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Hohenfelder Mühlenau
The Hohenfelder Mühlenau is a stream, about long, in the district of Plön in northeast part of the North German state of Schleswig-Holstein. The Hohenfelder Mühlenau is classified as a gravel-bedded stream. It begins at the Selenter See in Holstein and, together with the Salzau / Hagener Au, is one of its natural tailwaters. The course of the stream has an incline of about 4%, a length of , a width of generally between and a depth of . It is interrupted by two barriers, the mill at Köhn, which has fallen into ruins leaving just a foundation behind, and poses an obstacle of . This hurdle will now be bypassed, in line with the EU Water Framework Directive, using a drop structure (''Sohlgleite'') which will be built next to the existing building. The Hohenfelde Mill is another obstacle of about , which is partly bypassed with a fish pass. The existing 50 hp Francis turbine is still an obstacle however. At the end of its course the Hohenfelder Mühlenau discharges into t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 member state of the European Union. Germany is situated between the Baltic and North seas to the north, and the Alps to the south; it covers an area of , with a population of almost 84 million within its 16 constituent states. Germany borders Denmark to the north, Poland and the Czech Republic to the east, Austria and Switzerland to the south, and France, Luxembourg, Belgium, and the Netherlands to the west. The nation's capital and most populous city is Berlin and its financial centre is Frankfurt; the largest urban area is the Ruhr. Various Germanic tribes have inhabited the northern parts of modern Germany since classical antiquity. A region named Germania was documented before AD 100. In 962, the Kingdom of Germany formed the bulk of the Holy Roman Empire. During the 16th ce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salzau
The Salzau is a stream, roughly long, in the district of Plön in the North German state of Schleswig-Holstein. Course Together with the Mühlenau it is one of the two tailstreams of the lake known as the Selenter See. At its outlet into the Salzau near the district Fargau of Fargau-Pratjau, the water level of the lake can be controlled. On its way to the Baltic Sea it flows into the Passader See. It leaves this as the Hagener Au, which after the last few metres discharges into the Baltic between Laboe and Stein. Origin of the name The Salzau gives its name to the village of Salzau in the municipality of Fargau-Pratjau Fargau-Pratjau is a municipality in the district of Plön, in Schleswig-Holstein, Germany. Between 1990 and 2011, the Jazz Baltica Jazz Baltica is a jazz festival which was started in 1990. Up until 2011 it was held every summer in Schloss Sal ..., whose manor house was called ''Schloss Salzau'' (Salzau Castle) locally and now houses the Salzau state ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rivers Of Schleswig-Holstein
A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of water. Small rivers can be referred to using names such as creek, brook, rivulet, and rill. There are no official definitions for the generic term river as applied to geographic features, although in some countries or communities a stream is defined by its size. Many names for small rivers are specific to geographic location; examples are "run" in some parts of the United States, "burn" in Scotland and northeast England, and "beck" in northern England. Sometimes a river is defined as being larger than a creek, but not always: the language is vague. Rivers are part of the water cycle. Water generally collects in a river from precipitation through a drainage basin from surface runoff and other sources such as groundwater recharge, springs, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Rivers Of Schleswig-Holstein
A list of rivers of Schleswig-Holstein, Germany: A * Aalbek, flowing through the Hemmelsdorfer See and into the Baltic Sea * Aalbek, tributary of the Stör *Alster *Alte Schwentine * Arlau B * Barnitz * Basshornlaufgraben * Bekau * Beste * Bille * Bilsbek * Bilsener Bek * Bißnitz * Boize * Bölkau *Bondenau * Bramau * Bredenbek, tributary of the Alster * Bredenbek, tributary of the Bünzau *Broklandsau *Brokstedter Au *Buckener Au *Bünzau C *Clever Au *Corbek *Curauer Au D *Delvenau *Dosenbek *Düpenau E * Ebach *Eider *Elbe F * Fackenburger Landgraben * Flörkendorfer Mühlenau * Fuhlenau * Füsinger Au G * Gieselau * Glinder Au * Godel * Gösebek * Gronau H * Haaler Au * Hagener Au * Hanerau * Heidgraben, tributary of the Pinnau near Moorrege * Heidgraben, tributary of the Pinnau in Uetersen * Heilsau *Hohenfelder Mühlenau * Höllenau * Holstenau * Hornbeker Mühlenbach * Hudau * Husumer Mühlenau J * Jarbek * Jevenau K * Klosterdeichwetter * Kossau * Krambek * K ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Quality
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, extend of water pollution and condition of drinking water. Water quality has a significant impact on water supply and oftentimes determines supply options. Categories The parameters for water quality are determined by the intended use. Work in the area of water quality tends to be focused on water that is treated for potability, industrial/domestic use, or restoration (of an environment/ecosystem, generally for health of human/aquatic life). Human consumption Contaminants that may be in untreated water include microorganisms such as viruses, protozoa and bacteria; inorganic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 from 10°E to 30°E longitude. A marginal sea of the Atlantic, with limited water exchange between the two water bodies, the Baltic Sea drains through the Danish Straits into the Kattegat by way of the Øresund, Great Belt and Little Belt. It includes the Gulf of Bothnia, the Bay of Bothnia, the Gulf of Finland, the Gulf of Riga and the Bay of Gdańsk. The " Baltic Proper" is bordered on its northern edge, at latitude 60°N, by Åland and the Gulf of Bothnia, on its northeastern edge by the Gulf of Finland, on its eastern edge by the Gulf of Riga, and in the west by the Swedish part of the southern Scandinavian Peninsula. The Baltic Sea is connected by artificial waterways to the White Sea via the White Sea–Baltic Canal and to the German ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Francis Turbine
