1. Lake Geneva (Switzerland/France)
2. Lake Constance (Austria/Germany/Switzerland)
3. Lake Balaton (Hungary)
4. Lake Como (Italy)
5. Lake Maggiore (Italy/Switzerland)
6. Lake Garda (Italy)
7. Lough Neagh (Northern Ireland)
8. Loch Lomond (Scotland)
9. Lake Windermere (England)
10. Lake Vänern (Sweden)