Egelsee Mauren / FL - Tosters / AT
The Egelsee is a lake in the Austrian-Liechtenstein border area between the AT / Feldkirch district of Tosters and the Liechtenstein community FL / Mauren. The state border between the Republic of Austria and the Principality of Liechtenstein runs through the lake.
Originally a lake at the edge of the glacier, it was drained around 1830 by Alois Negrelli, who was working as a young hydraulic engineer in Vorarlberg at the time, and was then a swamp area. In 2011, the state of Vorarlberg and the Principality of Liechtenstein agreed to reactivate the Egelsee after almost 200 years in order to avoid flooding on the Liechtenstein side. The construction project was completed in 2013. As part of the construction costs of around 2.9 million euros, which were partly borne by the Republic of Austria and the Principality of Liechtenstein, the lake was converted into a retention pond and a new cycle and walking path was built around it. With a total retention volume of 40,000 m³, the Egelsee now provides flood protection for the Liechtenstein communities of Mauren.