Note
It is not necessary to load the Spatial Analyst, Utility Network Analyst, or Editor tools because Arc
Hydro Tools will automatically use their functionality on as needed basis. These toolbars need to be
loaded though if you want to use any general functionality that they provide (such as general editing
functionality or network tracing).
However, the Spatial Analyst Extension needs to be activated, by clicking Customize>Extensions…,
and checking the box next to Spatial Analyst.
The Arc Hydro toolbox is also installed by the setup. Refer to the document Arc Hydro GP Tools 2.0 –
Tutorial.pdf for more information on the geoprocessing tools available with Arc Hydro.