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Echaz

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Echaz

The Echaz (German pronunciation: [ˈɛçats]) is a 23 km long river in Baden-Württemberg, Germany, a tributary of the Neckar.

It has its source on the Swabian Jura, near Lichtenstein, south of Reutlingen. After flowing through Pfullingen, Reutlingen and Wannweil, it discharges into the Neckar near Kirchentellinsfurt, which lies halfway between Reutlingen and Tübingen.

The origin of the Echaz is situated close to the Albtrauf south of the district Honau of the municipality Lichtenstein. The Echazquellen are situated below Lichtenstein Castle at an altitude of 557 metres above sea level at the south-eastern tip of the wedging open corridor of a valley, which continues as a wooded and steep ravine upwards for almost a kilometre and mostly dry up to the Ohafelsen.

These springs pour from 60 L/s to 2.000 L/s, on average about 680 L/s. At several places water is leaking out, which collects in the stream bed. However, a large part of the spring water is captured before it is discharged and after treatment is fed into the drinking water supply of the region, which also uses other water, for example from Lake Constance.

The lower Echaz springs have the heaviest rainfall. In the karst aquifer they have an underground catchment area of about 90  km², which therefore continues beyond the very close surface European watershed at the Albtrauf far to the south below the plateau of the Swabian Alb.

The Echazquelle is protected under the protected area number 841-50920044 as an extensive natural monument.

The Echaz continues to flow through Lichtenstein, the district Unterhausen and the towns Pfullingen and Reutlingen. Below Wannweil the river leaves the Reutlingen district and then flows into the Neckar at Kirchentellinsfurt from the right at 305.5 metres above sea level. So the river has a mean bed gradient of about 12 ‰ on the 22.8 km from the Echazquellen to the mouth of the river.

List of tributaries from the source to the estuary. Lengths of water bodies usually according to LUBW-FG10 (data record entries), catchment areas correspondingly according to LUBW-GEZG, lake areas according to LUBW-SG10, elevations according to the contour line image on the geodata viewer. Other sources for the data are noted.

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