To ensure a smooth experience with Arc Hydro Tools on ArcGIS 10.7:

Arc Hydro is available for both ArcMap and ArcGIS Pro, but there are differences:

Once installed, the tools do not appear automatically. You must manually activate the toolbar and extension framework inside ArcMap.

Before downloading and installing Arc Hydro Tools, make sure you have the following:

Once properly installed, your toolbar unlocks several operational menus designed for end-to-end drainage analysis: Menu Categorization Tool Name Examples Primary Engineering Output DEM Reconditioning, Fill Sinks, Flow Direction

Look for the Arc Hydro for ArcMap section.