Urban riverbanks are attractive locations and highly prized recreational environments. The designs of urban river landscapes must fulfill a broad range of requirements: flood control, open space design, and ecology are as a rule the three dominant themes, and they must often be reconciled within a very restricted space. The river must be understood as a process: governed by changing water levels, shifting seasons, erosion, and sedimentation, the river environment is not a sta tic entity but constantly changing-the design must be flexible and take this into account.