| Lake St. Clair | |
|---|---|
.jpg) False-color imagery fromSentinel-2, showing Lake St. Clair in April 2023 | |
  Lake St. Clair | |
| Location | (Great Lakes) |
| Coordinates | 42°28′N82°40′W / 42.467°N 82.667°W /42.467; -82.667 |
| Type | Freshwater lake |
| Primary inflows | St. Clair River,Thames River,Sydenham River,Clinton River,Pine River |
| Primary outflows | Detroit River |
| Basin countries | Canada, United States |
| Max. length | 26 mi (42 km)[1] |
| Max. width | 24 mi (39 km)[1] |
| Surface area | 430 sq mi (1,114 km2)[1][2] |
| Average depth | 11 ft (3.4 m)[1] |
| Max. depth | 27 ft (8.2 m) |
| Water volume | 0.82 cu mi (3.4 km3)[1] |
| Residence time | 7 days |
| Shore length1 | 130 mi (210 km) plus 127 mi (204 km) for islands[3] |
| Surface elevation | 574 ft (175 m) |
| Islands | Gull Island,Harsens Island, Strawberry Island Fantasy Island and Peche Island |
| Settlements | Detroit |
| 1 Shore length isnot a well-defined measure. | |
Lake St. Clair (French:Lac Sainte-Claire) is a freshwater lake that lies between the Canadian province ofOntario and the U.S. state ofMichigan. It was named in 1679 by French Catholic explorers after SaintClare of Assisi, on whose feast day they first saw the lake.
It is part of theGreat Lakes system (although not considered one of the five Great Lakes), and along with theSt. Clair River andDetroit River, Lake St. Clair connectsLake Huron (to the north) withLake Erie (to the south). It has a total surface area of about 430 square miles (1,100 km2) and an average depth of just 11 feet (3.4 m); to ensure an uninterrupted waterway, government agencies in both countries have maintained a 30-foot-deep (9.1 m)shipping channel through the shallow lake for more than a century.
This lake is situated about six miles (10 km) northeast of the downtown areas ofDetroit, Michigan, andWindsor, Ontario. Along with theSt. Clair River andDetroit River, Lake St. Clair connectsLake Huron (to its north) withLake Erie (to its south). The area is notable for the fact that the Canadian territory around the lake (Windsor metropolitan area) lies south of the adjacent United States territory.
Lake St. Clair measures about 22.5nautical miles (42 km; 26 mi) from north to south and about 21 nautical miles (39 km; 24 mi) from east to west. Its total surface area is about 430 square miles (1,100 km2). This is a rather shallow lake for its size, with an average depth of about 11 feet (3.4 m), and a maximum natural depth of 23 feet (7.0 m). However, it is 27 feet (8.2 m) deep in the navigation channel which is dredged forlake freighter passage by theU.S. Army Corps of Engineers.[1][4] The lake is fed by the St. Clair River, which flows to the south from Lake Huron and has an extensiveriver delta where it enters Lake St. Clair. This is the largest delta of the Great Lakes System.[1]
Other rivers which feed Lake St. Clair are theThames andSydenham rivers which originate inSouthwestern Ontario, and theClinton River, which originates in Michigan. The outflow from Lake St. Clair travels from its southwestern end into the Detroit River, and then intoLake Erie.
Thetarry time (i.e., the time between entering and leaving) of the water in Lake St. Clair averages about seven days, but this can vary from as little as two to as many as thirty days, depending on the direction of the winds, the water circulation patterns, and the amount of water that is flowing out of Lake Huron. For water flowing through the navigation channel, the time period is only about two days.[1]
Lake St. Clair is part of theGreat Lakes system, but very rarely included as one; the smallest Great Lake,Lake Ontario, is 17 times larger by surface area, and more than 80 times by volume. It is occasionally referred to as "the sixth Great Lake".[1][2] Scattered proposals have called for it to be officially recognized as a Great Lake, which might enable it to attract greater public funding forscientific research and other projects.[5]
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First Nations/Native Americans used the lake as part of their extensive navigation of the Great Lakes. TheMississauga called itWaawiyaataan(ong), meaning "(at) the whirlpool". TheWea derived their name from aMiami cognate:Waayaahtanonki.
