Great Gaißach
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Große Gaißach name segments on the main line: Markgraben → Gaißach → Große Gaißach |
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 Große Gaißach east of Attenloher Filzen . |
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| Data | ||
| Water code | DE : 161796 | |
| location |
Alps
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| River system | Danube | |
| Drain over | Isar → Danube → Black Sea | |
| origin |
Name run Große Gaißach: confluence Gaißach / Schlierach 47 ° 44 ′ 44 ″ N , 11 ° 39 ′ 0 ″ E Gaißach: |
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| Source height | approx. 1340 m above sea level NHN | |
| muzzle | from the right and east on the northern edge of Gaißach zu Bad Tölz in a Mühlkanal next to the Isar Coordinates: 47 ° 44 '43 " N , 11 ° 33' 58" E 47 ° 44 '43 " N , 11 ° 33' 58" E |
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| Mouth height | 649 m above sea level NHN | |
| Height difference | approx. 691 m | |
| Bottom slope | approx. 50 ‰ | |
| length | 13.9 km from Q. Markgraben | |
| Catchment area | 34.27 km² | |
| Discharge at the Gaissach A Eo gauge : 36.8 km² Location: 3 km above the mouth |
NNQ (23.12.1955) MNQ 1956–2006 MQ 1956–2006 Mq 1956–2006 MHQ 1956–2006 HHQ (23.07.1966) |
70 l / s 250 l / s 1.04 m³ / s 28.3 l / (s km²) 21.2 m³ / s 85 m³ / s |
| Left tributaries | Geigenbach , Plattenbach , Kleine Gaißach | |
| Right tributaries | Schlierach , Rinnenbach | |
The Große Gaißach is a river that runs westwards on the southern edge of the Upper Bavarian Ammer-Loisach-Isar-Jungmoränenland and flows into the Isar from the right at the municipal boundary between Gaißach and Bad Tölz in the Bad Tölz-Wolfratshausen district . It arises from the confluence of the left main stretch of the upper reaches of the Tegernsee Flyschalpen from Markgraben and then Gaißach and the less significant right Schlierach west of Waakirchen - Marienstein already in the municipality of Reichersbeuern and is about 14 km long on the main strand.
geography
Upper course of the Markgraben
The marrow ditch , which is the border brook between Gaißach and Waakirchen along its entire length, arises at about 1340 m above sea level. NHN on the upper north slope of the Luckenkopf ( 1370 m ) about 200 meters east of the Fockensteinhütte in the forest. It runs down the slope for about 1.3 km, after which the somewhat longer Kesselgraben , which is noticeably richer in catchment area due to its many tributaries, comes to about 948 m from the east-southeast, the highest source of which rises at about 1285 m on the north slope of the Kogelkopf ( 1324 m ). In the direction of its inflow, the combined brook runs flatter about 0.7 km, after which it joins at a fork in the three valleys with the Geigenbach , which runs from the southwest, on the left bank at about 895 m in the basin borders on Waakirchen and on the right on Gaißbach and its sources are on the northern slope of the Gronetseck ( 1278 m ) and on the eastern slope of the Mitterberg ( 1280 m ). The highest of these rises at about 1225 m height, from it to the confluence with the Markgraben , where the Gaißach is now being formed, the water runs about 1.6 km. The Markgraben is around 2.0 km long and has a very large mean bottom slope of around 220 ‰.
Middle course Gaißach
The Gaißach begins to curve slowly to the right, at the end of which it runs northeast. Before that, at the westernmost point of the arch, the Plattenbach flows into a bridge ; like the Geigenbach, it comes from the southwest and has a broad system of spring brooks, the springs of which are in a semicircular arc on the Mitterberg in the south and the Rechelkopf ( 1330 m ) in the southwest. and in the west the Sulzkopf ( 1280 m ) distribute. The longest of the strands begins as a Rechelgraben on the saddle between Rechelkopf and Sulzkopf at an altitude of about 1251 m and is about 2.3 km in length to the Gaißach.
The Gaißach immediately connects to its completed right-hand bend by a 90 ° left-hand bend, on which it leaves the mountains of the Tegernsee-Flyschalpen and now meets the Schlierach coming from the east at only about 759 m , about 2.5 km west of the town center from Waakirchen- Marienstein . The Gaißach section is about 2.7 km long and has a fairly large mean bed gradient of around 50 ‰.
