Urban riverscapes are facing diverse demands concerning riparian uses, ecological, economic and social functionalities, and aesthetic questions. One of the main challengestoday is the implementation of an integrative perspective on riverscapes to overcome the horizontal frontiers of traditional water management (water governance) and urban planning (land governance). Led by the theoretical framework of planning culture, the article shows the different rationalities and governance approaches from a cultural perspective. Finally, two quite different local planning cultures are outlined to illustrate the cultural variety with which the challenges of sustainable urban riverscapes are managed.Keywords: urban river management; organizational culture; land and water governance; Germany
Focusing on urban riverscapesRivers have always played a crucial role in human activities, e.g. the founding of settlements on riverbanks, the use of temporarily flooded areas for agricultural food production, or their use as strategic barriers of defence. On rivers, goods for trade were transported, the river water was necessary for the development of different techniques of traditional handicraft, and it simultaneously served as a fresh water supply and wastewater disposal. Nowadays, focusing on urban riverscapes includes being confronted by some of these issues (albeit slightly modified), as well as the multiple additional demands on the river water itself (in terms of quality and quantity) and on its riparian land uses and their diverse influences (in terms of the cycle of substances, interdependence between these uses and the river ecosystem, their spatial impact, the consequences of societal changes, etc. (Levin-Keitel, 2014)). Especially in urban areas, where space by the river is limited and numerous diverging interests are articulated, these demands and peculiarities are gaining a controversial dimension.
Multiple policy perspectives and their integrationEven though the city level is neither typical for nor representative of river management in general (such as the scale of international river associations, river basins or regional catchment areas), the questions of integration and integrated implementation occur at the local level, often in a project-based approach. Accordingly, in the last decade urban riverscapes have re-emerged as one of the central issues of European urban planning and development. Due to different driving forces, urban riverscapes come to the fore of diverse stakeholders, demands and functionalities, and the promotion of various laws, directives, programmes and policies. This includes, in particular, European guidelines such as the European Union Water Framework Directive, the current discussion about urban climate change adaptations, and former industrial sites in inner cities being redeveloped. These diverse interests mean that the idea of an integrative perspective represents a significant challenge, which consequently raises considerations about aspects of traditional water management, such as water qu...