Eisenbornbach
| Eisenbornbach | ||
 Bridge of the Moritzburg-Pillnitzer Weg in Albertpark over the Eisenbornbach |
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| Data | ||
| Water code | DE : 5371956 | |
| location | Saxony ( Germany ) | |
| River system | Elbe | |
| Drain over | Elbe → North Sea | |
| source |
Dresdner Heide , 150 m east of the intersection Radeberger Landstrasse / Schneise 15 51 ° 5 ′ 4 ″ N , 13 ° 49 ′ 0 ″ E |
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| Source height | 234.2 m above sea level NHN | |
| muzzle |
Loschwitz , 100 m southwest of the Saloppe waterworks Coordinates: 51 ° 3 ′ 52 ″ N , 13 ° 47 ′ 14 ″ E 51 ° 3 ′ 52 ″ N , 13 ° 47 ′ 14 ″ E
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| length | 3.8 km | |
| Catchment area | 5.1 km² | |
| Drain |
MNQ |
10 l / s |
| Left tributaries | Bühlauer Graben, Spiegelbach, Gutebornbach | |
The Eisenbornbach is a 3.8 km long right tributary of the Elbe with the main flow direction southwest. It rises in the southwest of the Dresdner Heide , crosses it to Albertpark in the eastern Dresden Neustadt and flows into the Elbe in the west of the Loschwitz district . The stream is an open, natural body of water, only the last 150 meters from the Saloppe waterworks to the mouth are piped. Forests make up 91 percent of the area in the 5.1 km² catchment area.
course
The springs lie in a ragged swamp area of the Dresdner Heide between the steep edge facing the Elbe and the Prießnitz, which first cut into the Lusatian direction and then turns into the fault gap between the Meißner and Lusatian granite massifs . The granitic basement has numerous depressions and shallow trough-shaped depressions, occasionally ridges and humps have formed, which gives it its ragged character. The marshland, which was formed after the last Ice Age and was once almost drainless, formed a number of small rivulets that cut through the granitic threshold. They include the Eisenbornbach and its most important tributary, the Gutebornbach , as well as the Mordgrundbach and Loschwitzbach . In addition to the formation of bog areas , the rock weathered, the decomposition residues of which are water-impermeable clays but also mineral solutions that are carried away by the natural runoff. The iron hydrogen carbonate leached from the soil and rock layers near the spring leads to the surface water becoming ocher through contact with oxygen and microorganisms . The name Eisenbornbach thus describes a brook that "has its origin in a place where ferrous water drains from the ground".
Of the six sources of the Eisenbornbach, three flow directly into it: Eisenbornbach-Quellmoor, Eisenbornbach-Seitenquelle and the only periodically water-bearing Eisenbornbach-Quelle. The other three sources are the periodically water-bearing Spiegelgraben source moor, northeast of the crossing Doppel-E / Anker, as well as the Gutebornbach source moor about 1500 meters northeast of the Mordgrund bridge and the Gutebornbach side source. About one kilometer after the source moor, the Eisenbornbach takes on the Bühlauer Graben , a few hundred meters later the Spiegelbach. After three quarters of a kilometer, the Eisenbornbach flows through the four Upper Fischmannsteiche.
The Eisenbornbach and Gutebornbach streams flow in hollow or bottom valleys in their low-gradient upper reaches, and valuable structures made of dead wood and debris can be found in sections . The width, depth and flow behavior vary, especially in the upper reaches, the entire bed of the Eisenbornbach only carries water during periods of heavy rainfall. The stream beds, which are rich in fine material and predominantly made of sand, are only transformed into notch valleys as a result of the steeper slope towards the Elbe valley . When you enter the flat Heidesand terrace on the edge of the Heider, the stream, which has now been united, forms troughed valleys again.
After the stream crosses under the Bautzner Strasse ( Bundesstrasse 6 ), which runs along the edge of the Heider , it enters the Brockhausgarten west of Brockhausstrasse. After about 350 meters, he leaves it in the immediate vicinity of the Saloppe waterworks through an opening in the wall. The outflow there is piped underground to the Elbe.
Protected areas
On the upper reaches of the Eisenbornbach lies the 1.7 hectare natural monument No. 1 old beech wood on the Eisenbornbach , which, in addition to a natural forest community with a high proportion of old beech, also has the last occurrence of the stock dove (Columba oenas) in the Dresden Heath.
Furthermore, the catchment area is mainly located in the landscape protection areas of Dresdner Heide and Dresdner Elbwiesen and Elbarme . The mouth is located in the extensive FFH area Elbe Valley between Schöna and Mühlberg .
Several structures along the course of the stream, including the arched bridges of Moritzburg-Pillnitzer Weg over Eisenbornbach and Gutebornbach and the Saloppe waterworks, are designated as cultural monuments.
Web links
supporting documents
- ↑ a b c d e f g h i j k State capital Dresden, The Lord Mayor, Environment Office (ed.): Water profile Eisenbornbach . ( online [PDF; 2.8 MB ] as of March 1, 2012).
- ↑ Robert Nessig : studies on the Dresden heath sand . In: Reports of meetings and treatises of the Isis Natural Science Society in Dresden . Dresden 1897, p. 27-32 .
- ↑ Protected areas according to the Nature Conservation Act. (PDF; 331 kB) In: Umweltatlas 06/2014. Environmental Office of the City of Dresden, p. 4 , accessed on August 11, 2016 .