| Eels Lake | |
|---|---|
  Eels Lake | |
| Location | Ontario |
| Coordinates | 44°53′17″N78°07′37″W / 44.888°N 78.127°W |
| Basin countries | Canada |
Eels Lake is a lake located between the Kawartha lakes and Haliburton Highlands region of Ontario, Canada. The lake is about 974.8 hectares.
Eel Cow, an Ojibwe chieftain, for which the lake is named, claimed this area and surrounding land as his family's hunting and fishing territory in the early 1800s.
The many islands and bays found in the lake make for ideal smallmouth bass, largemouth bass and Rock bass habitat. The lake also has natural population of lake trout, walleye, and yellow perch. In order to help preserve the natural lake trout population of Eels Lake, slot size and winter ice fishing restrictions are in place.
Eels Lake has high water clarity and good water quality, with Secchi depths usually ranging from 4 to 6 meters. Chlorophyll concentrations are generally low, indicating low algal biomass and a low risk of harmful algal blooms. [1] Calcium concentrations are consistent at 7–8 mg Ca/L, lower than the regional average but not of immediate concern. [1] Dissolved oxygen levels have been variable and the source of this variability is unknown and could be studied further. [1] Temperature measurements in Eels Lake show a range from about 21 °C at the surface to 4 °C at the lake’s bottom. Dissolved oxygen is high in surface waters and very low in the deepest waters. Total phosphorus concentrations are generally lower than those seen in other Kawartha region lakes. [1]
Lake Erie is the fourth-largest lake by surface area of the five Great Lakes in North America and the eleventh-largest globally. It is the southernmost, shallowest, and smallest by volume of the Great Lakes and also has the shortest average water residence time. At its deepest point Lake Erie is 210 feet (64 m) deep.
An algal bloom or algae bloom is a rapid increase or accumulation in the population of algae in freshwater or marine water systems. It is often recognized by the discoloration in the water from the algae's pigments. The term algae encompasses many types of aquatic photosynthetic organisms, both macroscopic multicellular organisms like seaweed and microscopic unicellular organisms like cyanobacteria. Algal bloom commonly refers to the rapid growth of microscopic unicellular algae, not macroscopic algae. An example of a macroscopic algal bloom is a kelp forest.
Eutrophication is the process by which an entire body of water, or parts of it, becomes progressively enriched with minerals and nutrients, particularly nitrogen and phosphorus. It has also been defined as "nutrient-induced increase in phytoplankton productivity". Water bodies with very low nutrient levels are termed oligotrophic and those with moderate nutrient levels are termed mesotrophic. Advanced eutrophication may also be referred to as dystrophic and hypertrophic conditions. Eutrophication can affect freshwater or salt water systems. In freshwater ecosystems it is almost always caused by excess phosphorus. In coastal waters on the other hand, the main contributing nutrient is more likely to be nitrogen, or nitrogen and phosphorus together. This depends on the location and other factors.
Limnology is the study of inland aquatic ecosystems. The study of limnology includes aspects of the biological, chemical, physical, and geological characteristics of fresh and saline, natural and man-made bodies of water. This includes the study of lakes, reservoirs, ponds, rivers, springs, streams, wetlands, and groundwater. Water systems are often categorized as either running (lotic) or standing (lentic).
Water quality refers to the chemical, physical, and biological characteristics of water based on the standards of its usage. It is most frequently used by reference to a set of standards against which compliance, generally achieved through treatment of the water, can be assessed. The most common standards used to monitor and assess water quality convey the health of ecosystems, safety of human contact, extent of water pollution and condition of drinking water. Water quality has a significant impact on water supply and oftentimes determines supply options.
Lake Scugog is an artificially flooded lake in Scugog, Regional Municipality of Durham and the unitary city of Kawartha Lakes in central Ontario, Canada. It lies between the communities of Port Perry and Lindsay. The lake has been raised and lowered several times over its history. Though not technically part of the Kawartha lakes due to its shallow depths, it is often geographically linked to them. Its sole outflow, the Scugog River, connects to Sturgeon Lake. Lake Scugog is in the Great Lakes Basin and forms part of the Trent–Severn Waterway.
The yellow perch, commonly referred to as perch, striped perch, American perch, American river perch or preacher is a freshwater perciform fish native to much of North America. The yellow perch was described in 1814 by Samuel Latham Mitchill from New York. It is closely related, and morphologically similar to the European perch ; and is sometimes considered a subspecies of its European counterpart. Other common names for yellow perch include American perch, coontail, lake perch, raccoon perch, ring-tail perch, ringed perch, and striped perch.
The brook trout is a species of freshwater fish in the char genus Salvelinus of the salmon family Salmonidae. It is native to Eastern North America in the United States and Canada, but has been introduced elsewhere in North America, as well as to Iceland, Europe, and Asia. In parts of its range, it is also known as the eastern brook trout, speckled trout, brook charr, squaretail, brookie or mud trout, among others. A potamodromous population in Lake Superior, is known as coaster trout or, simply, as coasters. Anadromous populations which are found in coastal rivers from Long Island to Hudson Bay are sometimes referred to as salters. The brook trout is the state fish of nine U.S. states: Michigan, New Hampshire, New Jersey, New York, North Carolina, Pennsylvania, Vermont, Virginia, and West Virginia, and the Provincial Fish of Nova Scotia in Canada.
