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A meromictic lake is a
lake A lake is an area filled with water, localized in a basin, surrounded by land, and distinct from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, although, like the much lar ...
which has layers of water that do not intermix. In ordinary,
holomictic lake Holomictic lakes are lakes that have a uniform temperature and density from surface to bottom at a specific time during the year, which allows the lake waters to mix in the absence of stratification. Details Holomictic lakes mix at least occa ...
s, at least once each year, there is a physical mixing of the surface and the deep waters. The term ''meromictic'' was coined by the Austrian Ingo Findenegg in 1935, apparently based on the older word ''holomictic''. The concepts and terminology used in describing meromictic lakes were essentially complete following some additions by
G. Evelyn Hutchinson George Evelyn Hutchinson (January 30, 1903 – May 17, 1991) was a British ecologist sometimes described as the "father of modern ecology." He contributed for more than sixty years to the fields of limnology, systems ecology, radiation ecolog ...
in 1937.


Characteristics

Most lakes are ''holomictic''; that is, at least once per year, physical mixing occurs between the surface and the deep waters. In so-called monomictic lakes, the mixing occurs once per year; in dimictic lakes, the mixing occurs twice a year (typically spring and autumn), and in polymictic lakes, the mixing occurs several times a year. In meromictic lakes, however, the layers of the lake water can remain unmixed for years, decades, or centuries. Meromictic lakes can usually be divided into three sections or layers. The bottom layer is known as the ''monimolimnion''; the waters in this portion of the lake circulate little, and are generally hypoxic and saltier than the rest of the lake. The top layer is called the ''mixolimnion'', and essentially behaves like a holomictic lake. The area in between is referred to as the
chemocline A chemocline is a type of cline, a layer of fluid with different properties, characterized by a strong, vertical chemistry gradient within a body of water. In bodies of water where chemoclines occur, the cline separates the upper and lower layer ...
, also called the chemolimnion. The lack of mixing between layers creates radically different environments for organisms to live in: among the consequences of this stratification, or stable layering, of lake waters is that the bottom layer receives little oxygen from the atmosphere, hence becomes depleted of oxygen. While the surface layer may have 10 mg/L or more dissolved oxygen in summer, the depths of a meromictic lake can have less than 1 mg/L. Very few organisms can live in such an oxygen-poor environment. One exception is
purple sulfur bacteria The purple sulfur bacteria (PSB) are part of a group of Pseudomonadota capable of photosynthesis, collectively referred to as purple bacteria. They are anaerobic or microaerophilic, and are often found in stratified water environments includ ...
. These bacteria, commonly found at the top of the monimolimnion in such lakes, use
sulfur Sulfur (or sulphur in British English) is a chemical element with the symbol S and atomic number 16. It is abundant, multivalent and nonmetallic. Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formul ...
compounds such as
sulfides Sulfide ( British English also sulphide) is an inorganic anion of sulfur with the chemical formula S2− or a compound containing one or more S2− ions. Solutions of sulfide salts are corrosive. ''Sulfide'' also refers to chemical compounds ...
in
photosynthesis Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's activities. Some of this chemical energy is stored i ...
