Aschaff

	Aschaff
	The Aschaff near Aschaffenburg - Damm
	Data
Water code	DE : 24754
location	Spessart Bavaria Lower Franconia Aschaffenburg district ,; City of Aschaffenburg ; ;
River system	Rhine
Drain over	Main → Rhine → North Sea
origin	Confluence of Autenbach and Kleinaschaff at Waldaschaff ; 49 ° 58 ′ 21 ″ N , 9 ° 18 ′ 2 ″ E
Source height	189 m above sea level NHN (at the confluence)
muzzle	at Mainaschaff in the Main Coordinates: 49 ° 58 '28 " N , 9 ° 6' 18" E 49 ° 58 '28 " N , 9 ° 6' 18" E;
Mouth height	108.5 m above sea level NHN
Height difference	80.5 m
Bottom slope	4.7 ‰
length	17 km from the confluence ; 22.4 km with Kleinaschaff
Catchment area	166.57 km²
Left tributaries	Bessenbach , Nonnenbach , Klingengraben , Röderbach
Right tributaries	Heerbach , Gogelgraben , Laufach , Güntersbach , Hösbach , Goldbach , Glattbach , Lohmgraben
	The Aschaff next to the enclosure of the A 3
	The Aschaff in Aschaffenburg

The Aschaff is an almost 17 km long right and northern tributary of the Main near Mainaschaff in the Lower Franconian district of Aschaffenburg, together with the source stream Kleinaschaff . It flows in western directions through the Bavarian Spessart .

Surname

The original name ascafa comes from the Old High German word asc for ash and the Indo-European word Ap , which means water. The explanation is “ a stream of ash trees ”. The river gave the communities Waldaschaff and Mainaschaff and the city of Aschaffenburg , between whose districts Damm and Strietwald it flows, their names. The nearby river Elsava (from Elsapha Erlenwasser ) has the same name origin .

geography

course

Spring streams

The Aschaff arises from the confluence of the right Autenbach and left Kleinaschaff. The two source streams unite in the municipality of Waldaschaff at an altitude of 189 m above sea level. NHN .

The two source streams of the Aschaff
The Kleinaschaff
The Autenbach
Confluence of the Kleinaschaff (left) and Autenbach (right) to the Aschaff (to the rear)

Kleinaschaff

The Kleinaschaff is the left source brook of the Aschaff and has a catchment area of 7.9 km². It rises from the Aschaff spring in the Waldaschaff forest , near Weibersbrunn . At 4.4 km, the Kleinaschaff is slightly longer than the Autenbach and is officially regarded as the main strand of the Aschaff. It has the same water body number as the Aschaff. Your valley is spanned by the striking Kauppenbrücke .

Autenbach

The Autenbach is the 3.7 km long right source brook of the Aschaff and has a catchment area of 12.7 km². Although it has the larger catchment area, it is regarded as a branch of the Aschaff.

Further course

The Aschaff about 100 m before it flows into the Main

After the confluence of the source streams at the village square in Waldaschaff, which was previously piped and has now been exposed again, Aschaff, also known there as Mühlbach, runs through the village and crosses to the north-west of the Bessenbach district . To the west of Weiler Castle , it crosses the A3 . There the Bessenbach, which is about the same size, flows to it from the south .

The A3 now accompanies the river to Hösbach . In the area of this municipality near Hösbach-Bahnhof , the Aschaff crosses the route of the Main-Spessart-Bahn and again the motorway and only the Nonnenbach flows from the left and about 130 m further into the Laufach flowing westwards from the right. On average, it is somewhat richer in water and is the largest tributary of the Aschaff. Then the Aschaff swings on a west-south-west course.

In the further course, Aschaff will continue to be accompanied in parallel by the A3 leading from Würzburg to Frankfurt am Main . In order to comply with the noise limit values after the expansion to six lanes, the traffic route was enclosed there . For this purpose, the river bed was relocated several times and partly straightened. From there, the Aschafal is built up on both sides up to the mountain slopes. The Aschaff then reaches the market town of Goldbach , where it crosses under the motorway again.

The Aschaff then flows into the urban area of Aschaffenburg and separates the districts of Damm on the left and Strietwald on the right. Further downstream, it forms the border between Aschaffenburg and Mainaschaff . After crossing the Main-Spessart railway line and federal highway 8 , the Aschaff finally empties near the sewage treatment plant of the city of Aschaffenburg, but already in the Mainaschaff area, from the right and in a south-westerly direction at 108.5 m above sea level. NHN in the Main .

Aschaff estuary

Before 1920, the old Aschaff ran right through the area of today's sewage treatment plant in the city of Aschaffenburg, where it flowed directly into the Main. It formed the natural border between Mainaschaff and the city of Aschaffenburg.

During the construction of the former Stockstadt / Mainaschaff barrage at the beginning of the 1920s, the mouth of the Aschaff was moved approx. 2 km into the underwater area of the barrage. For this purpose, a new channel was built parallel to the Main, the course of which can still be seen in part between the Main and the cycle path.

At the beginning of the 1970s, the Aschaff estuary was relocated again with the construction of today's Kleinostheim barrage. The Aschaff was particularly heavily polluted by wastewater from the paper industry and carried a lot of suspended matter with it. The nearby, former power station feared that the cooling water extraction would be impaired. Therefore, the Aschaff was led into an artificial, Main-parallel channel below the tapping point via a concrete pipe into the Main. During floods, the water masses were channeled directly into the Main via a dividing structure with a stretcher weir.