A lake ecosystem or lacustrine ecosystem includes biotic (living) plants, animals and micro-organisms, as well as abiotic (non-living) physical and chemical interactions. Lake ecosystems are a prime example of lentic ecosystems, which include ponds, lakes and wetlands, and much of this article applies to lentic ecosystems in general. Lentic ecosystems can be compared with lotic ecosystems, which involve flowing terrestrial waters such as rivers and streams. Together, these two ecosystems are examples of freshwater ecosystems.
Total dissolved solids (TDS) is a measure of the dissolved combined content of all inorganic and organic substances present in a liquid in molecular, ionized, or micro-granular suspended form. TDS are often measured in parts per million (ppm). TDS in water can be measured using a digital meter.
Green Lake — also known as Big Green Lake — is a lake in Green Lake County, Wisconsin, United States. Green Lake has a maximum depth of 237 ft (72 m), making it the deepest natural inland lake in Wisconsin and the second largest by volume. The lake covers 29.72 km2 and has an average depth of 30.48 m (100.0 ft). Green Lake has 43.94 km (27.30 mi) of diverse shoreline, ranging from sandstone bluffs to marshes.
Paudash Lake is a lake in south central Ontario southwest of Bancroft along Highway 28. The lake is located just north of Silent Lake Provincial Park in Haliburton County, 27 km (17 mi) south of the panhandle of Algonquin Provincial Park. The nearest communities to Paudash Lake are the village of Cardiff, close to the lake's Inlet Bay, and the hamlet of Paudash to the northeast of Lower Paudash Lake. Actually two lakes, 'Paudash' and 'Lower Paudash', the lakes are located on the Crowe River, near its head waters, which flows into the Trent River at Crowe Bay north of Campbellford.
The term fish kill, known also as fish die-off, refers to a localized die-off of fish populations which may also be associated with more generalized mortality of aquatic life. The most common cause is reduced oxygen in the water, which in turn may be due to factors such as drought, algae bloom, overpopulation, or a sustained increase in water temperature. Infectious diseases and parasites can also lead to fish kill. Toxicity is a real but far less common cause of fish kill.
The Trophic State Index (TSI) is a classification system designed to rate water bodies based on the amount of biological productivity they sustain. Although the term "trophic index" is commonly applied to lakes, any surface water body may be indexed.
This is a glossary of terms used in fisheries, fisheries management and fisheries science.
Freshwater environmental quality parameters are those chemical, physical or biological parameters that can be used to characterise a freshwater body. Because almost all water bodies are dynamic in their composition, the relevant quality parameters are typically expressed as a range of expected concentrations.
Facultative lagoons are a type of waste stabilization pond used for biological treatment of industrial and domestic wastewater. Sewage or organic waste from food or fiber processing may be catabolized in a system of constructed ponds where adequate space is available to provide an average waste retention time exceeding a month. A series of ponds prevents mixing of untreated waste with treated wastewater and allows better control of waste residence time for uniform treatment efficiency.
Hypoxia refers to low oxygen conditions. Normally, 20.9% of the gas in the atmosphere is oxygen. The partial pressure of oxygen in the atmosphere is 20.9% of the total barometric pressure. In water, oxygen levels are much lower, approximately 7 ppm or 0.0007% in good quality water, and fluctuate locally depending on the presence of photosynthetic organisms and relative distance to the surface.
Lake Cobbosseecontee, also known as Cobbossee Lake, is a lake located in the towns of Litchfield, Manchester, Monmouth, West Gardiner, and Winthrop in the U.S. state of Maine. It is the largest lake in the Winthrop Lakes Region at 100 feet (30 m) deep, covering about 8.7 square miles (23 km2) in surface area, a length of 9 miles (14 km), and a shoreline of 62 miles (100 km). The word Cobbosseecontee translates to "plenty of sturgeon" in Wabanaki.
China Lake is a lake in Kennebec County, Maine. Located northeast of the state capital of Augusta, China Lake is situated in the towns of China and Vassalboro. China Lake has two large basins connected by a narrow neck. The elongated eastern basin with an average depth of less than 30 feet (9.1 m) is entirely within the town of China, and has an irregular shoreline heavily developed with residences and seasonal cottages. The more nearly circular western basin extending into East Vassalboro is as deep as 85 feet (26 m), and shoreline development around the western basin has been discouraged to allow use as a water supply for Waterville and Winslow. The western basin overflows into Outlet Stream in the town of Vassalboro. Outlet Stream flows 7 miles (11 km) north to discharge into the Sebasticook River in Winslow 1 mile (1.6 km) upstream of the Kennebec River.
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