Gerolsbach (river)

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Gerolsbach
Kleine Ilm
Data
Water code DE : 13682
location Lower Bavarian hill country

Bavaria

River system Danube
Drain over Ilm  → Abens  → Danube  → Black Sea
source Pond outflow approximately 0.4 km south-east of the Ortsrandes of Gerolsbach- Junkenhofen
48 ° 27 '40 "  N , 11 ° 19' 15"  O
Source height approx.  485  m above sea level NHN
muzzle from left and south-west in Pfaffenhofen in the upper Ilm coordinates: 48 ° 31 '33 "  N , 11 ° 30' 25"  E 48 ° 31 '33 "  N , 11 ° 30' 25"  E
Mouth height approx.  424  m above sea level NHN
Height difference approx. 61 m
Bottom slope approx. 3 ‰
length 20.2 km
Catchment area 95.14 km²

The Gerolsbach , also known as the Kleine Ilm , is an approximately 20 km long river in the Upper Bavarian district of Pfaffenhofen an der Ilm that runs to the north-east and flows into the upper Ilm from the left in the town of Pfaffenhofen an der Ilm .

geography

course

The Gerolsbach rises south of the parish village Junkenhofen between the Einöden Forsthof in the south and Voglhof in the north in the area of ​​the municipality Gerolsbach from a small pond on the northern edge of a wood. It flows initially in a northerly, then northeast, and finally a long east-northeast direction through a hilly landscape that is predominantly agricultural up to the city limits of Pfaffenhofen. Sections of the state road St 2050 to Gerolsbach- Klenau , the district road PAF 5 to Gerolsbach- Singenbach , the St 2084 to Scheyern - Euernbach and the St 2045 to run alongside the river in the valley basin, which is often less than 30 meters deeper than the surrounding hills the edge of the settlement of the mouth of Pfaffenhofen an der Ilm. The Gerolsbach flows into the Ilm south of the old town of Pfaffenhofen.

After a 20.2 km long path with an average bed gradient of only about 3 ‰, the river flows about 61 meters below its origin.

Catchment area

The 94.2 km² catchment area of ​​the Gerolsbach belongs, from a natural point of view, to the Danube-Isar hill country of the Lower Bavarian hill country . Its about 545  m above sea level. It reaches its greatest height on a forest hill carrying a radio mast on the eastern border near the Gerolsbach wasteland of Wüstersberg .

Beyond the right, southeastern watershed, the upper Ilm collects its left tributaries, all of which are much smaller, in front of the Gerolsbach. Behind the western smaller streams run again from the right to the Weilach whose drain on the pair reached the Danube. In the northwest and north, shorter tributaries run further down to Paar. The northeastern watershed all the way back to the estuary borders only briefly on the catchment area of ​​the downstream Ilm, which feeds the Danube deeper over the Abens .

Tributaries

List of tributaries from the source to the mouth. With water length, catchment area and height. Other sources for the information are noted. Selection.

Origin of the Gerolsbach at about 485  m above sea level. NHN as about 0.4 km southeast of the outskirts of Gerolsbach- Junkenhofen between the Einöden Forsthof in the south and Voglhof in the north. The stream initially flows north.

