Another feature of community planning which is coming to receive larger attention is the preservation of unusual geological and scenic features for the use of public. One of the scenic attractions most commonly neglected is the land along waterways. Sometimes the land on one side of a stream is occupied by a road, but in many cases it is private property. If reserved to the public many of these watercourses might be most attractive parkways. In many cases the control of waterways has been necessitated for the maintenance of the purity of the water supply and the advantage of having the adjoining land--usually more or less wooded--available for picnic parties has encouraged the extension of public control of waterways. Several states now have legislation permitting counties or towns to acquire such areas for park purposes, and the Province of Ontario and some other Canadian provinces require that a width of 66 feet be reserved around all lakes and rivers. In order to utilize the waste land of the watersheds and to protect the shores of reservoirs and streams which furnish public water supplies, many cities have reforested considerable areas, which will be maintained as public forests and will be cut as the timber becomes merchantable. This movement has called attention to the practicability of establishing town or community forests on cheap land unsuitable for tillage, as a source of income to the community. Communal forests have existed in Europe for many centuries, and at the present time form 22 percent of the forests in France. A movement has now commenced for the planting of town forests in this country,[91] and the better utilization of the community's waste land by planting it in timber should be considered a feature of community planning.