This specification applies to the maintenance of Class I to VII waterways of natural rivers, lakes, reservoirs, channelized rivers and artificial canals. The maintenance of national border rivers and waterways below level VII can be implemented by reference.
JTJ 287-2005 history
2005JTJ 287-2005 Technical Code of Inland Waterway Maintenance
1994JTJ 287-1994 Technical Code of Inland Waterway Maintenance