Geding Lake () is a lake west of the

Aarhus Aarhus (, , ; officially spelled Århus from 1948 until 1 January 2011) is the second-largest city in Denmark and the seat of Aarhus municipality, Aarhus Municipality. It is located on the eastern shore of Jutland in the Kattegat sea and app ...

suburb of

Tilst Tilst is a suburban area of Aarhus, Denmark, situated 8 km to the northwest of Aarhus. The Tilst area is marked by big city blocks and large traditional suburban areas. In the surrounding area are several superstores, which mainly serve the inne ...

Aarhus Municipality Aarhus Municipality (), known as Århus Municipality () until 2011, is a ''Municipalities of Denmark, kommune'' in the Central Denmark Region, on the east coast of the Jutland peninsula in central Denmark. The municipality covers an area of , and ...

Denmark Denmark is a Nordic countries, Nordic country in Northern Europe. It is the metropole and most populous constituent of the Kingdom of Denmark,, . also known as the Danish Realm, a constitutionally unitary state that includes the Autonomous a ...

. The stream Egå and the Egå

river valley A valley is an elongated low area often running between hills or mountains and typically containing a river or stream running from one end to the other. Most valleys are formed by erosion of the land surface by rivers or streams over a ...

begins here. The lake is bounded by the Aarhus-Randers Rail Line to the west. Geding Lake is also known under the older name ''Gjeding Sø''. The lake is connected to a myth and

folk story Folklore is the body of expressive culture shared by a particular group of people, culture or subculture. This includes oral traditions such as tales, myths, legends, proverbs, poems, jokes, and other oral traditions. This also includes material ...

stating that Geding Lake,

Brabrand Lake Brabrand Lake () is a lake in the district of Brabrand (Gellerup), west of Aarhus city, Denmark. The Aarhus River passes through Brabrand Lake and it is possible to canoe all the way to the inner city from here. The lake is oblong-shaped. Since ...

and ''Lading Lake'' was created during a battle between two giants that lived in the hills '' Hasle Høj'' and '' Borum Eshøj''.Se §108 fra Evald Tang Kristensen
Danske Sagn
Silkeborg Bogtrykkeri (1895). Until 1997, the hills on the eastern side of the lake were used for skiing including a ski lift provided by ''Aarhus SKi Club'', but due to lack of snow for years these activities have stopped.

Environmental conditions

Geding Lake is rich in calcium. The

ecosystem An ecosystem (or ecological system) is a system formed by Organism, organisms in interaction with their Biophysical environment, environment. The Biotic material, biotic and abiotic components are linked together through nutrient cycles and en ...

of the lake has experienced problems with heightened levels of

chlorophyll Chlorophyll is any of several related green pigments found in cyanobacteria and in the chloroplasts of algae and plants. Its name is derived from the Greek words (, "pale green") and (, "leaf"). Chlorophyll allows plants to absorb energy ...

some 3 times higher than the targeted levels. The

catchment area A catchment area in human geography, is the area from which a location, such as a city, service or institution, attracts a population that uses its services and economic opportunities. Catchment areas may be defined based on from where people are ...

is fairly small at just a few square kilometers so the inflow of

phosphorus Phosphorus is a chemical element; it has Chemical symbol, symbol P and atomic number 15. All elemental forms of phosphorus are highly Reactivity (chemistry), reactive and are therefore never found in nature. They can nevertheless be prepared ar ...

and

nitrogen Nitrogen is a chemical element; it has Symbol (chemistry), symbol N and atomic number 7. Nitrogen is a Nonmetal (chemistry), nonmetal and the lightest member of pnictogen, group 15 of the periodic table, often called the Pnictogen, pnictogens. ...

is relatively small compared to other lakes in Denmark but is still deemed too high and the surrounding agricultural areas would have to decrease runoff to the lake by some two kilograms annually to reach environmental targets. Over time it may be necessary to undertake a restoration project to return the lake to its natural condition. The neighboring Mundelstrup Stationsby has experienced a major pollution event from the fertilizer factory ''Mundelstrup Gødningsfabrik'' which was active in the area from 1870 to 1904 when it burned. The factory caused major pollution with heavy metals in Geding Lake, Geding-Kasted Bog and the river Egå, in particularly with

arsenic Arsenic is a chemical element; it has Symbol (chemistry), symbol As and atomic number 33. It is a metalloid and one of the pnictogens, and therefore shares many properties with its group 15 neighbors phosphorus and antimony. Arsenic is not ...

. The factory has closed, the migration of heavy metals to waterbodies in the area has stopped and it is expected that the levels of arsenic will now decrease over time. However, the lake

sediment Sediment is a solid material that is transported to a new location where it is deposited. It occurs naturally and, through the processes of weathering and erosion, is broken down and subsequently sediment transport, transported by the action of ...

still contains high levels of the poison and Geding Lake is under continued observation for this reason.

Gallery

File:Egåen ved Geding Sø.jpg File:Geding Sø 1.jpg File:Geding Sø 2.jpg File:Geding Sø 3.jpg

References

;Publications *

External links

{{commonscat, Geding Sø, position=left Aarhus Municipality Lakes of Jutland