Ismaning is a municipality in Bavaria , Germany , located near Munich .
35-526: In 2016 it had 16,770 inhabitants. The town is located about seven kilometers northeast of Munich on the right high bank of the Isar River that flows into the Danube . Near Ismaning there is a large broadcasting facility called Transmitter Ismaning . The river Seebach running through the centre of the town features many different types of freshwater fish. The year 809 saw the first documentary mention. 1319 there
70-529: A slow recession . Because the peak flow also corresponds to the maximum water level reached during the event, it is of interest in flood studies. Analysis of the relationship between precipitation intensity and duration and the response of the stream discharge are aided by the concept of the unit hydrograph , which represents the response of stream discharge over time to the application of a hypothetical "unit" amount and duration of rainfall (e.g., half an inch over one hour). The amount of precipitation correlates to
105-399: Is a measure of the quantity of any fluid flow over unit time. The quantity may be either volume or mass. Thus the water discharge of a tap (faucet) can be measured with a measuring jug and a stopwatch. Here the discharge might be 1 litre per 15 seconds, equivalent to 67 ml/second or 4 litres/minute. This is an average measure. For measuring the discharge of a river we need a different method and
140-460: Is diverted several times and almost the whole river was canalized . For example, just north of Mittenwald all the river's water was diverted to the lake Walchensee in 1923 for the Walchensee hydroelectric plant. Since 1990 a small portion of the water, 4 cubic meters per second (roughly 1,100 U.S. gallons per second) is allowed to remain in the river Isar to prevent drought . The construction of
175-569: Is located some 12 km south of Lenggries . It has prevented the flooding of Munich , for example in 1979, 1999, and most recently in 2005. At Bad Tölz the Isar leaves the Bavarian Alps . Bad Tölz marks the river's transit from its upper to its middle course. The Isar river flows through a sub-alpine, glacial morainic landscape towards Wolfratshausen . Just north of the town the Loisach flows into
210-715: Is located to the south of Ismaning Palace (with castle park and former farm buildings), which was reconstructed by Leo von Klenze . [REDACTED] Media related to Ismaning at Wikimedia Commons Isar River The Isar ( pronounced [ˈiːzaʁ] ) is a river in Austria and in Bavaria , Germany . Its source is in the Karwendel mountain range of the Alps . The Isar river enters Germany near Mittenwald and flows through Bad Tölz , Munich , and Landshut before reaching
245-416: Is mentioned for the first time in 763 as Isura . Related names include: The Isar river drains a substantial part of the Bavarian Alps and parts of the Karwendel mountains. Apart from the larger tributaries Loisach and Amper many smaller rivers flow into the Isar. The drainage basin contains some 9,000 square kilometers (roughly 3,500 square miles). During the winter most of the precipitation in
280-478: Is now seat of the town hall. Originally an agricultural community, Ismaning has been known as an important media location since the mid-1990s. The Bavarian Broadcasting Corporation 's Ismaning transmitter has been located to the northeast of the village since 1932. To the south is the media park with Sport1 Medien AG (Sport1), Gong-Verlag , Mainstream Media AG (Heimatkanal) and the private radio station Antenne Bayern . Due to its location near Munich, Ismaning
315-416: Is the sum of processes within the hydrologic cycle that increase the water levels of bodies of water. Most precipitation occurs directly over bodies of water such as the oceans, or on land as surface runoff . A portion of runoff enters streams and rivers, and another portion soaks into the ground as groundwater seepage . The rest soaks into the ground as infiltration, some of which infiltrates deep into
350-404: Is typically expressed in units of cubic meters per second (m³/s) or cubic feet per second (cfs). The catchment of a river above a certain location is determined by the surface area of all land which drains toward the river from above that point. The river's discharge at that location depends on the rainfall on the catchment or drainage area and the inflow or outflow of groundwater to or from
385-668: Is well connected. Ismaning is located on the railroad line Munich East-Munich Airport , the Federal highway 99, the Federal roads B 471, B 388 and B 301 as well as on the State road 2053 (Freising-Ismaning-Unterföhring-Munich). The S8 line of the Munich S-Bahn connects Ismaning with Munich every 20 minutes. This center of Ismaning is characterized by the Catholic parish church of St. Johann Baptist. It
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#1732869475552420-641: The Danube near Deggendorf . With 295 km length, it is among the longest rivers in Bavaria. It is Germany's second most important tributary of the Danube. One theory is that the name Isar stems from *es or *is in the Indo-European languages , meaning "flowing water", and later turned into a word with a meaning narrowed to frozen water (hence English ice , German : Eis ) in Proto-Germanic . The name itself
