The name of the Lech was already coined by the Celts around 8 BC. The name "Licca" or "Lecha" meant "the stony one". If you take a look at the river bed with its characteristic gravel banks, which appear at low water, you can easily understand the name. Incidentally, in addition to stones, gold was also washed out of the river's sediments in the past. However, the river had a much greater economic significance due to its waterpower, which used to drive mills and is now used to generate electricity. In addition, the Lech also served as a natural border between Bavaria and Swabia, a fact that can still be traced today in the dialects of the two regions.