Editing Ottawa River (section)

==Power generation==
A pulp and paper mill (at [[Témiscaming]]) and several [[hydroelectricity|hydroelectric]] dams have been constructed on the river. In 1950, the dam at [[Rapides-des-Joachims, Quebec|Rapides-des-Joachims]] was built, forming Holden Lake behind it and thereby submerging the rapids and portages at Deux Rivières.<ref name="OHF"/> These hydro dams have had negative effects upon shoreline and wetland ecosystems,<ref>Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). Cambridge University Press, Cambridge, UK.497 p.</ref> and are thought to also be responsible for the near extermination of [[American eel]]s, which were once an abundant species in the river, but which are now uncommon.<ref>{{cite web |title=COSEWIC Assessment and Status Report on the American Eel in Canada |url=http://publications.gc.ca/collections/Collection/CW69-14-458-2006E.pdf |pages=45–46|publisher=Committee on the Status of Endangered Wildlife in Canada |access-date=December 15, 2018}}</ref> As an economic route, its importance was eclipsed by railroad and highways in the 20th century. It is no longer used for log driving, however, it is still extensively used for recreational boating. Some 20,000 pleasure boaters visit the Carillon Canal annually.<ref name="PC-carillon"/>

Today, [[Outaouais Herald Emeritus]] at the [[Canadian Heraldic Authority]] is named after the river.

=== Hydroelectric installations ===

Hydroelectric installations on the Upper Ottawa (in downstream order):
{| class="wikitable"
|- style="background:#abcdef;" 
| style="width:26%;"| Installation
| style="width:16%;"| Type
| style="width:11%;"| Generating cap.
| style="width:11%;"| Year built
| style="width:16%;"| Name of reservoir
| style="width:20%;"| Operator
|-
| Bourque Dam
| Dam || n/a || 1949 || [[Dozois Reservoir]] || [[Hydro-Québec]]
|-
| Rapide-7
| Generating station || 48 MW || 1941 / 1949 || Decelles Lake || Hydro-Québec
|-
| Rapide-2
| [[Run-of-the-river hydroelectricity|Run of river]] g.s. || 48 MW || 1954 || n/a || Hydro-Québec
|-
| Rapides-des-Quinze
| Run of river g.s. || 95 MW || 1923 || n/a || Hydro-Québec
|-
| Rapides-des-Îles
| Run of river g.s. || 147 MW || 1966 || n/a || Hydro-Québec
|-
| Première-Chute
| Run of river g.s. || 130 MW || 1968 || n/a || Hydro-Québec
|}

Lower Ottawa (in downstream order):
{| class="wikitable"
|- style="background:#abcdef;" 
| style="width:26%;"| Installation
| style="width:16%;"| Type
| style="width:11%;"| Generating cap.
| style="width:11%;"| Year built
| style="width:16%;"| Name of reservoir
| style="width:20%;"| Operator
|-
| Otto Holden
| Run of river g.s. || 243 MW || 1952 || n/a || [[Ontario Power Generation]]
|-
| Des Joachims
| Run of river g.s. || 429 MW || 1950 || Holden Lake || Ontario Power Generation
|-
| Bryson
| Run of river g.s. || 61 MW || 1925 || n/a || Hydro-Québec
|-
| Chenaux
| Run of river g.s. || 144 MW || 1950 || n/a || Ontario Power Generation
|-
| [[Chats Falls Generating Station|Chute-des-Chats (Chats Falls)]]
| Run of river g.s. || 185 MW || 1931 || Lac des Chats || Hydro-Québec and OPG *
|-
| [[Hull-2]]
| Run of river g.s. || 27 MW || 1920 || n/a || Hydro-Québec
|-
| [[Carillon Generating Station|Carillon]]
| Run of river g.s. || 752 MW || 1962 || n/a || Hydro-Québec
|}
<nowiki>*</nowiki> Ontario Power Generation operates generators 2, 3, 4, and 5 with a capacity of 96 MW; and Hydro-Québec operates generators 6, 7, 8, and 9 with a capacity of 89 MW.

{{wide image|Ottawario.jpg|1000px|align-cap=center|Ottawa River overlooking  [[Parliament hill]] to the left and the [[Canadian Museum of History]] to the right}}