although a bridge in the causeway permits water flow and navigation. The lake retention time is an average of 8.2 years; that of the northern basin (11.9 years) is considerably higher than the southern one (2.3 years).

Places on the lake in Switzerland (CH) and in Italy (I) include (from Lugano, clockwise):

*Lugano (CH)
*Cassarate (CH)
*Castagnola (CH)
*Gandria

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