The Francis turbine is a type of water turbine. It is an inward-flow reaction turbine that combines radial and axial flow concepts. Francis turbines are the most common water turbine in use today, and can achieve over 95% efficiency. The process of arriving at the modern Francis runner design took from 1848 to approximately 1920. It became known as the Francis turbine around 1920, being named after British-American engineer James B. Francis who in 1848 created a new turbine design. Francis turbines are primarily used for producing electricity. The power output of the electric generators generally ranges from just a few kilowatts up to 1000 MW, though mini-hydro installations may be lower. The best performance is seen when the head height is between . Penstock diameters are between . The speeds of different turbine units range from 70 to 1000 rpm. A wicket gate around the outside of the turbine's rotating runner controls the rate of water flow through the turbine for d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Pass
A fish ladder, also known as a fishway, fish pass, fish steps, or fish cannon is a structure on or around artificial and natural barriers (such as dams, locks and waterfalls) to facilitate diadromous fishes' natural migration as well as movements of potamodromous species. Most fishways enable fish to pass around the barriers by swimming and leaping up a series of relatively low steps (hence the term ''ladder'') into the waters on the other side. The velocity of water falling over the steps has to be great enough to attract the fish to the ladder, but it cannot be so great that it washes fish back downstream or exhausts them to the point of inability to continue their journey upriver. History Written reports of rough fishways date to 17th-century France, where bundles of branches were used to make steps in steep channels to bypass obstructions. A pool and weir salmon ladder was built around 1830 by James Smith, a Scottish engineer on the River Teith, near Deanston, Perthshire ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drop Structure
A drop structure, also known as a grade control, sill, or weir, is a manmade structure, typically small and built on minor streams, or as part of a dam's spillway, to pass water to a lower elevation while controlling the energy and velocity of the water as it passes over. Unlike most dams, drop structures are usually not built for water impoundment, diversion or raising the water level. Mostly built on watercourses with steep gradients, they serve other purposes such as water oxygenation and erosion prevention. Typical designs Drop structures can be classified into three different basic types: "vertical hard basin", "grouted sloping boulder", and "baffle chute". Each type is built depending on water flow, steepness of the site, and location. Vertical hard basin The vertical hard basin drop structure, also called a ''dissipation wall'', is the basic type of drop structure. The vertical hard basin drop consists of a vertical "cutoff wall", usually built of concrete, that is usua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Framework Directive
The Water Framework Directive 2000/60/EC is an EU directive which commits European Union member states to achieve good qualitative and quantitative status of all water bodies (including marine waters up to one nautical mile from shore) by 2015. It is a framework in the sense that it prescribes steps to reach the common goal rather than adopting the more traditional limit value approach. The Directive's aim for 'good status' for all water bodies will not be achieved, with 47% of EU water bodies covered by the Directive failing to achieve the aim. Objectives of the Directive The Directive aims for 'good status' for all ground and surface waters (rivers, lakes, transitional waters, and coastal waters) in the EU. The ecological and chemical status of surface waters are assessed according to the following criteria (see also: freshwater environmental quality parameters): * Biological quality (fish, benthic invertebrates, aquatic flora) * Hydromorphological quality such as river b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tailwater
Tailwater refers to waters located immediately downstream from a hydraulic structure, such as a dam, spillway, bridge or culvert. Generally measured and reported as the average water depth downstream of a hydraulic structure, tailwater can vary based on the outlet from the structure as well as downstream influences that may restrict or advance the usual flow of water from the structure. The creation of a tailwater will have significant impacts on both the abiotic and biotic conditions of the waterway. Biotic Impacts The environmental conditions in a tailwater influence the entire food web of the waterway. Consistent flows, higher temperatures, and clear water found in tailwaters create an ideal habitat for filamentous green algae. The near-shore zones of tailwaters that are submerged during hydropeaking but dry during consistent flows are far less productive areas of the waterway. Most algal species are not adapted to handle this exposure to air for extended periods of time re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hagener Au
The Hagener Au () is a stream, roughly long, in the district of Plön in the north German state of Schleswig-Holstein. It is an outlet of the Passader See. From the lake's southwestern bay the stream flows in a northerly direction and discharges between Laboe and Stein in the Baltic Sea. Sections of the Hagener Au are very natural and surrounded by wetlands. In addition the stream is a habitat for the rare spined loach. The stream has been straightened near its mouth and the last runs through a pipe. Together with the Passader See the Hagener Au is a protected Special Area of Conservation. See also *List of rivers of Schleswig-Holstein A list of rivers of Schleswig-Holstein, Germany: A * Aalbek, flowing through the Hemmelsdorfer See and into the Baltic Sea * Aalbek, tributary of the Stör *Alster *Alte Schwentine * Arlau B * Barnitz * Basshornlaufgraben * Bekau * Beste * ... External links Hagener Au and Passader See(pdf file, 17 KB) Plön (district) Rivers of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
