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Souris River
Souris River, about 720 km long, rises in the Yellow Grass marshes N of Weyburn, Sask, flows SE past Estevan and wanders S across the N Dakota border before entering Manitoba.
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Souris River, about 720 km long, rises in the Yellow Grass marshes N of Weyburn, Sask, flows SE past Estevan and wanders S across the N Dakota border before entering Manitoba.
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South Nahanni River, 563 km long, flows southeast out of the Ragged Range of the Selwyn Mountains, cuts across successive spines of the Mackenzie Mountains and empties into the Liard River.
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The South Saskatchewan River (1,392 km long) is a heavily utilized water source in southern Alberta and Saskatchewan and is a major tributary to the Saskatchewan River, ultimately discharging to Hudson Bay. Mean flow is 280 m3/s, but varies throughout the year, largely controlled by several dams and reservoirs along the river system. The South Saskatchewan River flows through an agriculturally productive region and is prone to periodic droughts and floods.
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Southampton Island, 41 214 km2, is situated between FOXE BASIN and HUDSON BAY. It combines the 2 basic regional relief types. Its north and northeast consist of undulating highlands of Precambrian SHIELD rocks, reaching
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Southern Indian Lake, 2015 km2, elev 254 m, max length 146 km, is located in north-central Manitoba.
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Spitsbergen is a bleak Norwegian island group only 965 km from the North Pole. It became strategically significant in WWII when Germany attacked the USSR in June 1941.
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St Clair River, 64 km long, flows in a southerly direction, connecting Lake HURON in the N with Lake ST CLAIR in the S, and forms the international boundary between Canada and the US. Its northern portion has an average width of 0.8 km and depth of 8-18 m.
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St Croix River, 121 km long, rises in the Chiputneticook Lakes and flows SE to Passamaquoddy Bay, forming part of the border between NB and Maine. It was discovered (1604) by the French, and de MONTS built the first settlement in Acadia on Ile Sainte-Croix (now St Croix I) near the river's mouth.
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St Joseph Island, 370 km2, lies at the east entrance of the ST MARYS RIVER in the North Channel connecting Lakes HURON and SUPERIOR, about 30 km southeast of Sault Ste Marie, Ont. The island is the most westerly section of the Canadian portion of the NIAGARA ESCARPMENT.
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St. Lawrence Lowland is a plain along the St. Lawrence River between Québec City in the east and Brockville, Ontario, in the west, including the Ottawa River valley west to Renfrew, Ontario.
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The St. Lawrence River is a grand river and estuary, which together with the Great Lakes forms a hydrographic system that penetrates 3,058 km into North America. The river proper, about 1,197 km long, issues from Lake Ontario, flows northeast past Montreal and Quebec City to the Gulf of St. Lawrence. The route of early explorers and the main axis of New France, the St. Lawrence River figured prominently in Canada's early history, and it remains the focus of settlement for much of the province of Quebec. It is still the most important commercial waterway in Canada, as well as a source of electric power and natural beauty. (See also St Lawrence Lowland.)
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The St Lawrence Seaway (Great Lakes Waterway) is the system of locks, canals and channels linking the Great Lakes and the St Lawrence River with the Atlantic Ocean.
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St. Margarets Bay, 70 km2, is a small inlet of the Atlantic Ocean on the SE coast of Nova Scotia, 40 km W of HALIFAX. It is a favourite summer resort area, noted especially for its relatively warm surface water, sandy beaches and ideal sailing conditions for small craft.
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St Mary's Bay, on the south coast of Newfoundland's Avalon Peninsula between Placentia Bay and Trepassey Bay, runs 65 km northeast to Colinet Harbour from its mouth between St Shotts and Point Lance, 32 km northwest.
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St Marys River, one of the largest rivers in Nova Scotia, flows into the Atlantic Ocean at a point 190 km E of Halifax.
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