The Red River Expedition at Kakabeka Falls by Frances Anne Hopkins, 1877
|Basin countries||Canada, United States|
|Mouth elevation||183 m (600 ft)|
The Kaministiquia River (pron.: //) is a river which empties into western Lake Superior at the city of Thunder Bay, Ontario. Kaministiquia (Gaa-ministigweyaa) is an Ojibwe word meaning "(river) with islands" due to two large islands (McKellar and Mission) at the mouth of the river. The delta has three branches or outlets: the southernmost is known as the Mission River, the central branch as the McKellar River, and the northernmost branch as the Kaministiquia. Residents of the region commonly refer to the river as the Kam River.
Kakabeka Falls located on this river is the largest waterfall in the Lake Superior watershed at a height of 40 metres (131 ft). Below these falls, the river flows through an extensive floodplain created by an ancient predecessor that flowed through this region following the last ice age.
Tributaries of the Kaministiquia include the:
"Kamanistigouian," as a place, is first mentioned in a decree of the Conseil Souverain de la Nouvelle-France dated 23 August 1681 instructing one of two canoes to make known the king's amnesty to coureurs de bois, although the still unnamed river is depicted on the 1671 "Carte des Jésuites" as "R. [rivière] par où l'on va aux Assinipoualacs à 120 lieues vers le Nord-Ouest." (River by which one travels to the Assinipoualacs 120 leagues to the north-west) Like the Pigeon River, this river was an important part of the water route into western Canada. During the French regime, two fur trading posts were established at the delta of the Kaministiquia, the first by Daniel Greysolon, sieur Dulhut (1684/85-1696) and a second one in 1717 by Zacharie Robutel de la Noue, both now usually referred to as (Fort Kaministiquia)) because of the large number of variant spellings used during the French regime, such as Kamanistigouian, Camanistigoyan, Kaministigoyan, etc. A British trading post of Fort William, Ontario was established here in 1803 by the North West Company at the river's mouth, and another upstream at Point de Meuron by the Hudson's Bay Company. The two rival British posts were amalgamated in 1821. The river has had many spellings since 1681, finally being spelled as Kaministiquia, although for a time Kaministikwia was also an official spelling.
Following the opening of the American canal at Sault Ste Marie in 1855, the river became more accessible to navigation. Silt had created a sand bar at its principal mouth, such that dredging was required as early as 1873 to enable larger boats to venture farther upstream.
After 1883, the lower Kaministiquia river was heavily industrialized by the Canadian Pacific Railway with railway yards, coal yards and docks, grain elevators, shipping docks, and sawmills. The double-deck Jackknife Bascule Bridge was built by the CPR in 1913 to allow trains and vehicles to cross from the mainland to Mission Island. The Thunder Bay Generating Station is located on Mission Island in the river's delta. The three branches of the river at the delta were extensively dredged and widened by the federal Department of Public Works in the early twentieth century to facilitate navigation.
The river has been depicted by many prominent Canadian artists such as William Armstrong (1822–1914), Frances Anne Hopkins (The Red River Expedition at Kakabeka Falls, 1877) and Lucius Richard O'Brien (Kakabeka Falls, 1882).
Voyageur Route 
Since the Grand Portage route was better the Kaministiquia route was soon forgotten. The problem was that it was on the US side. In 1784 the North West Company sent Edward Umfreville to find a route on the British side. He failed. In the summer of 1798 Roderick McKenzie, the cousin of Alexander Mackenzie (explorer), met a group of Indians on the Height of Land Portage who showed him the Kaministiquia route. The new route was approved by Simon McTavish in 1799.
This section covers the voyageur route from Fort William 135 miles west to the juncture of the Grand Portage route at Lac La Croix. For the other route see Grand Portage. For the whole route to Lake Winnipeg see Winnipeg River and for all routes see Canadian canoe routes (early). The Kaministiquia and Grand Portage were the two main routes used by Canadian fur traders travel to western Canada from the Great Lakes. The Kaministiquia route was first used in 1688 by Jacques de Noyon. About 1731 La Vérendrye used Grand Portage which became the preferred route. Since it was impractical for western traders to make a round trip to Montreal in one season, they would go to Grand Portage and exchange goods with boats that had come up from Montreal. By 1803 it was found that Grand Portage was on the US side of the border and the route was moved 40 miles northeast to Fort William.
The canoe route ran west from Fort William with only one decharge to Kakabeka Falls, which was passed by the Mountain Portage. The Northwest Company soon built a road to a depot above the falls. From here north up a swift stretch with at least seven portages, and then some more portages and significant altitude gain to Dog Lake (Ontario) about 25 miles northwest of Fort William. Then an easy 50 miles northwest up the twisting Dog River (Ontario), Jordain Creek and Cold Water Creek to Cold Water Lake. Then began a difficult boggy stretch west through the 3-mile Prairie Portage, Height of Land Lake, the half-mile De Milieu Portage, Lac de Milieu, the mile-and-a-half Savanne Portage to the Savanne River in the Lake Winnipeg drainage. Then west down the Savanne to Lac des Mille Lacs. Since the Seine River (Ontario) is too rough for freight canoes, the route went over the quarter-mile Baril Portage to the Pickerel River and Pickerel Lake, the Pickerel and Deux Rivières Portages to Sturgeon Lake and down the Maligne River to Lac La Croix where the route from Grand Portage came in from the southeast. For the route west from Lac La Croix see Canadian canoe routes (early).
See also 
- Pierre Margry, Découvertes et établissements des Français ... en Amérique septentrionale, (Paris, 1876-1886), VI, 4-6.
- Yves F. Zoltvany, Greysolon Dulhut, Daniel, Dictionary of Canadian Biography, v. 2 (1701-1740.
- Nive Voisine, Robutel de la Noue, Zacharie, Dictionary of Canadian Biography, v. 2 (1701-1745).
- Morrison, Jean F. Superior rendez-vous place : Fort William in the Canadian fur trade. Toronto : Natural Heritage Books, 2007. 1st ed. appeared in 2001.
- Eric C. Morse, 'Fur Trade Canoe Routes of Canada/Then and Now',1979