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Green Lake (Wisconsin)
Green Lake — also known as Big Green Lake (to distinguish it from Little Green Lake, which is near Markesan)— is a lake in Green Lake County, Wisconsin, United States. Green Lake has a maximum depth of , making it the deepest natural inland lake in Wisconsin and the second largest by volume. The lake covers and has an average depth of . Green Lake has of diverse shoreline, ranging from sandstone bluffs to marshes. History First Settlers The Ho-Chunk Nation of Wisconsin, also referred to as the Winnebago, were some of the first residents in the Green Lake Area. Green Lake, also known as Daycholah, is a spiritual place for the Winnebago. One legend describes how one must bring gifts for the Water Spirit that lives under the lake in order to enter. With the increase of European settlers, the Winnebago were subject to forced relocation by the United States government several times. Once they were removed from the Green Lake area, they were moved to Iowa until the establish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Green Lake, Wisconsin
Green Lake is a city in Green Lake County, Wisconsin, United States. The population was 960 at the 2010 census. The city is located on the north side of Green Lake. The city of Green Lake is the county seat for the county of Green Lake. The Town of Green Lake is located on the south side of Big Green Lake, opposite the city. Geography According to the United States Census Bureau, the city has a total area of , of which, is land and is water. Green Lake is the second deepest inland lake in Wisconsin, second only to Wazee Lake near Black River Falls. Measuring 239 feet deep at its greatest depth, Green Lake is the deepest natural inland lake in the state of Wisconsin. Demographics 2010 census As of the census of 2010, there were 960 people, 491 households, and 254 families living in the city. The population density was . There were 766 housing units at an average density of . The racial makeup of the city was 98.8% White, 0.2% African American, 0.2% Native American, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drumlin
A drumlin, from the Irish word ''droimnín'' ("littlest ridge"), first recorded in 1833, in the classical sense is an elongated hill in the shape of an inverted spoon or half-buried egg formed by glacial ice acting on underlying unconsolidated till or ground moraine. Assemblages of drumlins are referred to as fields or swarms; they can create a landscape which is often described as having a 'basket of eggs topography'. The low ground between two drumlins is known as a dungeon; dungeons have colder microclimates in winter from settling cold air. Morphology Drumlins occur in various shapes and sizes, including symmetrical (about the long axis), spindle, parabolic forms, and transverse asymmetrical forms. Generally, they are elongated, oval-shaped hills, with a long axis parallel to the orientation of ice flow and with an up-ice (stoss) face that is generally steeper than the down-ice (lee) face. Drumlins are typically 250 to 1,000 meters long and between 120 and 300 meters w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muskgrass
''Chara'' is a genus of charophyte green algae in the family Characeae. They are multicellular and superficially resemble land plants because of stem-like and leaf-like structures. They are found in freshwater, particularly in limestone areas throughout the northern temperate zone, where they grow submerged, attached to the muddy bottom. They prefer less oxygenated and hard water and are not found in waters where mosquito larvae are present. They are covered with calcium carbonate deposits and are commonly known as stoneworts. Cyanobacteria have been found growing as epiphytes on the surfaces of ''Chara'', where they may be involved in fixing nitrogen, which is important to plant nutrition. Structure The branching system of ''Chara'' species is complex with branches derived from apical cells which cut off segments at the base to form nodal and internodal cells alternately.Round, F.E. 1965.''The Biology of the algae.'' Ernest Arnold. The main axes bear whorls of branches in a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sagittaria Rigida
''Sagittaria rigida'', the sessilefruit arrowhead or Canadian arrowhead, is an aquatic plant species native to Canada and to the United States and also naturalized in Great Britain Great Britain is an island in the North Atlantic Ocean off the northwest coast of continental Europe. With an area of , it is the largest of the British Isles, the largest European island and the ninth-largest island in the world. It is .... It grows in shallow waters along the edges of ponds and streams. What is really interesting is that it has narrow oval leaves rather than the iconic arrowhead shaped leaves of species like the Sagittaria latifolia. it has sessile female flowers, which is where it gets its name from. Its flowers are very similar to other plants in the Sagittaria family, with three white petals. It grows "potato" like tubers which can be eaten. Gathering any tubers from the Sagittaria family can be dangerous if gathered from polluted water. References rigida Freshwa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceratophyllum
''Ceratophyllum'' is a cosmopolitan genus of flowering plants including four accepted living species in 2016, commonly found in ponds, marshes, and quiet streams in tropical and in temperate regions. It is the only extant genus in the family Ceratophyllaceae, itself the only extant family in the order Ceratophyllales. They are usually called coontails or hornworts, although hornwort is also used for unrelated plants of the division Anthocerotophyta. ''Ceratophyllum'' grows completely submerged, usually, though not always, floating on the surface, and does not tolerate drought. The plant stems can reach 1–3 m in length. At intervals along nodes of the stem they produce rings of bright green leaves, which are narrow and often much-branched. The forked leaves are brittle and stiff to the touch in some species, softer in others. Roots are completely absent and are missing even in the embryonic stage, but sometimes they develop modified leaves with a rootlike appearance, which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White Water Lily
