After 8.4 kilometers of flow distance in the district Schönau vor dem Walde the Leinakanal branches off to the right. Shortly after, streams flow in from both sides. From Schönau vor dem Walde the small river turns to the north. In maps from the beginning of the 20th century the name Wilde Leina is written here. After the inflow of the Cumbach from Cumbach the name Leina-Hörsel.[1] In the further course to the north the Schilfwasser coming from Ernstroda flows in from the left.
Hörsel
The Hörselaue in Schönau (Wutha-Farnroda)
In Leinatal-Leina after 16.3 kilometres with the inflow of the Altenwasser (also: Altes Wasser, from right) the name Leina ends completely. From here the river is called Hörsel and its course turns to the northwest.
The total length of the river "Kleine Leina-Hörsel" is 48.5 km, over the 52.6 km long Nesse the Hörsel is even about 62 km long.
Tributaries
The so-called Bridge Totenbrücke over the Leina (Finsterbergen)The Hörsel near Eisenach
The catchment area of the Hörsel is divided into two major landscapes. The headwaters Leina and left tributaries come from the Thuringian Forest, while all right tributaries come from the Thuringian Basin and its edge plates. Correspondingly, the upper reaches of the left tributaries are typical low mountain streams with deep gorges and a large bottom gradient, while the right tributaries are mostly lowland rivers with a small gradient, almost all of them flowing into the Hörsel via the Nesse. Today, their courses are mostly straightened and integrated into a system of drainage ditches.
The catchment area of the Nesse comprises 426.3 km2, 54.4% of the total catchment area of the Hörsel and 139.5% of the Hörsel catchment area above the Nesse estuary (305.6 km2). Thus, the Nesse brings about the same amount of water (3.14 m2/s) to unite with the Hörsel as the Hörsel itself (3.11 m2/s).
A pipeline from the Leina - and the (upper) Apfelstädt from the system Gera/Unstrut/Saale/Elbe - to the subsystem of the Nesse is the Leinakanal, which was already built in the Middle Ages to supply the city Gotha with water from the Thuringian Forest. The flow distance of the Hörsel over the upper reaches of the Leina, the Leina Canal, the Wilden Graben from the Leina Canal, the Nesse (middle and lower reaches) and the Hörsel Lower reaches is 8.4 + 29.5 + 9.8 + 26.0 = 73.3 km.
^Stream lengths according to geotracks (kmz, 150 kB)
^ abThüringer Landesanstalt für Umwelt (publ.): Regional and Waterbody Figures (Gebiets- und Gewässerkennzahlen) - directory and map. Jena 1998, 26 pages.
^"Leina/Hörsel longitudinal section"(PDF). Archived from the original on 2015-04-14. Retrieved 2020-09-04.{{cite web}}: CS1 maint: bot: original URL status unknown (link) (TLUG Jena) - PDF, 66 kB
^Löbersbach and Roter Bach both flow into the Eisenacher Mühlgraben (left side arm, 2,9 km), however, the Löbersbach is obviously not subordinate to its water body identification number (41694), since the sub-catchment area of the Hörsel between the Michelsbach estuary and the former Spicke reservoir - where the Mühlgraben flows into it - is only 11.6 km2, which clearly exceeds the sum of both stream catchment areas. Moreover, the Hörsel's sub-catchment area between the Nesse and Michelsbach estuary is 14.8 km2, which would not be possible on the right side of the Mühlgraben, due to the direction of the Michelsbach, so it must contain the Löbersbach. In former times, the Löbersbach and the Marienbach ran separately from each other; a branch canal that existed at times was called the "Suez Canal".
^The Rotebach drains the Georgental and now flows into the Mühlgraben at Festplatz Spicke, Adam-Opel-Straße, only about 40 m from its mouth into the (present) Hörsel.