. These compounds are produced by decomposition of organic sediments in oxygen-poor environments. The monimolimnion is often rich in phosphorus and nitrogen. These factors combine to create an ideal environment for bacterial growth. The mixolimnion can have similar qualities. However, the types of bacteria that can grow at the surface are determined by the amount of light received at the surface. A meromictic lake may form because the basin is unusually deep and steep-sided compared to the lake's surface area, or because the lower layer of the lake is highly saline and denser than the upper layers of water. Stratification in meromictic lakes can be either endogenic or ectogenic. Endogenic means the patterns seen in the lake are caused by internal events, such as organic matter accumulating in the sediments and decaying, whereas ectogenic means the patterns seen are caused by external causes, like an intrusion of saltwater settling in the
hypolimnion The hypolimnion or under lake is the dense, bottom layer of water in a thermally- stratified lake. The word hypolimnion is derived from the Greek "limnos" meaning "lake". It is the layer that lies below the thermocline. Typically the hypolimnio ...
, preventing it from mixing. The layers of sediment at the bottom of a meromictic lake remain relatively undisturbed because there is little physical mixing and few living organisms to agitate them. There is also little chemical decomposition. For this reason, cores of the sediment at the bottom of meromictic lakes are important in tracing past changes in climate at the lake, by examining trapped pollen grains and the types of sediments ee Proxy (climate)">Proxy_(climate).html" ;"title="ee Proxy (climate)">ee Proxy (climate) When the layers do mix for whatever reason, the consequences can be devastating for organisms that normally live in the mixolimnion. This layer is usually much smaller in volume than the monimolimnion. When the layers mix, the oxygen concentration at the surface will decrease dramatically. This can result in the death of many organisms, such as fish, that require oxygen. Occasionally, carbon dioxide or other dissolved gases can build up relatively undisturbed in the lower layers of a meromictic lake. When the stratification is disturbed, as could happen from an earthquake, a limnic eruption may result. In 1986, Lake Nyos disaster, a notable event of this type took place at
Lake Nyos Lake Nyos ( ) is a crater lake in the Region of Cameroon, located about northwest of Yaoundé, the capital. Nyos is a deep lake high on the flank of an inactive volcano in the Oku volcanic plain along the Cameroon line of volcanic activity ...
in
Cameroon Cameroon (; french: Cameroun, ff, Kamerun), officially the Republic of Cameroon (french: République du Cameroun, links=no), is a country in west- central Africa. It is bordered by Nigeria to the west and north; Chad to the northeast; th ...
, causing nearly 1,800 deaths. While it is mainly lakes that are meromictic, the world's largest meromictic basin is the
Black Sea The Black Sea is a marginal mediterranean sea of the Atlantic Ocean lying between Europe and Asia, east of the Balkans, south of the East European Plain, west of the Caucasus, and north of Anatolia. It is bounded by Bulgaria, Georgia, ...
. The deep waters below do not mix with the upper layers that receive oxygen from the atmosphere. As a result, over 90% of the deeper Black Sea volume is
anoxic water Anoxic waters are areas of sea water, fresh water, or groundwater that are depleted of dissolved oxygen. The US Geological Survey defines anoxic groundwater as those with dissolved oxygen concentration of less than 0.5 milligrams per litre. Ano ...
. The
Caspian Sea The Caspian Sea is the world's largest inland body of water, often described as the List of lakes by area, world's largest lake or a full-fledged sea. An endorheic basin, it lies between Europe and Asia; east of the Caucasus, west of the broad s ...
is anoxic below . The
Baltic Sea The Baltic Sea is an arm of the Atlantic Ocean that is enclosed by Denmark, Estonia, Finland, Germany, Latvia, Lithuania, Poland, Russia, Sweden and the North and Central European Plain. The sea stretches from 53°N to 66°N latitude and fr ...
is persistently stratified, with dense, highly saline water comprising the bottom layer, and large areas of hypoxic sediments (see Baltic Sea hypoxia).


List of meromictic lakes

There are meromictic lakes all over the world. The distribution appears to be clustered, but this may be due to incomplete investigations. Depending on the exact definition of "meromictic", the ratio between meromictic and holomictic lakes worldwide is around 1:1000.


