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A practical course on analysing heavy rainfall, surface runoff, and flood risks with ArcGIS Pro. Participants examine the relationships between terrain, topography, and water movement and learn how to identify potential flow paths, catchment areas, and vulnerable locations using spatial analysis.
You will learn how to prepare terrain data for hydrological analysis and use essential ArcGIS Pro and Spatial Analyst tools to investigate surface runoff and flood risks. You will calculate flow direction, flow accumulation, and catchment areas, examine potential flooding scenarios, and present the results through informative maps.
Based on these analyses, you will assess vulnerable areas and derive possible measures for reducing risks and improving the resilience of regions, infrastructure, and individual assets.
• Understand the relationships between topography, surface runoff, and flood risks
• Prepare and assess terrain models for hydrological analysis
• Calculate flow directions, flow paths, and flow accumulation
• Identify catchment areas and potential depressions
• Examine and visualise flooding scenarios with ArcGIS Pro
• Identify vulnerable areas, infrastructure, and individual assets
• Prepare analysis results for risk assessments
• Derive suitable measures for risk reduction and improved resilience
• Basic knowledge of ArcGIS Pro
• A fundamental understanding of geospatial data, layers, and spatial analysis
• Knowledge of hydrology, environmental planning, or risk management is helpful but not essential
*We customize the course outline and content to your specific needs and relevant use cases.
Module 1: Heavy Rainfall, Flooding, and Climate Impacts
• Introduction to heavy-rainfall and flooding events
• Differences between river flooding, flash flooding, and urban flooding
• Effects of climate change on the frequency and intensity of extreme rainfall
• Importance of preparedness, risk assessment, and resilience
• Typical applications in planning, public administration, and emergency management
• Capabilities and limitations of GIS-based flood simulations
Module 2: Hydrological Fundamentals for GIS Applications
• The water cycle, rainfall, infiltration, and surface runoff
• Effects of terrain, soil, and land use on water movement
• Catchments, watersheds, and drainage networks
• Depressions, basins, and natural retention areas
• Importance of flow direction and flow accumulation
• Translating hydrological questions into spatial analyses
Module 3: Terrain and Topography Analysis with ArcGIS Pro
• Selecting and preparing suitable digital elevation models
• Assessing resolution, accuracy, and data quality
• Clipping, projecting, and checking terrain data
• Analysing elevation, slope, and aspect
• Using hillshade and other visualisations to interpret terrain
• Identifying depressions and inconsistencies in elevation data
• Preparing terrain models for hydrological calculations
Module 4: Flow Paths and Catchments with Spatial Analyst
• Introduction to hydrological analysis tools in ArcGIS Pro
• Processing sinks and depressions in an elevation model
• Deriving flow direction from elevation data
• Calculating and interpreting flow accumulation
• Identifying potential drainage paths and flow lines
• Defining pour points and watersheds
• Calculating and visualising catchment areas
• Checking results for plausibility and data-quality issues
Module 5: Flooding Scenarios and Risk Areas
• Fundamentals of simplified flood simulations
• Defining rainfall and water-level scenarios
• Examining potential inundation areas and water depths
• Identifying depressions, bottlenecks, and critical flow routes
• Locating vulnerable buildings, transport routes, and infrastructure
• Analysing regional areas and individual assets
• Classifying and mapping risk areas
• Communicating uncertainty and analytical limitations clearly
Module 6: Visualising and Communicating Results
• Applying clear symbology to analysis results
• Combining flow paths, catchments, and inundation areas
• Mapping water depths and risk categories
• Creating overview and detailed maps for different audiences
• Highlighting critical assets and infrastructure
• Preparing maps for reports, presentations, and planning discussions
• Documenting results in a traceable manner
Module 7: Risk Reduction and Resilience Planning
• Understanding technical, planning, and organisational measures
• Examining retention, infiltration, and controlled drainage options
• Assessing possible protection measures for buildings and infrastructure
• Considering green spaces, retention areas, and emergency flow routes
• Deriving measures for regional areas and individual assets
• Using analysis results to prioritise interventions
• Discussing competing objectives and practical feasibility
Module 8: Practical Exercise and Scenario Discussion
• Completing a compact hydrological analysis
• Preparing an elevation model and calculating flow paths
• Identifying catchments and potential inundation areas
• Assessing vulnerable assets and critical locations
• Developing suitable visualisations for the results
• Deriving possible risk-reduction measures
• Discussing real-world scenarios and potential solutions
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