The site includes a 60ha water-supply reservoir. Human activities include intense hunting and agriculture. Ramsar site no. 329. Kalmthoutse Heide . Bordering the Netherlands, the site consists of heathland, acidic pools, marshes and woodland, on an extensive complex of stabilized inland dunes, along the Scheldt River estuary.
Vegetation includes dune stabilizing species, various orchid species, dry and wet heath.
Human activity is limited. Ramsar site no. 330. A complex of wet grassland and marshes fringed by reedbeds and fed by rainfall and groundwater. The site supports a varied flora including several notable species, as well as a diversity of breeding birds. Wintering and passage waterbirds include cormorants, swans, geese, ducks, shorebirds and terns.