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A Model-Based Tool for Assessing the Impact of Land Use Change Scenarios on Flood Risk in Small-Scale River Systems—Part 1: Pre-Processing of Scenario Based Flood Characteristics for the Current State of Land Use
 
 
Article

A Model-Based Tool for Assessing the Impact of Land Use Change Scenarios on Flood Risk in Small-Scale River Systems—Part 2: Scenario-Based Flood Characteristics for the Planned State of Land Use

Department of Water Management, University of Rostock, Satower Straße 48, 18059 Rostock, Germany
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Author to whom correspondence should be addressed.
Academic Editor: Evangelos Baltas
Hydrology 2021, 8(3), 130; https://doi.org/10.3390/hydrology8030130
Received: 11 June 2021 / Revised: 16 August 2021 / Accepted: 22 August 2021 / Published: 1 September 2021
(This article belongs to the Special Issue Impacts of Land Use Changes on Hydrological Processes and Modelling)
Land use changes can significantly influence the water balance, and thus especially the development of flood-triggering runoff peaks. Hence, it is advisable to assess possible changes already at the level of municipal planning. Since many different actors are usually involved in spatial planning, it is useful to provide a shared platform where stakeholders can access the same information to analyze and evaluate flood hazards. Therefore, a GIS routine for the prediction of soil sealing induced runoff peaks and resulting potential flooding in the watercourse was developed, which is embedded in a GIS based decision support system (GIS-DSS). The so-called storm water routine (SWR) is founded on preprocessed flood characteristics, calculated by means of hydrological/hydraulic models (described in part 1). The potential impact of land use change is assessed purely in GIS as flow difference which is routed through the river system. To validate this simplified method, a process model was set up with an exemplary land use change and its results were compared with the GIS-based results. For 16 of the 18 rainfall scenarios tested, the SWR provided very good to good agreement with the detailed model. For short and highly dynamic rain events the SWR approach is less reliable. Several supplements like the integration of LID are conceivable. View Full-Text
Keywords: flood risk assessment; soil sealing; land use change; decision support system flood risk assessment; soil sealing; land use change; decision support system
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MDPI and ACS Style

Kachholz, F.; Schilling, J.; Tränckner, J. A Model-Based Tool for Assessing the Impact of Land Use Change Scenarios on Flood Risk in Small-Scale River Systems—Part 2: Scenario-Based Flood Characteristics for the Planned State of Land Use. Hydrology 2021, 8, 130. https://doi.org/10.3390/hydrology8030130

AMA Style

Kachholz F, Schilling J, Tränckner J. A Model-Based Tool for Assessing the Impact of Land Use Change Scenarios on Flood Risk in Small-Scale River Systems—Part 2: Scenario-Based Flood Characteristics for the Planned State of Land Use. Hydrology. 2021; 8(3):130. https://doi.org/10.3390/hydrology8030130

Chicago/Turabian Style

Kachholz, Frauke, Jannik Schilling, and Jens Tränckner. 2021. "A Model-Based Tool for Assessing the Impact of Land Use Change Scenarios on Flood Risk in Small-Scale River Systems—Part 2: Scenario-Based Flood Characteristics for the Planned State of Land Use" Hydrology 8, no. 3: 130. https://doi.org/10.3390/hydrology8030130

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