  • (Inflow from the Weißgrund ), from the left and southwest to about 482  m above sea level. NHN on the southern edge of Junkenhofen, approx. 3.2 km and approx. 16.7 km². Flows at about 498  m above sea level. NHN a small pond southeast of Schiltberg - Metzenried . Inconsistent. Considerably longer and richer in catchment area than the main branch, which was less than 0.4 km long until this inflow.
  • (Bach from the direction of Wolfertshausen), from the right and south to 461  m above sea level. NHN in Gerolsbach- Singenhofen , approx. 2.2 km and approx. 1.6 km². Arises at about 512  m above sea level. NHN on the western edge of Gerolsbach- Wolfertshausen .
  • Stockhausener Graben , from the left and northwest to about 457  m above sea level. NHN in Gerolsbach, approx. 1.7 km and approx. 3.2 km². Arises at about 480  m above sea level. NHN near Gerolsbach- Stockhausen .
  • Sechenbach , from the left and west-northwest to about 448  m above sea level. NHN before Scheyern - Euernbach , approx. 2.6 km and approx. 3.4 km². Arises at about 471  m above sea level. NHN near Gerolsbach- Thalern .
  • Seegassgraben or Haarmoosgraben, from the left and west-northwest to about 444  m above sea level. NHN to Euernbach, 3.7 km and 15.0 km². Arises at about 469  m above sea level. NHN near Gerolsbach- Oberwengen .
  • Zedelseebach , from the left and northwest to about 443  m above sea level. NHN near Scheyern- Schmidhausen , approx. 4.0 km and approx. 9.1 km². Initially arises inconsistently at about 466  m above sea level. NHN at a field cross south of Hohenwart - Ellenbach .
  • Froschbach , from the left and northwest to about 437  m above sea level. NHN before Scheyern- Gneisdorf , 3.3 km and 5.7 km². Arises at about 462  m above sea level. NHN northwest of Pfaffenhofen an der Ilm - Schabenberg .
  • Pudelbach , from the right and southwest to about 434  m above sea level. NHN in Scheyern- Mitterscheyern , 7.1 km with the longer left upper course Schnatterbach and 13.5 km². The Schnatterbach arises at about 485  m above sea level. NHN south of Gerolsbach- Hudlhub .
  • (Bach from the direction of Wolfsberg), from the left and north-northwest to about 433  m above sea level. NHN near Scheyern- Daselmühle , 3.8 km and 5.0 km². Arises at about 474  m above sea level. NHN near Pfaffenhofen- Wolfsberg . Inconsistent.

Mouth of the Gerolsbach from the left and finally about west to 424  m above sea level. NHN across from Georg-Hipp-Straße in Pfaffenhofen from the left and south-west into the upper Ilm . The Gerolsbach is 20.2 km long and has a catchment area of ​​95.1 km². Thus it comes very close to the corresponding values ​​of the Ilm at the mouth, which is 31.1 km long up to there and has previously accumulated a 139.6 km² sub-catchment area.

Localities

Places on the run with their affiliations from the source to the mouth. Only the names of the lowest nesting level denote neighboring settlements.

Individual evidence

BayernAtlas ("BA")

Official online waterway map with a suitable section and the layers used here: Course and catchment area of ​​the Gerolsbach
General introduction without default settings and layers: BayernAtlas of the Bavarian State Government ( notes )

  1. ↑ a b c Height requested on the background layer Official map (right click).
  2. ↑ Height after black lettering on the background layer of the official map .
  3. ↑ a b c d e f Length measured on the background layer of the official map .
  4. ↑ a b c d e Catchment area measured on the background layer of the official map .
  5. ↑ Height according to the blue lettering on the official map background layer .

Water directory Bavaria ("GV")

  1. ↑ a b Length according to: List of brook and river areas in Bavaria - Lech to Naab river area, page 86 of the Bavarian State Office for the Environment, as of 2016 (PDF; 2.9 MB) (and the following page for tributaries; the number of pages may change.)
  2. ↑ a b Catchment area according to: List of brook and river areas in Bavaria - Lech to Naab river area, page 86 of the Bavarian State Office for the Environment, as of 2016 (PDF; 2.9 MB) (and the following page for tributaries; the number of pages may change.)

Others

  1. ↑ Ralph Jätzold: Geographical land survey: The natural space units on sheet 172 Nördlingen. Federal Institute for Regional Studies, Bad Godesberg 1962. →  Online map (PDF; 3.9 MB)
  2. ↑ Otto Sporbeck, Hansgeorg Schlichtmann: Geographical land survey: The natural space units on sheet 173 Ingolstadt. Federal Institute for Regional Studies, Bad Godesberg 1990. →  Online map (PDF; 3.6 MB)
  3. ^ Hans Graul : Geographical land survey: The natural spatial units on sheet 180 Augsburg. Federal Institute for Regional Studies, Bad Godesberg 1962. →  Online map (PDF; 4.1 MB)
  4. ^ Günther Michler: Geographical land survey: The natural space units on sheet 181 Munich. Federal Institute for Regional Studies, Bad Godesberg 1994. →  Online map (PDF; 4.4 MB)

Web links

Map of the course and catchment area of ​​the Gerolsbach on: BayernAtlas of the Bavarian State Government ( information )