Estuary , though a popular place , due to the lack of management , has degraded . Several erosions has occurred , weeds are numerous among the vegetation , and wildlife have been frequently disturbed . Restoration of these rivers considers several , yet not too costly stages . The first stage of the Greenough River Restoration Project cost approximately 11 ,000 while the second stage of the Greenough River Restoration Project needed a Trust Funding . The Chapman River Foreshore Restoration Project at the Nanson Hamlet in Chapman Valley...











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