Hydro Network
The heart of the ArcGIS Hydro Data Model is the Hydro Network. The Hydro Network is made up of the Hydro Edge and Hydro Junctions that represent the river system, and is augmented by Waterbodies and other special features.
Hydro Network Components
Linear Referencing
Building a Hydro Network
Tracing Flow through a Hydro Network
Hydro Network UML Diagram
Click here to view the PDF version of Chapter 3.
Chapter 3 Data
The Hydro Edges are in a class called Edges representing the NHD reaches for the Lower West Fork of the Trinity River. All the point features are in Hydro Points under the classes Monitoring and stuff. The Edge Catchments are in Catchments and link by Grid-code to ObjectID of Hydro Edges.
The geodatabase (in zipped format) can be found in the folder ArcGIS\Chapter3\Chapter3data, along with the DLL file needed in order to run the ArcGIS Hydro Data Model in ArcCatalog or ArcMap. For instructions on how to use the DLL file and deploy the data model, go to the Instructions page.
I have included the DEM (lwf_dem) and the FlowDirection Grid (lwf_fdrgr) and it is in the on the CRWR ftp site at ftp://ftp.crwr.utexas.edu/pub/consortium/LWF.
Chapter 3 Display
The data from Chapter 3 can be viewed as a map document in ArcMap.
The map can be found in the folder ArcGIS\Chapter3Data and viewed in ArcMap.
