Ergolz

	Ergolz
	Course of the Ergolz ( interactive map )
	Data
Water code	CH : 2
location	law Switzerland Canton of Basel-Country; Kanton Aargau ;
River system	Rhine
Drain over	Rhine → North Sea
source	Schafmatt, Geissflue ; 47 ° 25 ′ 26 ″ N , 7 ° 57 ′ 34 ″ E
Source height	830 m above sea level M.
muzzle	between Augst and Kaiseraugst in the Rhine Coordinates: 47 ° 32 ′ 17 " N , 7 ° 42 ′ 50" E ; CH1903: 620 724 / 265 296 47 ° 32 '17 " N , 7 ° 42' 50" O;
Mouth height	260 m above sea level M.
Height difference	570 m
Bottom slope	19 ‰
length	30 km
Catchment area	301 km²
Small towns	Sissach , Liestal
Communities	Gelterkinden
	The Ergolz near Sissach
	The Ergolz in Oltingen

source

muzzle

Source and mouth of the Ergolz

The Ergolz is the 30 kilometer long main river in the Basel area . Your entire course is in the Swiss canton of Basel-Landschaft . It rises in the Folded Jura on the Geissflue in the upper Basel area and flows into the Rhine at Augst .

geography

course

The Ergolz drains the entire eastern part of the canton of Baselland; the Birstal to the west lies on the Birs , which flows into the Rhine about nine kilometers below the Ergolz.

The catchment area of the Ergolz corresponds to the districts of Liestal , Sissach and Waldenburg . The river has its source at around 830 m above sea level. M. on the canton border of Baselland ( Oltingen ) and Solothurn ( Kienberg ) and less than a kilometer away from the nearest point in the canton of Aargau . The source streams lie in the mountain pastures of the hamlet of Bärenacker and gather near Wägenstett, from where the mountain stream flows through a narrow, wooded valley, partly overturned under the connecting road, towards the northwest to Oltingen. In this village, the young Ergolz is laid in sections of several houses in an underground channel.

The stream crosses the landscape shaped by the Table Jura in an increasingly deeper valley and overcomes a low level of terrain in a waterfall in the area of the municipality of Anwil , as is the case with several small side streams. Below the village, in the narrow valley, the Upper and Lower Talweiher are created. Out of the valley, the Ergolz reaches the Mühlematt von Rothenfluh and shortly afterwards the Dübach flows into this village from the right. To the northwest of Rothenfluh, the valley widens to form a basin one kilometer wide. Past the hamlet of Säge, where the Lähnenbächli flows from the right, the Ergolz reaches the Sagimatt and the village of Ormalingen , which it flows around on the southern side of the valley under the church hill and at the foot of the Flue. In wide loops it passes the commercial area between Ormalingen and Gelterkinden and flows, overturned under the cantonal road, under the large railway viaduct of the Hauenstein line into this village.

In Gelterkinden, a regional center of the Upper Basel area, the Eibach , which comes from Zeglingen and has a stream almost as long as the upper course of the Ergolz, flows from the left, and the Rickenbächli from the left . On the south side around the village of Böckten and again the cantonal road and the railway embankment and shortly afterwards crossing the Sissacher bypass road, the Ergolz flows in a westerly direction and reaches the large settlement of Sissach , the second regional center. On the outskirts of the village it takes on the Homburgerbach from the left , which rises on the north ramp of the Lower Hauenstein Pass, and in the center of the village the Diegterbach , also coming from the south , which arises from four larger source streams below Eptingen . The source of the Leisibach, which is furthest to the south, lies a little below the Belchenfluh. Eleven bridges and footbridges cross the Ergolz near Gelterkinden.

The body of water, which has meanwhile become a small river, flows on the edge of the municipality of Sissach under the A 2 motorway viaduct and from then on is accompanied for several kilometers by the A 22 valley motorway . The Ergolz flows through the closely connected settlement areas of Itingen and Lausen to Liestal, the capital of the canton. The Talbächli flow into Itingen and three smaller tributaries flow into Lausen. In Liestal, the Frenke , the southernmost source stream of which rises on the Helfenberg in the southernmost part of the entire catchment area, the Ergolz, the Orisbach and the Röserenbach reach the main river. In the valley floor near Liestal, commercial canals branch off the river from time immemorial, which 14 bridges and footbridges cross here.

