Lenne
History Map of the Lenne
The Lenne is a 129.1 km long, orographic left and southeast tributary of the Ruhr in North Rhine -Westphalia, Germany. With an average discharge of 30.1 m³ / s it is water- richest and thus the most important tributary of the Ruhr. For the purpose of power generation, the Lenne in many places is dammed.
Geography
Course
Lenne source
The Lenne arises within the high Sauerland in Rothaargebirge on the Kahler Asten. Your source is located about 300 meters west of the 841.9 m high mountain summit and the local observation tower Astenturm at an altitude of about 825 m above sea level. NHN.
About the Kahler Asten trail that leads through the high heather, one can easily reach the Lenne source. There, a small metal plaque was erected with this inscription: " Lenne source - 830 m above sea level. d sea - 138 km length of the river. " There called swell height and flow length are contrary to the values given by the district government of Cologne: 129.1 km length and 825 m in height.
Headwaters
From its source from the Lenne flows through the Sauerland first priority in western directions. Here it flows through the villages of West field, Inderlenne and Upper Churches. Between West and Upper Churches field opens on the right side of springing at Altastenberg Nesselbach in Inderlenne the right side Esenbeck and then in the right side Winkhausen Sorpe one. Below Gleidorf where the slide opens Erbach right side, reached the Lenne Schmallenberg. Here it flows to the left side coming from the east county. Three kilometers further flows through the Lenne spot hill, where the left side of the Latrop opens.
Middle reaches
The nearest major town along the river is the city belonging to Lenne and lying on the hall Hauser mountains Saalhausen, after which it passes through the Lennestadt districts Langenei and kick Bach. Then the Lenne flows to and through the district Altenhundem where the left side coming from the south Hundem opens. From Altenhundem the river in the middle and later also in the lower reaches of some strongly entrenched in a strongly meandering and with differences in height of over 300 m valley runs in a north-westerly direction. After passing through the districts Meggen and Maumke they reach the hamlet Grevenbrück. Here ends the right side of a Elspe Bach.
Below Grevenbrück the Lenne reached the municipality of Finnentrop, where it flows past the Northeast foothills of Ebbegebirge. Here ends the left side a the coming from the southwest and to Attendorn to Bigge Bigge jammed, which is the longest Lenne inflow 44.6 km in length. Another major tributary to Finnentroper area is the Fretterbach which opens on the right side at Lenhausen. Behind Rönkhausen, where happens the Lenne mountains on the Lenne, they reached the city of Plettenberg.
Plettenberg itself is traversed by the Else, the coming of the Lenne flows in the district Eiringhausen from the south. A little downstream passes the Lenne nor the district Ohle before leaving Plettenberg direction Werdohl. In Werdohl the river makes three meander. Furthermore, here ends the one coming from the south verses. Below the district Ütterlingsen the river reaches the city of Altena, where the stone bridge over the river. In Altena opens after the flow around the castle hill with the castle of Altena right side the Cute into the Lenne. Other belonging to Altena towns along the river are mill village, Linscheid, Knerling and Prague Paul. The then passed from the Lenne Opper Husen belongs to Nachrodt- Wiblingwerde, at whose districts Einsal, Obstfeld and Nachrodt the river then flows past.
Underflow
After passing the city limits of Iserlohn in the area of the district Letmathe the Lenne reached which also belongs to Iserlohn Lasbeck. Before reaching Letmathe right side opens out of Green Brook. The Lenne here makes an arc to the south and reaches the right side Oege local situation and the left-side Hohenlimburg the urban area of Copenhagen, where she runs her run back to the northwest. In Hohenlimburg Lenne is used as a whitewater canoe competition course, the canoe route has a length of about 300 m. A little later, which also belongs to Hagen or Hohenlimburg Elsey is achieved.
Mouth
Then the Lenne flows east past the Hagen core city to culminate in its local situation Bathey left side 96.8 m height in the coming there from the East Rhine - Ruhr Creek. Across the estuary lies the Hohensyburgstraße.
Bed slope, catchment area and runoff volume
On their 129.1 km long road the Lenne overcomes a difference in altitude of 727 m, corresponding to an average bed slope of 5.6 ‰. It drains a catchment area of 1352.233 km ². In its lower reaches the river Lenne has an average runoff volume of 30.1 m³ / s and thus results in almost a doubling of the water supply of the Ruhr.
Tributaries
The most important tributary of the river Lenne is 44.6 km long Bigge, to 27.3 % to the contribution with a 369.133 km ² large catchment area of the Lenne. Other major tributaries are Hundem, Else and verses, whose catchment area is greater than 50 km ². Below are numerous tributaries of Lenne, listed from its source to the mouth. Called are the length, the position of the mouth and, where available, the size of the catchment area. Credited only flows with a length of more than 5 km or a catchment area larger than 5 km ².
History
Records of flood events from the years 1682, 1808 and 1998 show that there were frequent floods in the lower reaches of the Lenne. The construction of the Biggetalsperre the flood hazard reduction. The places Altena, Werdohl and Plettenberg, however, are still to flooding.
Water quality and structure kindness and Protected Areas
The water quality is polluted for long stretches with critically polluted (class II -III) in some areas with strong ( grade III) specified. Only on the route between source and mouth of the Latrop the water quality is charged mainly with moderately expressed in some areas with lightly loaded.
The water structure quality of Lenne is specified in the range from the source to the confluence of Latrop predominantly with moderate to significant change ( grades 3 and 4). Subsequently, the Lenne but mainly changed as much to complete ( grades 5-7 ) is specified.
Parts of the Lenne run have been designated as a nature reserve and at the same time as a conservation area.
Fauna
In the Lenne, among other trout and grayling occur. At the Lenne been gray heron, kingfisher, dippers, gray wagtails and Mallard were detected as breeding birds. As food stays during cormorant and black stork.
Economy and power plants
The Lenne is an important function in supplying located at their industrial plants with hot water. The coal-fired power plant in Werdohl is cooled with water from the Lenne. As a renewable energy source, the Lenne is already used since the 1920s by around ten hydroelectric power plants. To Plettenberg are three works: Bockeloh, Ohle, Siesel. Also for the water supply of the Ruhr, the Lenne has an important function.
Traffic
Along the Lenne run for long stretches streets. Between West and Upper Field churches, it is the country road 640, which is then replaced by the federal highway 236. This federal highway follows the river to Iserlohn- Letmathe, where she is now run on the Autobahn 46. This highway crosses the Lenne west of Letmathe. A little downstream it is crossed by the motorway 45. To the mouth of the river Lenne is still accompanied by the county road 3. Within sight of the mouth crosses nor the Federal Highway 1, the Lenne.
Furthermore, the Lenne between Hagen and Altenhundem is accompanied by the Lenne Valley Railway. The said railroad track leaves the river valley in Altenhundem and continues to Siegen. In addition, the river is accessible by the bike path Lenneroute.
Cultural
The flow field of Lenne and the Lenne Mountains are action scenes of the novel " The Femhof " Josefa Berens - Totenohl. The group Zoff designated in its title " Sauerland " Lenne Lenne beach and sand as desirable places in the eternal resting place.