Restoration of river channel morphology at the Nagata Area in the Tama River. Ecol. Civil Eng. 5(2), 233-240, 2003

The Keihin River Works Office, the Tama River Ecological Research Group and citizen groups have planed an interesting river restoration project at the Nagata Area in the Tama River. Although the big gravel bar was seen 20 years ago in the Tama River, it is covered with the forest today. Some specific species depending on gravel bars have been endangered. Therefore, restoration project started in the Tama River in 2001. Some woods were cut, a part of riverbed was excavated and gravel bar was restored. Now, it is under verification about its effect. The argument piled up repeatedly about the restoration method. Here, the process of the argument and restoration methods are described and discussed.