The purpose of the Watershed Setup Module is to provide a common framework for defining the features of a watershed for modeling with one or more HEC modeling applications, i.e., to setup a shared schematic. Aspects of this module can be found in HEC-ResSim, HEC-FIA, HEC-WAT, and the CWMS CAVI.
In the Watershed Setup Module, you will create new watersheds, set up your watershed's map display, and specify the physical arrangement of schematic elements that make up your basin. The set of schematic elements includes:
- The Stream Alignment is a representation of the stream centerlines of the river network in your watershed and is the backbone or framework for your schematics.
- Computation Points are locations where time-series information is exchanged between models in an integrated framework. Most Computation Points are placed on the stream alignment and represent gage locations, control points, or other key physically or operationally important locations.
- Projects are, typically man-made, structures that impact the flow of water in a river system. The types of projects that can be included in your schematics include Reservoirs, Levees, Diversions, Channel Modifications, Off-Channel Storage Areas, and Other Projects.
- Impact Areas are geographic regions that may experience economic damages due to high water levels (flooding).
You will also group the projects in your watershed into one or more Configurations. Configurations represent a current or potential arrangement of the watershed schematic elements (e.g., Existing Condition or Without Project).
This section will cover the Watershed Setup Module itself and the user interface features that are unique to this module. It will also cover how to create a watershed, add maps to the watershed, and define watershed configurations. The Stream Alignment and Watershed Schematic Elements will cover creating and editing the stream alignment and drawing schematic elements.