In the latter part of the 17th century, the Mississauga established a village near the lake. Early French mapmakers had identified the lake by a variety of French and Iroquoian-language names, includingLac des Eaux de Mer [Seawater Lake];Lac Ganatchio ("kettle," for its shape), in FrenchLac de la Chaudière. A variety of Native names were associated with sweetness, as the lake was freshwater as opposed to saltwater. These includedOtsiketa (sugar or candy),Kandequio orKandekio (possibly candy),Oiatinatchiketo (probably a form of Otsiketa), andOiatinonchikebo. Similarly, the Iroquois nations called present-dayLake Huron a term meaning "The Grand Lake of the Sweet Sea" (fresh water as opposed to salt water.)
The French expressed this association on their maps asMer Douce (sweet sea) and the Dutch identified it in Latin asMare Dulce.[6]
On August 12, 1679, the French explorerRené Robert Cavelier, Sieur de La Salle arrived with an expedition. He named the body of waterLac Sainte-Claire, as the expedition sighted it on thefeast day ofSaint Clare of Assisi. The historian on the voyage,Louis Hennepin, recorded that theIroquoian tribes referred to the lake asOtseketa.[7]
As early as 1710, the English adopted the French name, identifying the lake on their maps as Saint Clare. By theMitchell Map in 1755, the spelling appeared as the shorter "St. Clair," the form that became most widely used.[8] Some scholars credit the name as honoring theAmerican Revolutionary War GeneralArthur St. Clair, later Governor of theNorthwest Territory, but the name Lake St. Clair was in use with this current spelling long before St. Clair became a notable figure. Together the place name and general's name likely influenced settlers' naming a proliferation of nearby political jurisdictions: the Michigan county and township of St. Clair, as well as the cities ofSt. Clair andSt. Clair Shores.
Some local historians attributed the namesake toPatrick Sinclair, a British officer who purchased land on theSt. Clair River at the outlet of thePine River. There, in 1764, he built Fort Sinclair, which was in use for nearly twenty years before being abandoned.[9]
Unlike most smaller lakes in the region—but like the Great Lakes—Lake comes at the front of its proper name, rather than the end; this is reflective of its French origins.
The Crawford Knoll Site located on the eastern branch of the St. Clair River delta uncovered bone and projectile points dating back to 1500 to 1000 BCE which suggest seasonal usage by the local Indigenous population.[10]
Lake St Clair's location, downstream from the largest freshwater delta in the Great Lakes, has a large effect on its turbidity (clarity). Current water quality is quite good despite past incidents and a history of chemical bio-accumulation. A number of cities source drinking water from or just downstream of the lake and quality is closely monitored.[11][12]
In the early 1970s, the Canadian and American governments closed the commercial fishery over concerns of bio-accumulation of mercury. The industry responsible for this contamination was the Dow Chemical Chlor-Alkali Plant in Sarnia, Ontario. Since 1949, Dow Chemical had been operating mercury cell plants for the production of chlorine and other chemicals. Through its production process, it discharged mercury into the river and contaminated the fishery. The fishery has since not been re-opened, although studies have now confirmed mercury levels are well within the safe range.[13]
Sport fishing remains popular in the lake. The governments on both sides of the lakes continue to monitor and publish guides for sport fish consumption.[14][15]
Manyyacht clubs (boating and sailing clubs) are located along the shores. Some of these include:
| Topics | .jpg) | |
|---|---|---|
| Detroit | ||
| Municipalities over 80,000 | ||
| Municipalities 40,000 to 80,000 | ||
| Cultural enclaves | ||
| Satellite cities | ||
| Counties in MSA | ||
| Counties in CSA | ||
Parks inmetropolitan Detroit | ||
|---|---|---|
| Detroit city |
|  |
| Metro 600 to 1,500 acres (243 to 607 ha) | ||
| 1,500 to 5,000 acres (607 to 2,023 ha) | ||
| over 5,000 acres (2,023 ha) | ||
| Waterways | ||
| Major beaches | ||
| Trails 5 to 36 miles (8 to 58 km) | ||
| Zoological and botanical | ||
| International | |
|---|---|
| National | |
| Other | |
