Annoyance
| Annoyance | ||
 Map of the Ärgera |
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| Data | ||
| Water code | CH : 232 | |
| location | Canton of Friborg ; Switzerland | |
| River system | Rhine | |
| Drain over | Saane → Aare → Rhine → North Sea | |
| source | in the Plasselbschlund | |
| muzzle | at Marly in the Saane coordinates: 46 ° 46 ′ 47 " N , 7 ° 7 ′ 36" E ; CH1903: 576175 / 180998 46 ° 46 '47 " N , 7 ° 7' 36" O
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| length | approx. 20 km | |
The Ärgera (French: Gérine ) is a small river in the canton of Friborg . The stream is popular with the population as a local recreation area .
course
The sources of the Ärgera are in the Plasselbschlund . The Höllbach is an important tributary. The Ärgera flows through the Senseoberland . After about 20 km the Ärgera joins the Saane near Marly .
A danger is the rapidly rising water level during a thunderstorm . During a thunderstorm in the foothills of the Alps , the brook can turn into a torrent within 30 minutes.
The Ärgera near Tentlingen with normal water levels
The annoyance after a thunderstorm
literature
- The Ärgera in Marly - From construction to revitalization , Three River Circular Path, 2007.