Mettma

Highlighted during the Mettma

The Mettma is a tributary of the Schlücht in the Black Forest in Baden- Württemberg.

• 4.1 Mining
• 4.2 mills and sawmills along the Mettma
• 4.3 castles along the Mettma

Geography and topography

The Mettma runs between the parallel valleys of the Schwarza in the west and the upper Schlücht following in a generally south-southeast direction, the Abdachungsrichtung the eastern Hotze forest. It rises over 1 km east of the Schluchsee and less than 1 km west of the village Faulenfürst (municipality Schluchseewerk ) in the district of Breisgau in the Black Forest. The highest spring is located in Won Fohrenbühl to about 1027 m above sea level. NN.

The Mettma reached after less than 3 km, first through a high valley in continuation of the Schluchsee eastwards flowing, the territory of the district of Waldshut and then changes shortly before Rothaus (municipality Grafenhausen ) the flow direction sharp snapping off to the south. In the further course of the river to its confluence with the Schlücht the valley narrows and forms the basement of the Black Forest, a 100 to almost 200 m deep V-shaped valley. At the confluence with the Schlücht the Mettma results despite almost equal catchment area a little more water, mainly because it gets slightly higher rainfall totals.

Lakes in the river course

At kilometer 4.2 above the mouth of the river by a dam is dammed to Mettmabecken. The reservoir reached with full back a length of 1.5 km and a width of approximately 125 m.

Use and development

The valley is primarily used for forestry. Tourist of the beautiful valley is little used, although the eastern route of the middle path follows the valley. The Mettmastausee is not available for recreational uses.

Hydropower

The Mettmastausee that belongs to the eastern branch of the pumped-storage network Schluchseewerk, hydropower use in conjunction with the main axis of the three-stage pump storage power plant between Schluchseewerk and Rhine and the western side arm, which integrates the Albtal with the Albstausee serves. This network is one of two large pumped storage plants of Schluchseewerke AG in the Black Forest.

Traffic

For public transport with motor vehicles, the Valley of the Mettma, apart from trans- community connections, almost the entire length is not accessible.

The upper reaches of the Mettma will be accompanied for a short distance from the provincial road 170, between Seebrugg (municipality Schluchseewerk ) and Bonn village combines the B 500 with the B 315. At the mouth of the Schlüchttalsstraße crosses (L 157) of Gurtweil ( Waldshut -Tiengen ) to Rothaus (municipality Grafenhausen ) the Mettma. In between is the valley of three Local roads, Berau - Riedern ( districts of Uhlingen birch village), Brenden ( Uhlingen - Birkesdorf ) at the forest - crossed Grafenhausen - Buggenried ( Grafenhausen ) and Schoenbach ( Grafenhausen ).

Minerals

In Mettmatal there, especially on the mountain ridge between Schwarza and Mettma, deposits of fluorspar, used in the manufacture of fluorine and fluorine compounds, and of galena, associated with silver. You are no longer mined today (see below).

History

Mining

In Mettmatal the outcropping on the slopes veins were probably already in the Middle Ages, and probably much earlier, degraded. The metal was actually coveted the silver, but that does not appear dignified and therefore required the removal of the silver-containing galena. The Won Name Silberberg below the village Buggenried (municipality Grafenhausen ) goes back to this degradation.

The degradation was operated in the Middle Ages from St. Blaise monastery or imposition of a charge, which the government was involved from the front Austria. The mined galena was then smelted in Wurkehof in Todtnau and brought the raw silver recovered in a hut in Freiburg im Breisgau to higher fineness. Busy is the use of silver as coinage in Freiburg's coin. Lead was used in the Middle Ages, among others in the construction of windows, stone connections or sheets.

The degradation of minerals came with imports cheaper silver already at the end of the Middle Ages more and more to a halt. In the 20th century (especially in 1900, 1922-1926 and around 1939 ) Probeschürfungen were made mainly in Mettmatal, but also in Schwarzatal. They led from 1923 to 1926 to renewed mining of galena. The Pforzheimer river and Schwerspatwerke GmbH began in the pit Brenden 1959-1962 with the removal and temporary promotion of fluorspar and barite river is still mined in the Black Forest on a large scale in the Clara mine. In Urberg Opened in 2001, the mineral museum gives visitors an insight into the work of the former river and Schwerspatbergwerk " glory of God " in hell - Bildstein.

Mills and sawmills along the Mettma

The water power of the Mettma was used by several cereals and saw mills as the Schaffhausen saw, Klausmühle, Buggenrieder mill, heather mill and the mill hole.

In the Middle Ages, water was performed on the western side of the valley along up to Berau to use there among other things, hydropower can use the Berauer Wuhr.

Castles along the Mettma

• Castle Mandach