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Cooper Creek Reservoir
Cooper Creek Reservoir is a body of water behind an earthen dam across Cooper Creek in the Umpqua River basin of the U.S. state of Oregon. The reservoir is in Douglas County, about east of Sutherlin and about north of Roseburg. The impoundment provides part of Sutherlin's drinking water. The reservoir supports populations of largemouth bass, panfish, and stocked rainbow trout. The panfish and bass grow to large sizes, but mercury pollution from old mine tailings upstream makes eating them risky. On February 12, 2001 Oregon Health Department issued a mercury-related health advisory for fish caught in the reservoir. However, municipal water from the reservoir was deemed safe to drink, and the mercury posed no threat to recreational activities in the lake. Mercury levels in the fish were not expected to diminish in the foreseeable future. Recreation Cooper Creek Reservoir Park, managed by Douglas County, has two boat launches, a swimming area, and a dock. It offers opportuniti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Douglas County, Oregon
Douglas County is one of the 36 counties in the U.S. state of Oregon. As of the 2020 census, the population was 111,201. The county seat is Roseburg. The county is named after Stephen A. Douglas, an American politician who supported Oregon statehood. Douglas County comprises the Roseburg, OR Micropolitan Statistical Area. History The area originally was inhabited by the Umpqua Indians, a grouping of natives who spoke a variety of Penutian and Athabaskan languages. Following the Rogue River Indian War in 1856, most of the remaining natives were moved by the government to the Grand Ronde Indian Reservation. However, seven families of Umpqua hid in the hills, eluding capture for many decades. They are now federally recognized as the Cow Creek Band of Umpqua Tribe of Indians. The tribe manages a small reservation in Canyonville, Oregon, and has a Casino/Hotel named Seven Feathers to represent the seven families who refused forced removal to the Grand Ronde Reservation. Dou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Methylmercury
Methylmercury (sometimes methyl mercury) is an organometallic cation with the formula . It is the simplest organomercury compound. Methylmercury is extremely toxic, and its derivatives are the major source of organic mercury for humans. It is a bioaccumulative environmental toxicant. Structure and chemistry "Methylmercury" is a shorthand for the hypothetical "methylmercury cation", sometimes written "''methylmercury(1+) cation''" or "''methylmercury(II) cation''". This functional group is composed of a methyl group bonded to an atom of mercury. Its chemical formula is (sometimes written as ).The Methylmercury compound has an overall charge of +1, with Hg in the +2 oxidation state.Methylmercury exists as a substituent in many complexes of the type (L = Lewis base) and MeHgX (X = anion). As a positively charged ion it readily combines with anions such as chloride (), hydroxide () and nitrate (). It has particular affinity for sulfur-containing anions, particularly thiols (). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Lakes In Oregon
This is a list of the lakes and reservoirs of Oregon. Gallery File:AbertRim-right.jpg, Lake Abert and the Abert Rim File:Applegate Lake Oregon.jpg, Applegate Lake in Jackson County File:Lake Billy Chinook, Deschutes National Forest, Oregon (photo by Bob Nichol).jpg, Lake Billy Chinook File:Bull Run Lake.jpg, Bull Run Lake and Mount Hood File:Cleawox Lake.jpg, Cleawox Lake on the coast File:Cougar Reservoir 2011.jpg, Cougar Reservoir on the South Fork McKenzie River File:Crater lake oregon.jpg, Crater Lake File:Cullaby_Lake,_Oregon.jpg, Cullaby Lake in Clatsop County File:Cultus Lake.JPG, Cultus Lake in Deschutes County File:Diamond Lake & Mt Bailey.....JPG, Diamond Lake and Mount Bailey File:Elk Lake and South Sister, Oregon.jpg, Elk Lake and South Sister File:Fern Ridge Reservoir, Oregon.JPG, Fern Ridge Reservoir on the Long Tom River in Lane County File:Fish Lake Oregon.jpg, Fish Lake with Mount McLoughlin in the background File:Goose Lake 002.jpg, Goose Lake on the O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Personal Water Craft
A personal watercraft (PWC), also called water scooter or jet ski, is a recreational watercraft that a rider sits or stands on, not within, as in a boat. PWCs have two style categories, first and most popular being a runabout or "sit down" where the rider uses the watercraft mainly sitting down, and the watercraft typically holds two or more people. The second style is a "stand-up", where the rider uses the watercraft standing up. The stand-up styles are built for one rider and are used more for doing tricks, racing, and use in competitions. Both styles have an inboard engine driving a pump-jet that has a screw-shaped impeller to create thrust for propulsion and steering. Most are designed for two or three people, though four-passenger models exist. Many of today's models are built for more extended use and have the fuel capacity to make long cruises, in some cases even beyond 100 miles (161 km). Personal watercraft are often referred by the trademarked brand names of p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waterskiing
Water skiing (also waterskiing or water-skiing) is a Surface water sports, surface water sport in which an individual is pulled behind a boat or a Cable skiing, cable ski installation over a body of water, skimming the surface on two skis or one ski. The sport requires sufficient area on a stretch of water, one or two skis, a tow boat with tow rope, two or three people (depending on local boating laws), and a personal flotation device. In addition, the skier must have adequate upper and lower body strength, muscular endurance, and good balance. There are water ski participants around the world, in Asia and Australia (continent), Australia, Europe, Africa, and Americas, the Americas. In the United States alone, there are approximately 11 million water skiers and over 900 sanctioned water ski competitions every year. Australia boasts 1.3 million water skiers. There are many options for recreational or competitive water skiers. These include speed skiing, trick skiing, show skii ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oregon Department Of Environmental Quality
