Saint Louis River
| Saint Louis River | ||
 Saint Louis River at Thomson, MN |
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| Data | ||
| Water code | US : 662334 | |
| location | Minnesota (USA) | |
| River system | Saint Lawrence River | |
| Drain over | Saint Marys River → St. Clair River → Detroit River → Niagara River → Saint Lawrence River → Atlantic Ocean | |
| source | at Hoyt Lakes 47 ° 30 '4 " N , 91 ° 49' 51" W. |
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| muzzle | to Superior Bay ( Upper Lake ) coordinates: 46 ° 45 ′ 0 ″ N , 92 ° 6 ′ 0 ″ W 46 ° 45 ′ 0 ″ N , 92 ° 6 ′ 0 ″ W |
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| Mouth height |
184 m
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| length | 309 km (according to other sources 286 km) | |
| Catchment area | 93,030 km² | |
| Left tributaries | Whiteface River , Cloquet River | |
| Big cities | Duluth | |
| Medium-sized cities | Superior | |
| Small towns | Cloquet | |
 Saint Louis River basin |
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The Saint Louis River is a (without meander ) 309 km long river in the US state of Minnesota .
It rises on the western edge of Lake County and flows into a freshwater estuary between the twin ports of Duluth and Superior in the Superior Bay of the Upper Lake . The largest tributaries are the Whiteface River and Cloquet River .
The uppermost source branch of the Saint Louis River flows as the North River into Seven Beaver Lake . The then initially west-facing upper course connects numerous swampy and boggy depressions, which are occupied by boreal coniferous forest . Then the river gradually swings southwest and meanders through forests that are richer in hardwood. From the village of Floodwood, the Saint Louis River turns east and flows through a rocky narrow valley with numerous rapids and small waterfalls below the town of Cloquet . The steep gradient here is used by five hydropower plants with reservoirs.
In the mid-20th century, the lower reaches of the Saint Louis River was one of the most polluted rivers in Minnesota due to the discharged sewage. It wasn't until the 1970s that the Environmental Protection Agency (EPA) became aware of the problem. The water quality could slowly be improved again from 1978 onwards by the construction of sewage treatment plants.
The Saint Louis River is considered to be the main source river of the Saint Lawrence River .
Web links
Individual evidence
- ↑ a b U.S. Geological Survey: National Hydrography Dataset high-resolution flowline data. The National Map , accessed May 1, 2012
- ↑ www.lakesuperiorstreams.org