Long lower reaches of the Große Gaißach
This creates the Große Gaißach, still in the forest and now in the area of the municipality of Reichersbeuern , which after a further two kilometers westward between the now low mountains Vorberg ( 926 m ) in the south and Platten ( 879 m ) in the north into the area of the municipality Greiling changes, where it immediately enters a wide, flat and almost forest-free valley floor a little below 700 m . Here the Rinnenbach , which arises near Marienstein and then runs approximately parallel on the other side of the Platten, of the axis from Schlierach and its own previous course, runs towards it first from the east . This brook, already flowing in the shallow Ammer-Loisach-Isar-Jungmoränenland, is very meandering and with a distance of 4.9 km between the source and the mouth it is its longest inflow as the crow flies.
At this inlet, for example, the Große Gaißach begins to traverse the wide valley plain of the Attenloher Filzen in a south-westerly direction, which is mostly to the left of its now more winding course. In doing so, she passes the mill wasteland Attenloh on the right edge of the valley, the first settlement on her bank. After the further passage of the Filzen, the Kleine Gaißach, which is very winding in it, flows out of it at an altitude of about 665 m, already in the area of the community Gaißach ; their high upper reaches drain of Sulzkopfes the north and northwest slope, on the highest and mündungsfernsten source occurs to about 1137 m height initially a Mark trench at the boundary between Greiling and Gaißach, with him reach the small Gaißach a length between 5 and 6 km .
In a winding westward course, the water then runs through the Gaißach village of Mühle and crosses the Holzkirchen – Lenggries railway under a railway bridge . Then it is in the right Isaraue Grenzbach zu Bad Tölz in the north and divides at the settlement area Am Sägbach von Gaißach into two estuary arms. Both branches cross under the B 13 , the much shorter left then flows less than a hundred meters further west, after the Linsensägbach has branched off to the right, into the Isar . The noticeably longer right, on the other hand, flows into the Linsensägbach, which then flows into the Isar after a parallel run next to the river over a kilometer and a half further north in the center of Tölz at about 649 m above sea level.
The name run of the Große Gaißach is about 9.8 km long and has an average bottom slope of only about 11 ‰.
Catchment area
The Große Gaißach drains 34.3 km² in a total approximately west-northwest direction to the Isar . To the north of it lies a wide plain with a few watercourses, most of which also seep away. Beyond the eastern watershed, the Festenbach runs into the Mangfall , beyond the southeast the Breitenbach runs into the Tegernsee , which drains into the Inn tributary Mangfall; the greater catchment area border between the Isar and Inn runs on this section on the ridge. The major competitor in the south is the Steinbach , which also flows into the Isar in a westerly direction a little upstream. Because the western border of the catchment area is short and mostly already runs in the Isar valley, there are no relevant inflows to it on this side in front of the Isar itself.
The highest peaks in the catchment area, which in the area of the Flysch Alps drops sharply but irregularly to the north, are on the southern edge, they are the peaks of the 1370 m high Luckenkopf in its southeast corner and the 1330 m high Rechelkopf about in the middle of the southern sheath. Forest stands on over half of the catchment area, and there is almost only free land in the lower areas on the north, north-west and west edges, which is why there is little settlement.
Individual evidence
BayernAtlas ("BA")
Official online waterway map with a suitable section and the layers used here: Course and catchment area of the Gaißach
General introduction without default settings and layers: BayernAtlas of the Bavarian State Government ( notes )
- ↑ a b c d e f g h i j k l m Height queried on the official map background layer (right click).
- ↑ a b c d e f g h i j Length measured on the background layer of the official map .
- ↑ a b c d e f g h Height according to black lettering on the background layer of the official map .
Water directory Bavaria ("GV")
- ↑ Length according to: Directory of brook and river areas in Bavaria - Isar river area, page 11 of the Bavarian State Office for the Environment, as of 2016 (PDF; 2.5 MB)
- ↑ Catchment area according to: Directory of stream and river areas in Bavaria - Isar river area, page 11 of the Bavarian State Office for the Environment, as of 2016 (PDF; 2.5 MB)
Others
- ↑ Hansjörg Dongus : Geographical land survey: The natural space units on sheet 189/195 Tegernsee. Federal Institute for Regional Studies, Bad Godesberg 1994. → Online map (PDF; 5.2 MB)
- ^ Deutsches Gewässerkundliches Jahrbuch Danube region 2006 Bavarian State Office for the Environment, p. 190, accessed on October 4, 2017, at: bestellen.bayern.de (PDF, German, 24.2 MB).
literature
- Official topographic maps (ATK) 1: 25,000 of the State Office for Digitization, Broadband and Surveying Bavaria :
- No. Q11 Bad Toelz
- No. Q12 Tegernsee