The Keelung River, which flows swiftly and carries with it a great deal of silt, has formed "new land" along its lower and middle reaches.
基隆河由台北縣平溪鄉山區發源，到關渡匯入淡水河，河流短、落差大、水流急、沖刷力強，長久以來已在中、下游沖刷形成許多灣道，減緩了水的流速，也淤積出許多「新生地」。