In 2001, a new, winding bed was created for the Aschaff over a length of around 600 m. The Aschaff now flows directly into the Main again without a detour via a technical structure that hinders the natural migration of the flowing water animals. At the same time, the previous artificial channel along the cycle path was filled. The trees have been preserved.

Catchment area

The 166.57 km² catchment area of the Aschaff lies in the Spessart and is drained through it via the Main and the Rhine to the North Sea.

It borders

in the northeast to the catchment area of the Lohrbach , which drains over the Aubach and Lohr into the Main
in the southeast of the Hafenlohr , which flows into the Main
in the south to that of the Elsava , which also flows into the Main
in the southwest to the catchment areas of the two Main tributaries Sulzbach and Hensbach
in the northwest to that of the Steinbach , also a tributary of the Main
and in the north to that of the Main tributary Kahl .

The highest elevation in the Steigkoppe with 502 m above sea level. NHN in the northeast of the catchment area.

Tributaries

The tributaries of the Aschaff include (viewed downstream):

Surname	GKZ	Length [km]	Mouth height (m above sea level )	Direction of flow	Mouth	comment
Autenbach	24754-12	3.7	189	right	Waldaschaff	right source stream
Kleinaschaff	24754	4.4	189	Left	Waldaschaff	left source stream (sometimes viewed as part of the Aschaff)
Heerbach		1.2	168	right	Waldaschaff
Bessenbach	24754-2	8.1	157	Left	Bessenbach - Keilberg
Gogelgraben		1.5	155	right	Bessenbach-Unterbessenbach
Nonnenbach		4.3	145	Left	Hösbach
Laufach	24754-4	11.4	144	right	Hösbach
Güntersbach		3.0	142	right	Hösbach
Hösbach	24754-6	5.1	135	right	Hösbach
Blade moat		1.4	134	Left	Hösbach
Roederbach		4.0	130	Left	Goldbach
Goldbach		4.4	129	right	Goldbach
Glattbach		4.0	126	right	Aschaffenburg - dam
Lohmgraben (Lohmühlgraben)		3.0	117	right	Aschaffenburg dam

Notes on the table

^ Topographic map 1: 10000 Bavaria North
↑ Water code number , in Germany the official river code number with a separator inserted after the prefix for better readability, which stands for the common Aschaff

Aschaff river system

Data

The difference in altitude from the source (the Kleinaschaff) to the confluence with the Main near Mainaschaff is 205 meters. The catchment area covers 167.88 km².

Flood

The flooding of the Aschaff in May 2013

fauna

In the Aschaff there are brown trout , brown lamprey , brook loach , bream , minnow , gudgeon , hazel , pike , arbor , Mühlkoppe , nose , roach and rag .

Mills

From the confluence to the mouth

Sparrow mill
Aschaffsteghammer
Wood mill
two Goldbacher mills
Aumühle
Hazel mill
Pfaffenmühle
Granulator
Mill (in dam)
Mountain mill
Schwalbenmühle (oil mill)
Upper paper mill
Lower paper mill

Web links

Commons : Aschaff - collection of images, videos and audio files

Course and catchment area of the Aschaff on the UmweltAtlas - basic data for flowing waters Bavarian State Office for the Environment ( information )
Gauge near Goldbach, HND Bavaria
The Aschaff , water portraits at Aschaffenburg Water Management Office 2016

Individual evidence

↑ ^a ^b Storage target in the upper water of the Kleinostheim barrage on the Bavaria Atlas of the Bavarian State Government ( information ).

↑ ^a ^b Map service of the Bavarian State Office for the Environment ( Memento from April 10, 2005 in the Internet Archive )

↑ ^a ^b Directory of stream and river areas in Bavaria - Main river area, page 155 of the Bavarian State Office for the Environment, as of 2016 (PDF; 3.3 MB)

^ Geological yearbook Rhine area, Part II, Main (accessed on September 6, 2013)

↑ Goldbach gauge value increased by the drainage of the remaining catchment area (25.09 km²), determined from the data from the Rück , Hainstadt , Goldbach , Harreshausen , Alzenau , Hanau , Kleinheubach and Frankfurt a. M. Osthafen
^ Wolf-Armin von Reitzenstein : Lexicon of Franconian place names. Origin and meaning . Upper Franconia, Middle Franconia, Lower Franconia. CH Beck, Munich 2009, ISBN 978-3-406-59131-0 , p. 26–27 ( limited preview in Google Book search).
^ Waldaschaff: Village square is taking shape. August 2, 2018, accessed May 19, 2020 .
^ Aschaffenburg Water Management Office ( Memento from May 21, 2008 in the Internet Archive )
↑ Flood Action Plan Main. Archived from the original on September 6, 2009 ; accessed on May 11, 2014 .
↑ Fishing Association of Lower Franconia: Our waters ( Memento from September 25, 2014 in the Internet Archive )
^ Topographic atlas of the Kingdom of Bavaria on this side of the Rhine
^ Plan of Aschaffenburg with the surrounding area

[9] Topographic map 1: 10000 Bavaria North

[10] Water code number , in Germany the official river code number with a separator inserted after the prefix for better readability, which stands for the common Aschaff

[BV-MH-1] Storage target in the upper water of the Kleinostheim barrage on the Bavaria Atlas of the Bavarian State Government ( information ).

[LfW-2] Map service of the Bavarian State Office for the Environment ( Memento from April 10, 2005 in the Internet Archive )

[DE-BY_GV24155-3] Directory of stream and river areas in Bavaria - Main river area, page 155 of the Bavarian State Office for the Environment, as of 2016 (PDF; 3.3 MB)

[4] Geological yearbook Rhine area, Part II, Main (accessed on September 6, 2013)