455-527: The Rhine river in Europe is 2,200 cubic metres per second (78,000 cu ft/s) or 190,000,000 cubic metres (150,000 acre⋅ft) per day. Because of the difficulties of measurement, a stream gauge is often used at a fixed location on the stream or river. A hydrograph is a graph showing the rate of flow (discharge) versus time past a specific point in a river, channel, or conduit carrying flow. The rate of flow
490-512: The Sylvenstein Dam and numerous regulations relating to the river, pushed through in the early 19th century, have strongly enhanced its character. The construction of the Sylvenstein dam has prevented the river from overflowing its banks . Lately, there have been attempts to bring the Isar river closer back to a natural character. For example, since May 2000 the river is being re-naturalized in
525-618: The Walchensee Hydroelectric Power Station . 200 metres lower, the Walchensee Hydroelectric Power Station releases water into the Kochelsee . From here it flows into the river Loisach, Isar's second most important tributary. Not far down the Isar river is a large reservoir called Sylvensteinsee was created between 1954 and 1959 to make more energy generation possible and also to avoid flooding. It
560-471: The cross-sectional area (in m or ft ). It includes any suspended solids (e.g. sediment), dissolved chemicals like CaCO 3 (aq), or biologic material (e.g. diatoms ) in addition to the water itself. Terms may vary between disciplines. For example, a fluvial hydrologist studying natural river systems may define discharge as streamflow , whereas an engineer operating a reservoir system may equate it with outflow , contrasted with inflow . A discharge
595-527: The Alps turns into snow . The snowmelt can result in an increased water flow down the Isar rivers during the spring meltdown. It has an average discharge at the mouth of 174 m /s. The official source of the Isar is located in the Hinterau valley east of the village Scharnitz in the Karwendel mountains at a height above sea level of 1160m. The Lavatschbach is the Isar's longest headstream. A further source for
630-508: The Isar valley Gabriel von Seidl founded the Isartalverein in 1902. This first civil initiative from Munich purchased 90 ha of land, and today maintains more than 330 km of hiking trails. Discharge (hydrology) In hydrology , discharge is the volumetric flow rate (volume per time, in units of m /h or ft /h) of a stream . It equals the product of average flow velocity (with dimension of length per time, in m/h or ft/h) and
665-554: The Isar. The Isar continues on to and through the Munich gravel plain which ends within the city limits of Munich. Further downstream the river passes Freising , then the Amper flows into the Isar, its most important tributary, at Moosburg . This is where the lower course of the Isar river begins. Passing Landshut , the river makes its way through the Tertiary Hills of Lower Bavaria all
700-399: The area, stream modifications such as dams and irrigation diversions, as well as evaporation and evapotranspiration from the area's land and plant surfaces. In storm hydrology, an important consideration is the stream's discharge hydrograph, a record of how the discharge varies over time after a precipitation event. The stream rises to a peak flow after each precipitation event, then falls in
735-417: The ashes of the convicted Nazi war criminals Joachim von Ribbentrop , Hans Frank , Wilhelm Keitel , Alfred Jodl , Alfred Rosenberg , Ernst Kaltenbrunner , Wilhelm Frick , Arthur Seyss-Inquart , Fritz Sauckel , and Julius Streicher were scattered in the Isar, as were those of Hermann Göring who had committed suicide the previous night in defiance of his scheduled execution. In the 1940s and 1950s
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#1732869475552770-406: The city of Munich . The municipal wastewater treatment has also been upgraded along the river. The water pollution , however, is still relatively high. Together with other cities and communities along the river Isar, Munich has set a goal to reduce the number of germs. The sewer treatment plants on the upper river are now disinfecting the raw sewage with ultraviolet . To preserve the beauty of
805-485: The corresponding discharge from the rating curve. If a continuous level-recording device is located at a rated cross-section, the stream's discharge may be continuously determined. Larger flows (higher discharges) can transport more sediment and larger particles downstream than smaller flows due to their greater force. Larger flows can also erode stream banks and damage public infrastructure. G. H. Dury and M. J. Bradshaw are two geographers who devised models showing