Africa

*
Lake Nyos Lake Nyos ( ) is a crater lake in the Region of Cameroon, located about northwest of Yaoundé, the capital. Nyos is a deep lake high on the flank of an inactive volcano in the Oku volcanic plain along the Cameroon line of volcanic activity ...
and
Lake Monoun Lake Monoun is a crater lake ( maar) in West Province, Cameroon, that lies in the Oku Volcanic Field. On August 15, 1984, a limnic eruption occurred at the lake, which resulted in the release of a large amount of carbon dioxide () that killed 3 ...
in
Cameroon Cameroon (; french: Cameroun, ff, Kamerun), officially the Republic of Cameroon (french: République du Cameroun, links=no), is a country in west- central Africa. It is bordered by Nigeria to the west and north; Chad to the northeast; th ...
*
Lake Kivu Lake Kivu is one of the African Great Lakes. It lies on the border between the Democratic Republic of the Congo and Rwanda, and is in the Albertine Rift, the western branch of the East African Rift. Lake Kivu empties into the Ruzizi River, whi ...
in Rwanda and the
Democratic Republic of the Congo The Democratic Republic of the Congo (french: République démocratique du Congo (RDC), colloquially "La RDC" ), informally Congo-Kinshasa, DR Congo, the DRC, the DROC, or the Congo, and formerly and also colloquially Zaire, is a country in ...
*
Lake Tanganyika Lake Tanganyika () is an African Great Lake. It is the second-oldest freshwater lake in the world, the second-largest by volume, and the second-deepest, in all cases after Lake Baikal in Siberia. It is the world's longest freshwater lake. T ...
in
Burundi Burundi (, ), officially the Republic of Burundi ( rn, Repuburika y’Uburundi ; Swahili: ''Jamuhuri ya Burundi''; French: ''République du Burundi'' ), is a landlocked country in the Great Rift Valley at the junction between the African Gr ...
, the Democratic Republic of the Congo,
Tanzania Tanzania (; ), officially the United Republic of Tanzania ( sw, Jamhuri ya Muungano wa Tanzania), is a country in East Africa within the African Great Lakes region. It borders Uganda to the north; Kenya to the northeast; Comoro Islands ...
and
Zambia Zambia (), officially the Republic of Zambia, is a landlocked country at the crossroads of Central, Southern and East Africa, although it is typically referred to as being in Southern Africa at its most central point. Its neighbours are ...
*
Lake Malawi Lake Malawi, also known as Lake Nyasa in Tanzania and Lago Niassa in Mozambique, is an African Great Lake and the southernmost lake in the East African Rift system, located between Malawi, Mozambique and Tanzania. It is the fifth largest fres ...
, located between
Malawi Malawi (; or aláwi Tumbuka: ''Malaŵi''), officially the Republic of Malawi, is a landlocked country in Southeastern Africa that was formerly known as Nyasaland. It is bordered by Zambia to the west, Tanzania to the north and northe ...
,
Mozambique Mozambique (), officially the Republic of Mozambique ( pt, Moçambique or , ; ny, Mozambiki; sw, Msumbiji; ts, Muzambhiki), is a country located in southeastern Africa bordered by the Indian Ocean to the east, Tanzania to the north, Mala ...
and Tanzania


Antarctica

*
Lake Vanda Lake Vanda is a lake in Wright Valley, Victoria Land, Ross Dependency, Antarctica. The lake is long and has a maximum depth of . On its shore, New Zealand maintained Vanda Station from 1968 to 1995. Lake Vanda is a hypersaline lake with a sali ...
in
Ross Dependency The Ross Dependency is a region of Antarctica defined by a sector originating at the South Pole, passing along longitudes 160° east to 150° west, and terminating at latitude 60° south. It is claimed by New Zealand, a claim accepted only ...
* 21 lakes, including Organic Lake in
Vestfold Hills The Vestfold Hills are rounded, rocky, coastal hills, in extent, on the north side of Sorsdal Glacier on the Ingrid Christensen Coast of Princess Elizabeth Land, Antarctica. The hills are subdivided by three west-trending peninsulas bounded by n ...


