Wild Gera
| Wild Gera | ||
 The Wilde Gera at the confluence with the Zahmer Gera (right) |
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| Data | ||
| Water code | DE : 56422 | |
| location | Ilm district , Thuringia , Germany | |
| River system | Elbe | |
| Drain over | Gera → Unstrut → Saale → Elbe → North Sea | |
| source | At the Großer Beerberg 50 ° 39 '14 " N , 10 ° 45' 18" E |
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| Source height | approx. 850 m above sea level NN | |
| muzzle | Form the Gera coordinates in Plaue with the Zahmer Gera : 50 ° 46 ′ 30 ″ N , 10 ° 53 ′ 45 ″ E 50 ° 46 ′ 30 ″ N , 10 ° 53 ′ 45 ″ E |
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| Mouth height | 327 m above sea level NN | |
| Height difference | approx. 523 m | |
| Bottom slope | approx. 23 ‰ | |
| length | 22.8 km | |
| Discharge at the Gehlberg A Eo gauge : 12.5 km² Location: 16.2 km above the mouth |
NNQ (1971) MNQ MQ Mq MHQ HHQ (08/10/1981) |
20 l / s 79 l / s 412 l / s 33 l / (s km²) 4.8 m³ / s 25.7 m³ / s |
| Left tributaries | Lütsche | |
| Medium-sized cities | Suhl | |
| Small towns | Plaue | |
| Communities | Geratal | |
The Wilde Gera is one of the two source rivers of the Gera on the northern slope of the Thuringian Forest . It is longer and richer in water than the other source river, the Tame Gera . In its 23-kilometer run, it overcomes around 570 meters of altitude , which corresponds to an average gradient of 25 meters of altitude per km of flow.
geography
The sources of the Wild Gera are only a few meters north of the Rennsteig in the area between Schmücke and Oberhof . The longest source stream is the Schmücker Graben . It rises from the Black Puddle and the Guntermannsbrunnen and initially flows further north. To the east of the brook lies the Schneekopf (978 m); west of the Great Beerberg (983 m), the two highest mountains in Thuringia . The Schmücker Graben takes on the Steinbach from the left before it flows in a wide curve to the east. In the further course it then takes up the Sattelbach and Schnabelbach from the left . This place is called Cameroon because it is said to be just as dark there as in the jungle of Cameroon . Now you can see the east portal of the Brandleitetunnel . The Neudietendorf – Ritschenhausen railway is the first traffic route in the Wild Gera Valley. This flows from here to the east in the Gehlberger ground where the station of Gehlberg and Gehlberger mill located. In the Gehlberger Grund, the Wilde Gera takes in the snow pot and the Edelmannsbach from the right . The village itself is on the left on a plateau about 730 meters above sea level. The height in the valley is 598 meters at the Gehlberg train station. Below the Gehlberger Grund, the valley narrows again and the wild Gera makes another curve to the north. The approximately 13-kilometer-long scaffold tunnel , built from 1977 to 1981, comes to light here. It directs water from the Wilder Gera to the northwest into the Ohratalsperre . Since the Gehlberger Mühle there is also a road in the valley that connects the place with Gräfenroda .
The valley is now widening again. Another valley floor opens to the west, the Kehltal . This is about five kilometers long. In it runs a road to Oberhof , which forms the western end of the valley. The Rennsteig tunnel escape tunnel is also located in the valley . On the left mountain slope you can see the burned- out stone , a tunnel driven into a porphyry block at the end of the 17th century for the construction of the Lütsche raft ditch . After a left bend, the most impressive structure in the Wilde Gera valley becomes visible: the Wilde Gera viaduct on the A71 . It is 110 meters high. Behind the bridge the valley becomes very narrow again. The railway line disappears here in the 104.5 meter long tunnel at Zwang . The Schwarzbach flows northwest of the tunnel from the right. In its two kilometer long valley there is also a bridge of the A 71, the Schwarzbachtal valley bridge . On the left side of the slope, the robbery castle is visible, a ruined castle where robber barons hid in the Middle Ages . After about 200 meters, the Sieglitz joins the wild Gera from the left . It is about four kilometers long and also rises near Oberhof.
Now the valley widens noticeably and the first sawmill in Dörrberg , a current district of Geratal , can be seen. Dörrberg developed from a hammer mill and today has about 100 inhabitants. Graefenroda is an elongated street village that stretches for about five kilometers in the valley of the Wild Gera. The wide meadow valley that forms the Wilde Gera near Dörrberg is known as the Gräfenrodaer Grund . From the left the longest tributary flows into the Wilde Gera: the Lütsche , a creek about seven kilometers long. The Gräfenrodaer Kichholz extends to the left , around which the Gotha – Graefenroda (Ohratalbahn) line draws a tight arc. The Wilde Gera was relocated to the eastern edge of its valley in the Graefenrodaer local area. It crosses under the B88 at the Graefenroda Ort station of the Ohratalbahn. The Erfurt – Schweinfurt railway line runs a little further up along the eastern slope of the valley. At the Gräfenroda swimming pool, the Wilde Gera crosses the road from Gräfenroda to Plaue . This is where the Gräfenrodaer Ried begins. The slopes on both sides are no longer as high as above the village. Gräfenroda now extends for about two kilometers. At the northern end of the village, the Ohratalbahn and the railway line Erfurt-Schweinfurt unite the station Gräfenroda .
On the left bank, halfway between Graefenroda and Liebenstein , you can see the mass mill . The 400-inhabitant town of Liebenstein begins a little further north . The focus here is Liebenstein Castle on the left slope of the valley. It was built in the 12th century by the Counts of Kevernburg to protect the valley . In Liebenstein, the Gissel flows into the Wilde Gera from the left . It is a small stream that is often dry in summer. Their sources are located near the village of Frankenhain . Behind Liebenstein, the valley is so wide that agriculture is possible. Here a large part of the river seeps into karst crevices. The left valley slope is still steep here and forms the Plauescher Berg , the right valley slope rises gently to Rippersroda . The valley opens to the right and the Tame Gera can be seen. On the left slope of the valley, already in Plaue , is the Plauesche Spring , a karst spring with a very high outflow volume, from which the water that seeped away behind Liebenstein emerges again with a high time lag. An explanation for the high time lag compared to the river could be a previously undetected large underground water reservoir. Now the Wilde Gera passes under the former B4 before it joins the Zahmen to the Gera south of the city center of Plaue .
history
The origin of the river name goes back to the Slavic turns. In old records the "Wilde Gera" is called "Wendish Ger", which also explains its name and shows its Wendish origin.
In order to be able to control the valley of the Wild Gera, three castles were built along its course in the Middle Ages:
- the robbery castle above Dörrberg,
- the Liebenstein above Liebenstein and
- the Ehrenburg above Plaue.
environment
The upper reaches of the wild Gera to Graefenroda has drinking water quality, many protected animal and plant species are native here; From Gräfenroda the water pollution is moderate.
Individual evidence
- ↑ Level: Gehlberg On: hnz.tlug-jena.de
- ↑ Chronik der Stadt Plaue, by Felix Georgi, 1927, publisher: A. Frauendorff, p. 7