840-418: The discharge of a river is based on a simplified form of the continuity equation . The equation implies that for any incompressible fluid, such as liquid water, the discharge (Q) is equal to the product of the stream's cross-sectional area (A) and its mean velocity ( u ¯ {\displaystyle {\bar {u}}} ), and is written as: where For example, the average discharge of
875-515: The federal state of Bavaria financed the construction of major hydroelectric power plants, the Sylvenstein reservoir on the Isar was constructed between 1954 and 1959. From 2000 till 2011 the Isarplan was implemented to reduce the risk of flooding. The planning and implementation was the responsibility of the Regional Office for Water Management and the city of Munich . Embankments were removed and
910-424: The level of the stream is described by a rating curve . Average velocities and the cross-sectional area of the stream are measured for a given stream level. The velocity and the area give the discharge for that level. After measurements are made for several different levels, a rating table or rating curve may be developed. Once rated, the discharge in the stream may be determined by measuring the level, and determining
945-577: The most common is the 'area-velocity' method. The area is the cross sectional area across a river and the average velocity across that section needs to be measured for a unit time, commonly a minute. Measurement of cross sectional area and average velocity, although simple in concept, are frequently non-trivial to determine. The units that are typically used to express discharge in streams or rivers include m /s (cubic meters per second), ft /s (cubic feet per second or cfs) and/or acre-feet per day. A commonly applied methodology for measuring, and estimating,
980-568: The relationship between discharge and other variables in a river. The Bradshaw model described how pebble size and other variables change from source to mouth; while Dury considered the relationships between discharge and variables such as stream slope and friction. These follow from the ideas presented by Leopold, Wolman and Miller in Fluvial Processes in Geomorphology . and on land use affecting river discharge and bedload supply. Inflow
1015-408: The river bed was widened, establishing connections to surrounding flood plains. Riverbed rock ramps were constructed so that fish can move upstream again. Since the 1920s the water of the river Isar has been used for the generation of electricity. This has had far-reaching consequences for the local fauna and flora. To provide the 28 hydroelectric power plants with enough water power the river's water
1050-478: The river's sediments during the 16th and 17th century. However, there was no big economic revenue in this due to the minor amounts of the metal found in the river. Industrialization gave rise to a sociotechnical system were the Isar River was economically exploited through multifunctional use. Over forty hydropower plants were built on the Isar to electrify Bavaria. Following their executions on October 16, 1946,
1085-402: The southern part of the river's passage through the city of Munich. The riverbed is being widened, the banks are flattened and small gravel islands are built along with near-natural rock ramps to slow the waterflow. Besides an improved protection against flooding the Isar river was, thus, brought into an almost natural state and this resulted in an improved quality of the recreational area within
Ismaning - Misplaced Pages Continue
1120-420: The volume of water (depending on the area of the catchment) that subsequently flows out of the river. Using the unit hydrograph method, actual historical rainfalls can be modeled mathematically to confirm characteristics of historical floods, and hypothetical "design storms" can be created for comparison to observed stream responses. The relationship between the discharge in the stream at a given cross-section and
1155-407: The way into the Danube river. The Isar river descends some 848m to flow into the Danube, about five kilometres away from Deggendorf . Among Central European habitats, Alpine rivers are ranked among those most substantially altered by humans over the past hundred years. The Isar Rivers are now protected from development. At the lower Isar between Moosburg and Plattling gold was washed from
1190-679: The young Isar is the Birkkarbach, which has its sources in the Birkkarspitze mountain. The Isar enters Upper Bavaria after ca. 22 km just north of Scharnitz , the Isar is dammed for the first time between Mittenwald and Krün . Some of the Isar waters are channeled via the Rißbach into the Walchensee , the Rißbach flow direction having been reversed. The Isar water flows into the giant downpipes of
1225-742: Was a sale of the villages of Ismaning, Unterföhring , Oberföhring , Englschalking and Daglfing to the Hochstift Freising by the Duke of Bavaria and later Emperor Ludwig the Bavarian in exchange for "a hundred March lotrings silver". This created the county on the Yserrain which existed until 1802. Then Ismaning became part of the Kingdom of Bavaria . Ismaning Palace was seat of the Beauharnais family until 1851 and
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