Grailsbach
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Grailsbach Lachgraben |
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 The Woog in Mörstadt, which is flanked to the north by the Grailsbach |
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| Data | ||
| Water code | DE : 23934 | |
| location | Wonnegau , Alzey-Worms district , Rhineland-Palatinate | |
| River system | Rhine | |
| Drain over | Rhine → North Sea | |
| source | in the west of Niederflörsheim 49 ° 39 ′ 14 ″ N , 8 ° 12 ′ 7 ″ E |
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| Source height | 169 m above sea level NHN | |
| muzzle | immediately south of Rheindürkheim's coordinates: 49 ° 40 ′ 55 " N , 8 ° 21 ′ 11" E 49 ° 40 ′ 55 " N , 8 ° 21 ′ 11" E |
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| Mouth height | 86 m above sea level NHN | |
| Height difference | 83 m | |
| Bottom slope | 6.7 ‰ | |
| length | 12.4 km | |
| Catchment area | 52.3 km² | |
| Left tributaries | Dalsheimer Bach, Abenheimer Waschbach, Kreielsbach, Graben am Wormser Weg | |
| Right tributaries | Lämmerweider blades | |
| Communities | Niederflörsheim , Mörstadt , Abenheim | |
The Grailsbach is a 12 km long left, western tributary of the Rhine in the Rhine-Hessian Wonnegau . Its east-northeast-facing upper course, which is a good 10 km long and takes up most of its length, is also called the Lachgraben .
Along with the Seebach flowing further north , the Pfrimm , which flows further to the south, and the Eisbach, which flows further south , the Grailsbach is one of the four main rivers of the gently undulating Wonnegau hill country , which lies in front of the significantly higher Alzeyer hill country to the east and also belongs to the Rheinhessen table and hill country . It is by far the smallest of them and also the only one that runs completely in this landscape. Unlike Eisbach and Pfrimm, which at least bring water from the Palatinate Forest, the entire catchment area of the Grailsbach is in the rain shadow of both the northern Palatinate uplands and the upstream Alzeyer hill country. Therefore, the discharge rate is still well below that of the Selz and the discharge (MQ) is hardly more than 50 liters per second.
course
The Grailsbach rises at 169 m above sea level. NHN on the railway line at the level of Weinbergstrasse in Niederflörsheim, today the southern part of Flörsheim-Dalsheim . From beyond the railway it is fed by a 1.92 km long trickle coming from the north, which only carries water temporarily and originates on federal road 271 north-west of Dalsheim.
After 2.50 km of flow to the east, the 2.41 km long Dalsheimer Bach flows to it from the left and north-west. With 4.17 km² it drains a catchment area that is only slightly smaller than the Grailsbach up to then (5.97 km²). The stream flows further to the northeast in the north of Mörstadt , where after a total of 4 km of flow, the Mörstädter Woog , a village pond, is flanked to the north immediately upon entering the settlement area . On its further way, the stream crosses under the federal motorway 61 and then flows immediately south of Abenheim . Here, after 7.32 km and 17.17 km² from the northeast, the 4.07 km long and 10.54 km² draining Abenheimer Waschbach flows into it.
After a total of 10.46 km and 33.43 km ² flow path surface of the dewatered Grailsbach is forced to the direction of the left and the south from Herrnsheim coming, nominally 2.77 km long (measured: 3.47 km) lambs Weider blades , the 8 , Has drained 43 km². After only 0.69 km² of flow to the north, the stream changes its direction of flow again at right angles and takes over the east direction of the 0.91 km (measured: 1.01 km) short, up to then 6.07 km², Kreielsbach s coming from the left , to flow into the Rhine from the left after a further 1.21 km². By then, the brook had drained an area of 52.30 km² over a length of 12.36 km.
Hierarchy in the water stationing
The Grailsbach is, in the older service still under the name Lachgraben , in the water stationing in Rhineland-Palatinate under the GKZ 2393442 currently as a tributary of the Lämmerweider Klingen (239344) and this in turn as a tributary of the Kreielsbach (23934). This not only contradicts official maps that also label the lower reaches of Grailsbach - including those that label the upper reaches with Lachgraben ( e.g. TK 25 at BfN) - but also to the drained catchment areas:
- 34.61 km² compared to 8.43 km² at the confluence with the blades, the length ratio is 10.46 km to 3.47 km
- 43.25 km² compared to 6.07 km² at the confluence with the Kreielsbach; 11.15 km vs. 1.01 km
Individual evidence
- ↑ a b c d e f Map service of the landscape information system of the Rhineland-Palatinate nature conservation administration (LANIS map) ( notes )
- ↑ a b GeoExplorer of the Rhineland-Palatinate Water Management Authority ( information )
- ↑ Map services of the Federal Agency for Nature Conservation ( information )