Swimmers are being strongly discouraged from taking a dip in the Rhone until further notice.
The river has an exceptionally strong flow at the moment and water levels are very high.
Cantonal authorities say the dams at Seujet and Verbois are currently fully open to bring down the levels in the lake – which is 15 cm higher than the maximum allowed.
Experts say this is creating very dangerous conditions and unpredictable currents.
Search for missing man in Rhône
Emergency services are searching the Rhône in Geneva tonight for a young man who failed to resurface after jumping into the river with three friends.
Geneva worst for traffic
Geneva is now the most congested city in the country, with Lausanne in third place.
Geneva's cross-border compensation payment to France reaches record CHF 411m
Geneva will transfer a record CHF 411 million to France this year under the Financial Compensation scheme, up from CHF 396 million last year.
Crans-Montana bar accountant facing criminal allegations
The investigation into the deadly Crans-Montana bar fire has taken a sharp new turn.
Geneva tops list for cocaine use
Cocaine use in Switzerland continues to rise, according to a new study by Addiction Switzerland.
Bol d'Or rocked by controversy
Controversy has overshadowed the 87th Bol d'Or sailing competition this weekend.
