The first large-scale corrections were carried out between Hausen and Stetten between 1806 and 1823, because agriculture, traders and the newly established industrial enterprises in the Baden part of the Lower Wiesental suffered the consequences of the floods far more than the Swiss riverside landowners in Riehen and Basel. The canalisation of the river between Lörrach and Hausen was designed and carried out by Baden water engineer, Johann Gottfried Tulla. The present course of the Wiese on Swiss territory was already planned in the early 19th century by construction inspector Baader. Interesting is its absolutely straight course between the bridge over the Wiese at Weil and the Iron Bridge. It is parallel to the visual axis of Stetten Church and Basel Minster. The original embankment was a platform system ("Bühnensystem"), but in the 1850s it was replaced by a threshold system ("Schwellungssystem") after the serious flood of 1852. For the river bed, a double trapezoid profile was envisaged, with a summer bed and the flood water embankments. The banks were still largely reinforced with fascines, wattle and grass. Between 1847 and 1878 there were 13 severe floods, all of which led to damage and destruction of the riverbank defences. Only after the great Christmas flood of 1882 was a uniform defensive system built on the Swiss Wiese. One special feature is the correction carried out in 1898 using the Schindler system between the state border and the Weilstrassen bridge. In this system, the river profile follows a continuous, uninterrupted ground line, which neither receives a separate riverbed nor a separate bank formation. The advantages of this system are intended to be that flood defences would be less damaged during floods and the riverbed could absorb a larger water volume. The Schindler system proved unsatisfactory in the early years so that, between 1905 and 1910, the original wooden defences had to be replaced by stone blockwork. However, thanks to the Schindler's profile, a remarkable river meadow was formed between the state border and the Riehen swimming pool developed over the course of time on the right bank of the Wiese. It was only recently that this conservation-worthy meadow was severely damaged by the building work for the Zollfreienstrasse road. Corrective measures on the Wiese were hampered in past centuries by various natural circumstances and by human and/or administrative shortcomings.