The O'Sullivan River is a tributary of

Lake Waswanipi Lake Waswanipi is a lake located in municipality of Eeyou Istchee Baie-James (municipalité), in administrative region of Nord-du-Québec, in Quebec, in Canada. Waswanipi Lake extends into the townships of Bergères, Bossé, Nelligan, Bellin and ...

, which is crossed on the North by the

Waswanipi River The Waswanipi River is a tributary of Matagami Lake. The Waswanipi River flows in the Municipality of Eeyou Istchee Baie-James in the administrative region of Nord-du-Québec, in Quebec, Canada. Geography The main hydrographic slopes adjacent ...

(the

James Bay James Bay (, ; ) is a large body of water located on the southern end of Hudson Bay in Canada. It borders the provinces of Quebec and Ontario, and is politically part of Nunavut. Its largest island is Akimiski Island. Numerous waterways of the ...

drainage). The O'Sullivan River flows North into the

Abitibi Regional County Municipality Abitibi Regional County Municipality () is a regional county municipality in the Abitibi-Témiscamingue region of Quebec. The seat is Amos. Subdivisions There are 18 subdivisions within the RCM: ;Cities & Towns (1) * Amos ;Municipalities (10 ...

, and into Eeyou Istchee James Bay (municipality), in the

Nord-du-Québec Nord-du-Québec (; ) is the largest, but the least populous, of the seventeen administrative regions of Quebec, Canada. Spread over nearly 14 degrees of latitude, north of the 49th parallel, the region covers on the Labrador Peninsula, making ...

, in

Quebec Quebec is Canada's List of Canadian provinces and territories by area, largest province by area. Located in Central Canada, the province shares borders with the provinces of Ontario to the west, Newfoundland and Labrador to the northeast, ...

, in

Canada Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of coun ...

. The course of the O'Sullivan River crosses the townships of Charrette, Adhémar, Labrie, Ralleau, Ruette, Benoit, Duplessis and Bossé.

Geography

The surrounding hydrographic slopes of the O'Sullivan River are: * north side:

; * east side:

Wetetnagami River The Wetetnagami River is a tributary of the south shore of Nicobi Lake flowing in Quebec, in Canada, overlapping the administrative areas of: *Abitibi-Témiscamingue: in Senneterre, Quebec; *Nord-du-Québec: in Eeyou Istchee Baie-James. This r ...

Mégiscane River The Mégiscane River is a tributary of Parent Lake (Abitibi). It flows in the Northwest of Quebec, in Canada, in the administrative regions of: *Mauricie: in the westernmost part of the town of La Tuque; *Abitibi-Témiscamingue: in the territory o ...

; * south side: Louison Lake, Delestres River; * west side: Mossant Creek, Lecompte River, Robin River (Parent Lake). A little unnamed lake (length: ) is the headwater body of the O'Sullivan River. This lake is located southeast of Castonguay Lake, north of Louison Lake, about northeast of Senneterre (parish),

Abitibi-Témiscamingue Abitibi-Témiscamingue () is an administrative region located in western Québec, Canada, along the border with Ontario. It became part of the province in 1898. It has a land area of and its population was 147,082 people as of the 2021 cens ...

. This head lake obtains some 15 small lakes upstream and nearby. From the small head lake, the O'Sullivan River flows over: * westerly, then northerly to the south shore of Castonguay Lake, which the current flows northward on , i.e. on its full length; * northerly to the south shore of Gaillard Lake, where the current crosses over to the northeast; * northerly to Butterfly Lake (length: ) as the current flows northward on ; * northerly to the south bank of the "Lake of the Line" which the current flows northward on ; * northerly, to the south shore of Novellet Lake, where the current flows north; Lake Novellet receives the waters of the Sheilann Lake outlet from the east; * northwesterly to a south discharge; * northerly and westerly to its mouth on the south shore of Puticamica Lake (length: ) that the current flows westward on ; * northerly to the south shore of

that the current flows through on then merge to the current of

Toponymy

The natives used the name "Pusticamica" to designate this watercourse. At the request of the Commission de toponymie du Canada, the name "Rivière O'Sullivan" has been attributed to evoke the work of life of Henry O'Sullivan ( Sainte-Catherine-de-Fossambault], 1845 -

Loretteville Loretteville () is a List of former municipalities in Quebec, former city in central Quebec, Canada. It was amalgamated into Quebec City on January 1, 2002. It is located within the borough of La Haute-Saint-Charles, and also contains the upmark ...

, 1912). After studying at

Laval University Laval means ''The Valley'' in old French and is the name of: People * House of Laval, a French noble family originating from the town of Laval, Mayenne * Laval (surname) Places Belgium * Laval, a village in the municipality of Sainte-Ode, Luxe ...

in 1869, O'Sullivan worked as a land surveyor, geologist and explorer in the Department of Lands and Forests. O'Sullivan explored much of

Labrador Labrador () is a geographic and cultural region within the Canadian province of Newfoundland and Labrador. It is the primarily continental portion of the province and constitutes 71% of the province's area but is home to only 6% of its populatio ...

, Gaspésie, all of

. The toponym ''O'Sullivan River'' was formalized on December 5, 1968, at the Bank of Place Names of the

Commission de toponymie du Québec The Commission de toponymie du Québec (, ''Toponymy Commission of Québec'') is the Government of Québec's public body responsible for cataloging, preserving, making official and publicizing Québec's place names and their origins according to th ...

.qc.ca/ct/ToposWeb/fiche.aspx?no_seq=45937 Commission de toponymie du Quebec - Bank of Place Names - Toponym: "O'Sullivan River"
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Geography

Toponymy

Notes and references

See also