White waterlily can mean: * ''Nymphaea alba'', of Europe and North Africa * '' Nymphaea lotus'', of East Africa and Southeast Asia * ''Nymphaea nouchali'', of South Asia, Southeast Asia and Northern Australia * ''Nymphaea odorata ''Nymphaea odorata'', also known as the American white waterlily, fragrant water-lily, beaver root, fragrant white water lily, white water lily, sweet-scented white water lily, and sweet-scented water lily, is an aquatic plant belonging to the ge ...'', of North America * '' Nymphaea pubescens'', of South Asia and Southeast Asia {{plant common name ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bristly Sedge
''Carex comosa'' is a species of sedge known as longhair sedge and bristly sedge. It is native to North America, where it grows in western and eastern regions of Canada and the United States, and parts of Mexico. It grows in wet places, including meadows and many types of wetlands. Tolerates deeper water than most common species and is good for retention basins. This sedge produces clumps of triangular stems up to 100 or 120 centimeters tall from short rhizomes. The inflorescence is up to 35 centimeters long and has a long bract In botany, a bract is a modified or specialized leaf, especially one associated with a reproductive structure such as a flower, inflorescence axis or cone scale. Bracts are usually different from foliage leaves. They may be smaller, larger, or of ... which is longer than the spikes. It is a cluster of several cylindrical spikes. The scales over the fruits taper into long, thin awns. References External linksJepson Manual Treatment [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epilimnion
The epilimnion or surface layer is the top-most layer in a thermally stratified lake. It sits above the deeper metalimnion and hypolimnion. It is typically warmer and has a higher pH and higher dissolved oxygen concentration than the hypolimnion. Physical Structure Properties In the water column, the epilimnion sits above all other layers. The epilimnion is only present in stratified lakes. On the topside of the epilimnion it is in contact with air, which leaves it open to wind action, which allows the water to experience turbulence. Turbulence and convection work together to make waves which increases aeration. On the bottom side of the epilimnion is the metalimnion, which contains the thermocline. The thermocline is created because of the difference in temperature between the epilimnion and the metalimnion. This is due to the fact that since the epilimnion is in contact with air and is above everything, it interacts with the sun and heat more, making it warmer than the l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 hypolimnion is the coldest layer of a lake in summer, and the warmest layer during winter. In deep, temperate lakes, the bottom-most waters of the hypolimnion are typically close to 4 °C throughout the year. The hypolimnion may be much warmer in lakes at warmer latitudes. Being at depth, it is isolated from surface wind-mixing during summer, and usually receives insufficient irradiance (light) for photosynthesis to occur. Oxygen dynamics The deepest portions of the hypolimnion have low oxygen concentrations. In eutrophic lakes, the hypolimnion is often anoxic. Deep mixing of lakes during the fall and early winter allows oxygen to be transported from the epilimnion to the hypolimnion. The cooling of the epilimnion during the fall reduces l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thermocline
A thermocline (also known as the thermal layer or the metalimnion in lakes) is a thin but distinct layer in a large body of fluid (e.g. water, as in an ocean or lake; or air, e.g. an atmosphere) in which temperature changes more drastically with depth than it does in the layers above or below. In the ocean, the thermocline divides the upper mixed layer from the calm deep water below. Depending largely on season, latitude, and turbulent mixing by wind, thermoclines may be a semi-permanent feature of the body of water in which they occur, or they may form temporarily in response to phenomena such as the radiative heating/cooling of surface water during the day/night. Factors that affect the depth and thickness of a thermocline include seasonal weather variations, latitude, and local environmental conditions, such as tides and currents. Oceans Most of the heat energy of the sunlight that strikes the Earth is absorbed in the first few centimeters at the ocean's surface, whi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Retention Time
Lake retention time (also called the residence time of lake water, or the water age or flushing time) is a calculated quantity expressing the mean time that water (or some dissolved substance) spends in a particular lake. At its simplest, this figure is the result of dividing the lake volume by the flow in or out of the lake. It roughly expresses the amount of time taken for a substance introduced into a lake to flow out of it again. The retention time is especially important where pollutants are concerned. Global retention time The global retention time for a lake (the overall mean time that water spends in the lake) is calculated by dividing the lake volume by either the mean rate of inflow of all tributaries, or by the mean rate of outflow (ideally including evaporation and seepage). This metric assumes that water in the lake is well-mixed (rather than stratified), so that any portion of the lake water is much like any other. In reality, larger and deeper lakes are generally ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fox River (Green Bay Tributary)
The Fox River is a river in eastern Wisconsin in the Great Lakes region of the United States. It is the principal tributary of the Bay of Green Bay, and via the Bay, the largest tributary of Lake Michigan. The well-known city of Green Bay, one of the first European settlements in North America, is on the river at its mouth on lower Green Bay. Hydrographers divide the Fox into two distinct sections, the Upper Fox River, flowing from its headwaters in south-central Wisconsin northeasterly into Lake Winnebago, and the Lower Fox River, flowing from Lake Winnebago northeasterly to lower Green Bay. Together, the two sections give the Fox River a length of .U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map, accessed December 19, 2011 Counting the distance through Lake Winnebago gives a total of . The Fox River (Green Bay tributary) should not be confused with the Fox River (Illinois River tributary) which also flows through Wisco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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