Asia

* Lake Shira in the
Republic of Khakassia Khakassia (russian: Хакасия; kjh, Хакасия, Хакас Чирі, ''Khakasiya'', ''Khakas Çiri''), officially the Republic of Khakassia (russian: Республика Хакасия, r=Respublika Khakasiya, ; kjh, Хакас Рес ...
,
Russia Russia (, , ), or the Russian Federation, is a transcontinental country spanning Eastern Europe and Northern Asia. It is the largest country in the world, with its internationally recognised territory covering , and encompassing one-eigh ...
*
Keracut Beach Keracut Beach is a beach in Penang National Park, Southwest Penang Island District, Penang, Malaysia. It is one of the remotest beaches in Penang and is located on the west coast of the cape at the northwest of Penang Island. It shelters a merom ...
Lake, Penang National Park, northwest
Penang Penang ( ms, Pulau Pinang, is a Malaysian state located on the northwest coast of Peninsular Malaysia, by the Malacca Strait. It has two parts: Penang Island, where the capital city, George Town, is located, and Seberang Perai on the Ma ...
island,
Malaysia Malaysia ( ; ) is a country in Southeast Asia. The federation, federal constitutional monarchy consists of States and federal territories of Malaysia, thirteen states and three federal territories, separated by the South China Sea into two r ...
*
Jellyfish Lake Jellyfish Lake ( pau, Ongeim'l Tketau, lit=Fifth Lake) is a marine lake located on Eil Malk island in Palau. Eil Malk is part of the Rock Islands, a group of small, rocky, mostly uninhabited islands in Palau's Southern Lagoon, between Koror an ...
, on
Eil Malk Eil Malk or Mecherchar is the main island of the Mecherchar Islands, an island group of Palau in the Pacific Ocean. In a more narrow sense, just the southeastern peninsula of Mecherchar is called Eil Malk. Geography Eil Malk is located 23 ki ...
in
Palau Palau,, officially the Republic of Palau and historically ''Belau'', ''Palaos'' or ''Pelew'', is an island country and microstate in the western Pacific. The nation has approximately 340 islands and connects the western chain of the Ca ...
* Zigetangcuo Lake, a crenogenic lake in
Nagqu Nagqu (also Naqu, Nakchu, or Nagchu; ; ) is a prefecture-level city in the north of the Chinese autonomous region of Tibet. On May 7, 2018, the former Nagqu Prefecture was officially declared the sixth prefecture-level city in Tibet after Lhasa, ...
,
Tibet Tibet (; ''Böd''; ) is a region in East Asia, covering much of the Tibetan Plateau and spanning about . It is the traditional homeland of the Tibetan people. Also resident on the plateau are some other ethnic groups such as Monpa people, ...
, China. It is the meromictic lake located at the highest altitude. * Kaptai Lake, in
Rangamati Hill District Rangamati Hill District (Chakma:𑄢𑄋𑄟𑄖𑄴𑄳𑄠 ;) is a district in south-eastern Bangladesh. It is a part of the Chattogram Division, and the town of Rangamati serves as the headquarters of the district. By area, Rangamati is t ...
, at the southeastern part of Bangladesh. It was created by constructing a dam at Kaptai to set up a hydroelectric power plant. *
Lake Matano Lake Matano ( id, Danau Matano), also known as Matana, is a natural lake in East Luwu Regency, South Sulawesi province, Indonesia. With a depth of , it is the deepest lake in Indonesia (ranked by maximum depth), the 10th deepest lake in the w ...
, Sulawesi island, Indonesia


Australia

*
Lake Fidler Lake Fidler is a meromictic lake beside the Gordon River in the Tasmanian Wilderness World Heritage Site area of the west coast of Tasmania, Australia. The lake has a layer of fresh water overlying an anoxic salt water layer. The meromict ...
, in the Tasmanian Wilderness World Heritage Area


