Saint-Cyr River (Ottawa River tributary)
# Saint-Cyr River (Ottawa River tributary)

The Saint-Cyr River /ˌseɪntˈsɪər/ is a tributary of the eastern shore of the Ottawa River. The Saint-Cyr River flows into the Municipality Rapides-des-Joachims, then from Sheenboro into the Regional County Municipality (MRC) Pontiac Regional County Municipality, in Outaouais administrative region, in Quebec, in Canada.

## Geography

* north side: Poussière River, Dontenwill Lake, Bronson Lake;
* east side: Boom River, Marie-Jeanne Creek;
* south side: Ottawa River;
* west side: Penniseault Creek.

"Lac la Truite" (English: Troot Lake) (length: 2.4 km, altitude: 355 m) is the headwaters of the Saint-Cyr River.

From "Lac la Truite", the Saint-Cyr River flows over:

* 2.6 km to the southwest, to the outlet (coming from the north-west) of Fontaine Lake (altitude: 314 m);
* 2.0 km southerly to the outlet (from the east) of Nuage Lake (elevation: 312 m);
* 3.3 km to the southwest, to the outlet (coming from the west) of Braun Lake (altitude: 300 m);
* 2.2 km southerly to the Bory Lake outlet (from the northwest) (elevation 288 m);
* 360 m to the south, to the mouth of the outlet (coming from the southeast) of Lac Sérien (altitude: 267 m;
* 2.5 km to the southwest, to the outlet (coming from the north) of Bonpland Lake (altitude: 301 m);
* 2.3 km southerly to the north shore of Aberdeen Lake;
* 1.2 km crossing Aberdeen Lake to the south (length: 0.4 km, altitude: 212 m);
* 5.0 km to the south, to the mouth of the Boom river (coming from the north) which in particular drains the "Lac de la Touche" (altitude: 168 m);
* 1.0 km southeast across rapids to the outlet (from the north-east) of Walls Lake (elevation 190 m) and Lac des Amis (elevation 274 m);
* 2.6 km (or 1.4 km direct line) southerly passing west of the James Little Little Ecological Reserve and zigzagging to the mouth.

## Toponymy

The former name of the river was "Boom West Brook", as opposed to the branch being referred to as "Boom Creek" in this hydrographic slope.

The toponym "Saint-Cyr River" was formalized on December 5, 1968, at the Commission de toponymie du Québec.

## Sources

* ↑ "Atlas of Canada". atlas.nrcan.gc.ca. Retrieved 2018-01-29.
* ↑ Commission de toponymie du Quebec - Bank of Place Names - Toponym: "Saint-Cyr River"
