mouth of the head lake, the "Maicasagi River" flows over according to the following segments:
Upper course of the Maicasagi River (segment of)
Intermediate course of the Maicasagi River (segment of)
Lower course of the Maicasagi River (segment of)
The "Maicasagi River" flows on the eastern shore of Maicasagi Lake which in turn flows through the Southwest via the Max Passage into Goéland Lake. The latter is crossed to the northwest by the Waswanipi River which is a tributary of Matagami Lake.
The mouth of the Maicasagi River located at:
At the end of the journey, the Maicasagi River flows into Maicasagi Lake. This lake flows southward through the Max Pass into Gull Lake (Waswanipi River). This last stretch of water is formed by a large widening of the Waswanipi River.
The toponym "Maicasagi River" is of Native American origin. This toponym is on a map dated 1955.
The toponym "Maicasagi River" was formalized on December 5, 1968, at the Commission de toponymie du Québec, i.e. at the creation of this commission.[3]