Europe

* (Alpine lakes in the Austrian province of Carinthia; studied by Ingo Findenegg in the 1930s). *
Alatsee Alatsee is a meromictic lake in Ostallgäu, Bavaria, Germany Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous ...
(small alpine lake in Germany's state of
Bavaria Bavaria ( ; ), officially the Free State of Bavaria (german: Freistaat Bayern, link=no ), is a state in the south-east of Germany. With an area of , Bavaria is the largest German state by land area, comprising roughly a fifth of the total l ...
, near the city of
Füssen Füssen is a town in Bavaria, Germany, in the district of Ostallgäu, situated one kilometre from the Austrian border. The town is known for violin manufacturing and as the closest transportation hub for the Neuschwanstein and Hohenschwangau c ...
and
Neuschwanstein Castle Neuschwanstein Castle (german: Schloss Neuschwanstein, , Southern Bavarian: ''Schloss Neischwanstoa'') is a 19th-century historicist palace on a rugged hill above the village of Hohenschwangau near Füssen in southwest Bavaria, Germany. Th ...
) * Lake in
Finland Finland ( fi, Suomi ; sv, Finland ), officially the Republic of Finland (; ), is a Nordic country in Northern Europe. It shares land borders with Sweden to the northwest, Norway to the north, and Russia to the east, with the Gulf of Bo ...
* Lake in Finland * Lough Furnace in Ireland * Salvatnet, Kilevann, Tronstadvatn, Birkelandsvatn, Rørholtfjorden, Botnvatn, Rørhopvatn and Strandvatn lakes in
Norway Norway, officially the Kingdom of Norway, is a Nordic country in Northern Europe, the mainland territory of which comprises the western and northernmost portion of the Scandinavian Peninsula. The remote Arctic island of Jan Mayen and t ...
* Czarne Lake in Drawa National Park,
Poland Poland, officially the Republic of Poland, , is a country in Central Europe. Poland is divided into Voivodeships of Poland, sixteen voivodeships and is the fifth most populous member state of the European Union (EU), with over 38 mill ...
* Lake
Mogilnoye Lake Mogilnoye (russian: Могильное озеро) is a small salt/fresh-water lake on the Kildin Island, Murmansk Oblast, Russia Russia (, , ), or the Russian Federation, is a List of transcontinental countries, transcontinental ...
in
Murmansk Oblast Murmansk Oblast (russian: Му́рманская о́бласть, p=ˈmurmənskəjə ˈobləsʲtʲ, r=Murmanskaya oblast, ''Murmanskaya oblast''; Kildin Sami: Мурман е̄ммьне, ''Murman jemm'ne'') is a federal subject (an oblast) o ...
of
Russia Russia (, , ), or the Russian Federation, is a transcontinental country spanning Eastern Europe and Northern Asia. It is the largest country in the world, with its internationally recognised territory covering , and encompassing one-eigh ...
* Lakes El Tobar and La Cruz in Spain * Lake Cadagno, crenogenic, in Switzerland, and the location of the Alpine Biology Center *
Lac Pavin Lac Pavin is a meromictic crater lake located in the Puy-de-Dôme department of France, between Besse-en-Chandesse and Super-Besse Super Besse is a winter sports resort located in Massif Central, France. Geography Super Besse located in t ...
and in France * The
Black Sea The Black Sea is a marginal mediterranean sea of the Atlantic Ocean lying between Europe and Asia, east of the Balkans, south of the East European Plain, west of the Caucasus, and north of Anatolia. It is bounded by Bulgaria, Georgia, ...
is also considered to be meromictic.


