The Lake of Comabbio is a small glacial lake in which lives a great variety of birds and plants.
The Lake of Comabbio is a small glacial lake, which was formed 15,000 years ago following the retreat of the glacier of Lake Maggiore, together with the lakes of Varese, Monate. Its waters do not exceed a depth of 8 meters, while its altitude is 228 m above sea level.
Thanks to to the ban on use boats, a varied aquatic ecosystem is reinforcing and in Mercallo there is a natural swimming pool that fits in perfect harmony with the nature.
On its shores you can see the typical marsh vegetation, made of trees such as alder (Alnus glutinosa) , white willow (Salix Alba) and common oak (Quercus robur ) and then a belt of sedges (Carex ) where there are spondicola (Carex Elata ), aquatic iris (Iris pdseudacorus ) and Purple Loosestrife ( Lythrum salicaria ). An exotic species habitat is the invasive water primrose (Ludwigia Grandiflora) with the large yellow flowers. There is also a belt of reeds with bulrush (Typha latifolia) , club-rush ( Schoenoplectus lacustris ) , the common reed ( Phragmites australis ), and finally , floating on the water, the bands of “lamineti”, that is a vegetable very rich in food for amphibians, fish and birds. In the Lake of Comabbio you to easily see the white water lily (Nymphaea alba) , water chestnut ( Trapa natans ) and ninfoide ( Nymphoides peltata).
The reed has a very important role in preventing the erosion of the banks of the lake , as well as being a place where many animals find shelter and food.
Around the lake runs a bicycle and pedestrian path that connects to the larger one of Lake Varese.