The Oregon Department of Environmental Quality (DEQ) is the chief regulatory agency of the government of the U.S. state of Oregon responsible for protecting and enhancing the state's natural resources and managing sanitary and toxic waste disposal. The agency employs approximately 700 scientists, engineers, technicians, administrators, and environmental specialists. It has headquarters in Portland, regional administrative offices in Bend, Eugene, and Portland; and field offices in Coos Bay, Medford, Pendleton, Salem, and The Dalles. The Laboratory and Environmental Assessment Division operates an environmental laboratory in Hillsboro. The agency's director has the authority to impose fines for violations of the state's anti-pollution laws. In addition to its state mandate, the United States Environmental Protection Agency (EPA) has delegated authority to DEQ to administer federal environmental programs including the federal Clean Air Act, Clean Water Act, and Resource Conse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oregon Health Authority
The Oregon Health Authority (OHA) is a government agency in the U.S. state of Oregon. It was established by the passage of Oregon House Bill 2009 by the 75th Oregon Legislative Assembly, and split off from Oregon Department of Human Services, OHA oversees most of Oregon's health-related programs including behavioral health (addictions and mental health), public health, Oregon State Hospital for individuals requiring secure residential psychiatric care, and the state's Medicaid program called the Oregon Health Plan. Its policy work is overseen by the nine member Oregon Health Policy Board. The Health Authority director is Patrick Allen. Its first director was Bruce Goldberg, M.D., former director of the Oregon Department of Human Services. The mission of the Oregon Health Authority is helping people and communities achieve optimum physical, mental and social well-being through partnerships, prevention and access to quality, affordable health care. OHA is responsible for the sta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tailings
In mining, tailings are the materials left over after the process of separating the valuable fraction from the uneconomic fraction (gangue) of an ore. Tailings are different to overburden, which is the waste rock or other material that overlies an ore or mineral body and is displaced during mining without being processed. The extraction of minerals from ore can be done two ways: placer mining, which uses water and gravity to concentrate the valuable minerals, or hard rock mining, which pulverizes the rock containing the ore and then relies on chemical reactions to concentrate the sought-after material. In the latter, the extraction of minerals from ore requires comminution, i.e., grinding the ore into fine particles to facilitate extraction of the target element(s). Because of this comminution, tailings consist of a slurry of fine particles, ranging from the size of a grain of sand to a few micrometres. Mine tailings are usually produced from the mill in slurry form, which i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rainbow Trout
The rainbow trout (''Oncorhynchus mykiss'') is a species of trout native to cold-water tributaries of the Pacific Ocean in Asia and North America. The steelhead (sometimes called "steelhead trout") is an anadromous (sea-run) form of the coastal rainbow trout or Columbia River redband trout that usually returns to freshwater to spawn after living two to three years in the ocean. Freshwater forms that have been introduced into the Great Lakes and migrate into tributaries to spawn are also called steelhead. Adult freshwater stream rainbow trout average between , while lake-dwelling and anadromous forms may reach . Coloration varies widely based on subspecies, forms, and habitat. Adult fish are distinguished by a broad reddish stripe along the lateral line, from gills to the tail, which is most vivid in breeding males. Wild-caught and hatchery-reared forms of the species have been transplanted and introduced for food or sport in at least 45 countries and every continent except ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trophic State Index
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. The TSI of a water body is rated on a scale from zero to one hundred. Under the TSI scale, water bodies may be defined as: * oligotrophic (TSI 0–40, having the least amount of biological productivity, "good" water quality); * mesotrophic (TSI 40–60, having a moderate level of biological productivity, "fair" water quality); or * eutrophic to hypereutrophic (TSI 60–100, having the highest amount of biological productivity, "poor" water quality). The quantities of nitrogen, phosphorus, and other biologically useful nutrients are the primary determinants of a water body's TSI. Nutrients such as nitrogen and phosphorus tend to be limiting resources in standing water bodies, so increased concentrations tend to result in increased p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Panfish
The word panfish, also spelled pan-fish or pan fish, is an American English term describing any edible freshwater fish that usually do not outgrow the size of an average frying pan. It is also commonly used by recreational anglers to refer to any small catch that can fit wholly into a pan but still large enough to be legal. The fish species which match this definition and usage vary according to geography. According to the Oxford English Dictionary, the term was first recorded in 1796 in ''American Cookery'', the first known cookbook written by an American author. __TOC__ Usage The term ''panfish'' or ''pan-fish'' has been used to refer to a wide range of edible freshwater and saltwater fish species that are small enough to cook whole in one frying pan. One early-20th-century source identifies all the following as panfish: yellow perch, candlefish, balaos, sand launces, rock bass, bullheads, minnows, Rocky Mountain whitefish, sand rollers, crappie, yellow bass, white bass ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Largemouth Bass
The largemouth bass (''Micropterus salmoides'') is a carnivorous freshwater gamefish in the Centrarchidae ( sunfish) family, a species of black bass native to the eastern and central United States, southeastern Canada and northern Mexico, but widely introduced elsewhere. It is known by a variety of regional names, such as the widemouth bass, bigmouth bass, black bass, bucketmouth, largies, Potter's fish, Florida bass, Florida largemouth, green bass, bucketmouth bass, Green trout, gilsdorf bass, Oswego bass, LMB, and southern largemouth and northern largemouth. The largemouth bass is the state fish of Georgia and Mississippi, and the state freshwater fish of Florida and Alabama. Taxonomy The largemouth bass was first formally described as ''Labrus salmoides'' in 1802 by the French naturalist Bernard Germain de Lacépède with the type locality given as the Carolinas. Lacépède based his description on an illustration of a specimen collected by Louis Bosc near Charleston, S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