North America

* Canada ** Lake McKay in
Ottawa, Ontario Ottawa (, ; Canadian French: ) is the capital city of Canada. It is located at the confluence of the Ottawa River and the Rideau River in the southern portion of the province of Ontario. Ottawa borders Gatineau, Quebec, and forms the core ...
** Lakes A and C1 on
Ellesmere Island Ellesmere Island ( iu, script=Latn, Umingmak Nuna, lit=land of muskoxen; french: île d'Ellesmere) is Canada's northernmost and third largest island, and the tenth largest in the world. It comprises an area of , slightly smaller than Great Bri ...
,
Nunavut Nunavut ( , ; iu, ᓄᓇᕗᑦ , ; ) is the largest and northernmost territory of Canada. It was separated officially from the Northwest Territories on April 1, 1999, via the '' Nunavut Act'' and the '' Nunavut Land Claims Agreement Act'' ...
**
Blackcat Lake {{cite news , url = https://nmc-mic.ca/sites/default/files/ccna-attachments/wb2005.pdf , title = Scientists nominate Clear Lake as UNESCO World Heritage Site , work = Haliburton Echo The ''Haliburton County Echo'' is a weekl ...
near Dorset, Ontario, in Frost Centre ** Crawford Lake near
Milton, Ontario Milton (2016 census population 110,128) is a town in Southern Ontario, Canada, and part of the Halton Region in the Greater Toronto Area. Between 2001 and 2011, Milton was the fastest growing municipality in Canada, with a 71.4% increase in popul ...
**
Picard Lake Picard may refer to: *Picardy, a region of France *Picard language, a language of France *Jean-Luc Picard, a fictional character in the ''Star Trek'' franchise Places * Picard, California, USA * Picard, Quebec, Canada * Picard (crater), a lunar i ...
near Lakehurst, Ontario ** Mahoney Lake in the
Okanagan Valley The Okanagan ( ), also known as the Okanagan Valley and sometimes as the Okanagan Country, is a region in the Canadian province of British Columbia defined by the basin of Okanagan Lake and the Canadian portion of the Okanagan River. It is ...
,
British Columbia British Columbia (commonly abbreviated as BC) is the westernmost Provinces and territories of Canada, province of Canada, situated between the Pacific Ocean and the Rocky Mountains. It has a diverse geography, with rugged landscapes that include ...
** McGinnis Lake in
Petroglyphs Provincial Park Petroglyphs Provincial Park is a historical-class provincial park situated in Woodview, Ontario, Canada, northeast of Peterborough. It has the largest collection of ancient First Nations petroglyphs (rock carvings) in Ontario. The carvings we ...
, Ontario ** Pink Lake in
Gatineau Park Gatineau Park (french: Parc de la Gatineau) is a federal park located in the Outaouais region of Quebec, Canada. Administered by the National Capital Commission as part of the National Capital Region, Gatineau Park is a wedge of land extendi ...
,
Quebec Quebec ( ; )According to the Government of Canada, Canadian government, ''Québec'' (with the acute accent) is the official name in Canadian French and ''Quebec'' (without the accent) is the province's official name in Canadian English is ...
**
Powell Lake Powell Lake is a lake in the northern Sunshine Coast region of British Columbia, Canada, adjacent to the city of Powell River, which sits on the low rise of land forming a natural dam between the lake and the Strait of Georgia. The lake flows ...
in the town of Powell River, British Columbia ** Sunfish Lake near
Waterloo, Ontario Waterloo is a city in the Canadian province of Ontario. It is one of three cities in the Regional Municipality of Waterloo (formerly Waterloo County). Waterloo is situated about west-southwest of Toronto. Due to the close proximity of the c ...
** Little Round Lake (Ontario) in
Central Frontenac, Ontario Central Frontenac is a township in eastern Ontario, Canada in the County of Frontenac. Central Frontenac was created in 1998 through an amalgamation of the Townships of Hinchinbrooke, Kennebec, Olden and Oso. Communities There are 28 communitie ...
** Teapot Lake, Heart Lake Conservation Area,
Brampton, Ontario Brampton ( or ) is a city in the Canadian province of Ontario. Brampton is a city in the Greater Toronto Area (GTA) and is a lower-tier municipality within Peel Region. The city has a population of 656,480 as of the 2021 Census, making it th ...
. See also Heart Lake (Ontario) * Central America **