The lower course of the Ergolz lies on an almost straight line in an almost northerly direction between Frenkendorf and Pratteln on the left and Füllinsdorf on the right. North of Frenkendorf, the Hülftenbach coming from the Adlerhof and on the right-hand side of which the Hülftenschanz is located, flows into the river. The section shortly before the confluence with the Rhine lies in Augst and below the former settlement area of Augusta Raurica . Shortly before the Ergolz reaches the Rhine, the Violenbach flows into it from the right . From this point the Ergolz forms the canton border of the Basel area and the canton of Aargau between the villages of Augst and Kaiseraugst for a length of about four hundred meters .

The mouth section of the Ergolz on the left bank of the High Rhine is located in the reservoir area of the Augst-Wyhlen power plant to the west of it . To the left of the confluence, in front of the upper entrance to the ship lock of the power plant, is the Augst landing stage. At the confluence with the Rhine, the Kraftwerkstrasse crosses the Ergolz.

Catchment area

The catchment area of the Ergolz is 301.25 km² and consists of 43.6% wooded area , 45.1% agricultural area , 11.1% settlement area , 0.2% water area and 0.1% from unproductive areas.

The mean height of the catchment area is 562 m above sea level. M. , the minimum height is 260 m above sea level. M. and the maximum height at 1163 m above sea level. M.

Tributaries

The larger tributaries Eibach , Homburgerbach , Diegterbach , Frenke , Orisbach , Röserenbach and Violenbach flow into the Ergolz .

Inflows of the Ergolz from the source to the mouth with name, orographic direction, length in km, catchment area in km² and mean discharge (MQ) in m³ / s

Oltschürbächli ( left ), 0.4 miles
Mühlibächli ( left ), 0.2 km
Weiermattbächli ( left ), 0.2 km
Bruggacherbächli ( right ), 0.8 km
Bilisingenbächli ( right ), 0.4 miles
Hinteres Almetbächli ( right ), 0.1 km
Vorderes Almetbächli ( right ), 0.1 km
Dalcherbächli (left), 0.1 km
Löracherbächli ( right ), 0.1 km
Lochmattbächli ( left ), 0.3 km
Wolflochbächli ( left ), 0.5 km
Hintermattbächli ( right ), 0.9 km, 1.41 km²
Oltwegbächli ( right ), 0.7 km
Chörberbächli ( left ), 0.5 km
Dübach ( right ), 3.4 km, 5.24 km²
Isletenbächli (left), 0.8 km
Lähnenbächli ( right ), 2.1 km, 2.6 km²
Weiherbächli ( left ), 2.1 km, 1.75 km²
Hemmikerbach ( right ), 2.8 km (with Seebächli 3.5 km), 4.69 km²
Chilchmattbächli ( left ), 0.2 miles
Händschenmattbächli ( right ), 1.7 km, 1.56 km²
Hintergrabenbächli ( right ), 0.7 km,
Tschuppisbächli ( right ), 0.3 km
Marenbächli ( right ), 0.5 km
Eibach ( left ), 12.5 km, 28.8 km², 0.44 m³ / s
Rickenbächli ( Cholmattbächli ) ( right ), 2.9 km (with Cholmattbächli 3.4 km), 4.97 km²
Rorbächli ( left ), 0.8 km
Ischlagbächli ( left ), 0.2 km
Lambergbächli ( left ), 0.1 km
Eibächli ( right ), 0.9 km
Hinterdorfbächli ( right ), 0.9 km
Rebacherbächli ( right ), 0.2 km

Homburgerbach

Frenke

Homburgerbach ( left ), 12.0 km, 30.4 km², 0.47 m³ / s
Isletenbächli ( right ), 1.6 km
Diegterbach ( left ), 13.0 km, 30.8 km², 0.46 m³ / s
Böschmattbächli ( right ), 0.2 km
Brunnmattbächli ( Grimstenbächli ) ( right ), 1.2 km (with Grimstenbächli 2.0 km), 2.43 km²
Weiermattbächli ( right ), 0.2 km
Lichsbächli ( left ), 0.5 km
Talbächli ( Wolfgrabenbächli ) ( left ), 2.4 km (with Wolfgrabenbächli 2.8 km), 1.81 km²
Atlistenbächli ( right ), 1.3 km
Edletenbächli ( right ), 1.2 km
Buechholdenbächli ( left ), 1.6 miles
Furlenbächli ( left ), 2.2 km
Chirchbergbächli ( right ), 0.2 km
Windentalbächli ( right ), 1.2 km
Frenke ( left ), 18.7 km, 88.4 km², 1.31 m³ / s
Vogelsangbächli ( right ), 0.4 km
Orisbach ( left ), 9.0 km, 20.8 km², 0.32 m³ / s

