The Arc Hydro Toolset is a suite of tools which facilitate the creation, manipulation, and display of Arc Hydro features and objects within the ArcMap environment. The tools provide raster, vector, and time series functionality, and many of them populate the attributes of Arc Hydro features.
In addition to full compatibility with the software version 10.0, the new version of the Arc Hydro tools are also now fully available in the geoprocessing environment.
Download for 32 bit
Download for x64
ArcHydro ArcGIS 10.3.x
ArcHydro ArcGIS 10.2.x
ArcHydro ArcGIS 10.1.x
ArcHydro ArcGIS 10.0
ArcHydro ArcGIS 9.3
You can also download some tutorials
Book 2 : Arc Hydro Tools 2.0 - Tutorial.pdf
Others books you can download theme for mor information
AHCFG2 Local Parameters Configuration.pdf AHCFG3 Global Delineation with EDNA Data.pdf AHOV1 Arc Hydro Tools - Overview.pdf AHOV2 Arc Hydro Project Development Best Practices.pdf AHPCS1 QC for Preprocessing Vector Data.pdf Overview of Arc Hydro terrain preprocessing workflows.pdf Setting up an Arc Hydro based geoprocessing service_102.pdf
Source : geojamal.com Jamal Chaaouan GIS & Remote sensing website