Lake Atitlán Lake Atitlán ( es, links=no, Lago de Atitlán, ) is a lake in the Guatemalan Highlands of the Sierra Madre mountain range. The lake is located in the Sololá Department of southwestern Guatemala. It is known as the deepest lake in Central Ame ...
,
endorheic lake An endorheic lake (also called a sink lake or terminal lake) is a collection of water within an endorheic basin, or sink, with no evident outlet. Endorheic lakes are generally saline as a result of being unable to get rid of solutes left in the l ...
in the department of
Sololá __NOTOC__ Sololá is a city in Guatemala. It is the capital of the department of Sololá and the administrative seat of Sololá municipality. It is located close to Lake Atitlan. The name is a Hispanicized form of its pre-Columbian name, one s ...
, Guatemala * United States ** Ballston Lake, north northwest of
Albany, New York Albany ( ) is the capital of the U.S. state of New York, also the seat and largest city of Albany County. Albany is on the west bank of the Hudson River, about south of its confluence with the Mohawk River, and about north of New York Ci ...
** Big Soda Lake, Nevada ** Brownie Lake near Minneapolis, Minnesota ** Canyon Lake near Big Bay, Michigan ** Chapel Lake, in
Pictured Rocks National Lakeshore Pictured Rocks National Lakeshore is a U.S. National Lakeshore in the Upper Peninsula of Michigan, United States. It extends for 42 miles (67 km) along the shore of Lake Superior and covers . The park has extensive views of the hilly shor ...
, near
Munising, Michigan Munising ( ') is a city in Alger County in the U.S. state of Michigan. The population was 2,355 at the 2010 census. It is the county seat of Alger County. The city is partially surrounded by Munising Township, but the two are administered auton ...
** Great Salt Lake near
Salt Lake City Salt Lake City (often shortened to Salt Lake and abbreviated as SLC) is the capital and most populous city of Utah, United States. It is the seat of Salt Lake County, the most populous county in Utah. With a population of 200,133 in 2020, th ...
, Utah ** Green Lake and Round Lake in Green Lakes State Park near Syracuse, New York ** Hot Lake in
Okanogan County Okanogan County () is a county located in the U.S. state of Washington along the Canada–U.S. border. As of the 2020 census, the population was 42,104. The county seat is Okanogan, while the largest city is Omak. Its area is the largest i ...
,
Washington Washington commonly refers to: * Washington (state), United States * Washington, D.C., the capital of the United States ** A metonym for the federal government of the United States ** Washington metropolitan area, the metropolitan area centered o ...
**
Irondequoit Bay Irondequoit Bay is a large body of water located in northeastern Monroe County, New York. The bay, roughly wide and in length, is fed by Irondequoit Creek to the south and flows into Lake Ontario at its northern end. On average, the surface o ...
near
Rochester, New York Rochester () is a city in the U.S. state of New York, the seat of Monroe County, and the fourth-most populous in the state after New York City, Buffalo, and Yonkers, with a population of 211,328 at the 2020 United States census. Located i ...
, is also considered meromictic; use of road salt has been cited as the main reason for its change ** Knaack Lake, Wisconsin ** Lake Mary, in the northwest corner of Vilas County, Wisconsin **
Lower Mystic Lake The Mystic Lakes, consisting of Upper Mystic Lake and Lower Mystic Lake, are closely linked bodies of water in the northwestern suburbs of Boston, Massachusetts. The lakes lie at an elevation of 1 meter above sea level, within the towns of Winch ...
in Arlington and
Medford, Massachusetts Medford is a city northwest of downtown Boston on the Mystic River in Middlesex County, Massachusetts, United States. At the time of the 2020 U.S. Census, Medford's population was 59,659. It is home to Tufts University, which has its campus al ...
** Redoubt Lake near
Sitka, Alaska russian: Ситка , native_name_lang = tli , settlement_type = Consolidated city-borough , image_skyline = File:Sitka 84 Elev 135.jpg , image_caption = Downtown Sitka in 1984 , image_size ...
; one of North America's largest meromictic lakes ** Soap Lake in Washington


References


External links


"Density Stratification"
part of an educational websit
Water on the Web
operated by the University of Minnesota, Duluth. Retrieved 11-March-2007.
photo-outing.com review over Pantai Kerachut with Memomictic lake
{{portalbar, Lakes Lakes by type *