Violenbach

Weidelibächli ( right ), 0.5 km
Röserenbach ( left ), 5.2 km, 7.47 km², 0.11 m³ / s
Elbisbächli ( right ), 1.6 km
Röschgrabenbächli ( right ), 1.1 km
Hölftenbächli ( Weiherbächli ) ( left ), 1.9 km, 2.6 km²
Ruschenbächli ( right ), 2.3 km, 1.57 km²
Violenbach ( right ), 8.0 km, 16.4 km², 0.26 m³ / s

Measurement data

The water level and the flow rate of the Ergolz have been measured in Liestal since 1934 . In these more than 70 years, an average of 3.73 m³ / s flowed towards the Rhine. In 2006 the river carried an average of 5.63 m³ / s. The extreme values that the measuring station has been able to determine since the measurements began are 0.1 m³ / s (1947) and 155 m³ / s (1999), respectively.

history

The river served the Roman city of Augusta Raurica to supply drinking water. For this purpose, a masonry underground aqueduct with the water intake was built above Liestal . The canal can still be viewed and walked in places today (in Heidenloch in Liestal and northeast of the sewage treatment plant in Füllinsdorf ).

Since the Middle Ages, waterworks have been located on the river or on derived commercial canals in several localities. The historic mills and sawmills existed until the 19th century or the early 20th century. The Gestadeck commercial district developed on the canal below the city near Liestal. The Sagi von Oltingen, which is still in operation today, was built in 1826 on the site of an older mill. The Rothenfluh saw, built around 1700, also had a loop, oils and plaster mill in the 19th century. The upper mill of Gelterkinden is mentioned as early as 1372, the mill of Sissach in 1323. In 1571 a paper mill was built near Lausen.

The water pollution of the Ergolz, which increased in the 20th century , was counteracted from 1960 with the construction of several sewage treatment plants .

bridges

On its way the Ergolz is spanned by over 100 bridges.

There are three historic stone arch bridges from the 19th century in Rothenfluh (Ergolzbrücke Im Weier “Römerbrücke”) and Sissach (Rheinfelder Bridge “Zollbrücke” and Allmend Bridge). Three covered wooden bridges cross the river, two in Sissach and one in Augst.

Main road 309 crosses the river six times between Ormalingen and Böckten. The A22 high-speed road crosses the river eight times between Böckten and Liestal .

Three railway bridges span the river, i. H. the Hauenstein route in Gelterkinden and Böckten and the Bözberg route in Kaiseraugst - Augst.

Individual evidence

↑ ^a ^b ^c ^d Geoserver of the Swiss Federal Administration ( information )
↑ Evaluations of the water network. (XLSX) FOEN , December 2013, accessed on August 10, 2017 (listing of Swiss rivers> 30km).
↑ ^a ^b Modeled mean annual discharge. In: Topographical catchment areas of Swiss waters: area outlets. Retrieved May 30, 2019 .
↑ Liestal measuring station 1934–2016 (PDF) Federal Office for the Environment FOEN
↑ Topographical catchment areas of Swiss waters: Ergolz
↑ Geoview canton Basel Country
↑ ^a ^b ^c ^d Name for the upper course
^ Berthold Moog: Once upon a time ... grinding and commercial mills in the canton of Basel-Landschaft. In: Mühlenbrief, 20, 2012.

Web links

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

[CH_GS-1] Geoserver of the Swiss Federal Administration ( information )

[gewiss-2] Evaluations of the water network. (XLSX) FOEN , December 2013, accessed on August 10, 2017 (listing of Swiss rivers> 30km).

[bafu-3] Modeled mean annual discharge. In: Topographical catchment areas of Swiss waters: area outlets. Retrieved May 30, 2019 .

[bafu1-4] Liestal measuring station 1934–2016 (PDF) Federal Office for the Environment FOEN

[5] Topographical catchment areas of Swiss waters: Ergolz

[6] Geoview canton Basel Country

[oberlauf-7] Name for the upper course

[8] Berthold Moog: Once upon a time ... grinding and commercial mills in the canton of Basel-Landschaft. In: Mühlenbrief, 20, 2012.