Arc Hydro is a community, data model, set of tools, and workflows to support the GIS side of hydrologic and hydraulic (H&H) analyses. Learn how to apply the Arc Hydro data model while running workflow-driven tools in a watershed modelling application. Starting with a good quality digital elevation model (DEM), you will conduct terrain preprocessing to hydrologically condition the DEM. The next step will involve input into stream drainage network identification, followed by catchment delineation. Within a GIS context, you will differentiate catchments from watersheds and subwatersheds, Finally, you will explore the key components of the Arc Hydro vector data model to see the benefits of the “practical GIS framework for development of integrated analytical systems for water resources”. Understanding the fundamentals of Arc Hydro presented here will enable you to develop your own specific hydro solutions (e.g. watershed characterization for H&H model inputs, floodplain delineation, stream network tracing, etc.) in the future.

This is an introductory workshop for GIS practitioners who are relatively new to water resource management and for H&H practitioners who are recent/current ArcGIS Pro users. There will be a brief review of essential terminology, explanations of geospatial tool concepts, and demonstrations that focus specifically on Arc Hydro in the ArcGIS Pro software application. Attendees have the opportunity to work through hands-on exercises that will be facilitated by access to remote computers with the pre-installed software and data made available during the workshop. All you need is a laptop with reliable internet and a modern web browser.