The wetlands at the estuary of Pinios River, are located in the eastern part of Thessaly and 1km north-west from Stomio village. It covers a total area of 2600 hectares and belongs exclusively to the State. Its flora includes over 600 types of plants. In some sections of the wetland’s perimeter, there are crops and thickets of evergreen broad-leaved plants.
The estuary of Pinios has riverine and coastal forests, scrublands and dunes. Breeding species include the little bittern, the night heron, the black stork, the white stork, the honey buzzard, the Egyptian vulture, the griffon vulture, the short-toed eagle, the lesser spotted eagle, the golden eagle, the booted eagle, the lanner, the peregrine, the rock partridge, the stone curlew, the eagle owl, the kingfisher and the semi-collared flycatcher. Other species inhabiting the area are the lammergeier, the black vulture, the osprey and Eleonora’s falcon.
Aside of water supply provisions to arable farmland and rich variations in landscape, the estuary is also a natural reserve of rare bird species, included in the European Natura 2000 Network.