Allna

The Allna source

The Allna is a 19.1 km long, orographic right-hand or western tributary of the Lahn in Marburg- Biedenkopf, who, just north of state road 255 in Gladenbacher mountain country in east-west direction approximately Glad Bach to Niederweimar (south of Marburg) runs to further south to open a few kilometers in the Lahn.

The catchment area of ​​Allna is largely consistent with the montaneren natural space Damshäuser hilltops in the West and the shallow soil and significantly narrower Elnhausen -Michel Bacher valley, supplemented by the western slopes of the central and southern Marburger back to the east. Since the establishment of the estuary arm par - Allna drained these smaller parts of the natural region Salzbödetal.

Course

The Allna Springs, northwest of the Gladenbacher district Runzhausen in several source fluxes at the eastern slopes of the so-called Allberge, such as the 552 m above sea level. NN high Daubhaus and its northern foothills are also known in the southeastern Bottenhorner plateaus.

In its upper reaches the Allna first flows in an easterly direction over Bellnhausen after Sinkershausen, then in a south-easterly direction through Frohnhausen and Friebertshausen (all city Gladenbach ). With the inflow of coming from the same district Rüchenbaches it changes its direction from southeast to east.

In Allna (municipality Weimar) the Allna changes its direction further to the northeast in order to turn in Hermershausen (district of Marburg) back to the southeast. Here it flows from the north to the Ohe that was previously followed her northeast parallel and has immediately taken before emptying the Elnhauser water.

After passing Haddamshausen ( Marburg ) and the inflow of Cyriax Weimar stream from the eponymous district of Marburg in the northeast of the Allna (municipality Weimar again) reached at Niederweimar the Marburg Lahn valley sink.

Just north of Argentina stone ( also community Weimar) branches off since the summer of 2011, the 4.5 km long right tributary par - Allna in südsüdwestliche, Lahn parallel direction, while the main arm maintains its south-easterly direction to lead after 500 meters into the Lahn.

Nature Spatial allocation

The Allna and its tributaries drain into the upper and middle reaches of the longer rivers the natural environment and ridge Damshäuser peaks ( 320.10 ) and in the lower reaches of the Elnhausen -Michel Bacher Valley ( 320.11 ), the dividing line to the southerly Salzbödetal ( 320.12 ) is essentially based on the watershed between the Allna and the southern tributaries Salzböde Lahn- oriented ( in the west) and Wenkbach.

The upper reaches of the Allna dewatered in the main, the southern, the Ohe the central and northern Damshäuser hilltops, where the waters of the north-eastern hills, especially on the Walter Bach, initially flow to the Elnhauser water.

The Elnhauser water is the main watercourse of the Elnhausen -Michel Bacher valley that extends south across the lower reaches of Allna up to the headwaters of the Rüchenbaches and additionally contains the basin of the directly draining to the Lahn Michel creek to the north. The Elnhauser water and the Allna from its mouth also take still water of the western slopes of the central and southern Marburger back ( 348.00 ) on.

The western dividing line of the hilltops to the high plateau of Bottenhorner plateaus ( 320.01 ) at which the peak of Daubhaus is already counted, again based on the watershed between Allna and Salzböde.

Tributaries

The following tributaries flow of Allna or the par - Allna (* ), etc. to:

Skip to main flow question

• When inflow of Ohe brings these nearly 30 % more water than the Allna itself ( 337.4 l / s vs. 263.1 l / s). The turn brings the Elnhauser water inflow into the Ohe slightly more water than the Ohe itself ( 170.5 l / s vs. 165.7 l / s) Finally, the Walter Bach brings the inflow into Elnhauser water with more water than this ( 63.7 l / s vs. 58.4 l / s)

This would - in strict accordance with the hydrological point of view - the hierarchy exactly reversed, ie Walter Bach would be the main flow and successively flowed him Elnhauser water, Ohe and Allna to!

However doubles the Ohe their water flow with a flow of water Elnhauser just good half a kilometer from its confluence with the Allna. If so, for example, Hermershausen to a reservoir, the Allna would be the biggest of its three tributaries.