Routing reaches are elements that establish the connectivity of the reservoir network schematic. By adding a routing reach between two junctions, you can connect the reservoir network so that water will transverse through the routing reach from upstream to downstream.

Drawing Routing Reaches

Routing Reaches are drawn from upstream to downstream. You connect two adjacent junctions (typically, computation points added to the network's Configuration in the Watershed Setup Module) by drawing a routing reach.

To draw routing reaches:

  • Select the Reach Tool .
  • Point to the upstream junction at the upstream end of the reach.
  • Hold down the Ctrl key and click on the junction to start the upstream end of the reach.
  • Release the Ctrl key and move the mouse pointer along the stream alignment, then click on the downstream junction.

Routing reaches automatically conform to the stream alignment. You can connect routing reaches to existing junctions; otherwise, if you begin and/or end a reach elsewhere on the stream alignment, ResSim will create new junctions at both/either end of the reach.

ResSim will automatically constrain a new reach between existing junctions (e.g., will not allow a reach to be drawn past an existing junction). If the reach appears to draw past a junction, then the junction is not on the stream you think it's on. This can occur if the computation point (that the junction is based on) is not initially placed on the appropriate stream. To solve this situation, go back to the Watershed Setup Module and revise the location of the computation point (you may need to delete and recreate the computation point to be on the appropriate stream). After saving your watershed configuration, change to the Reservoir Network Module and select Update Network from Configuration from the Network menu. See "Updating a Network from its Configuration" for additional information for updating networks.

Additionally, you may not connect tributaries to the middle of a reach; tributaries must connect to a junction.

Renaming Routing Reaches

ResSim automatically names routing reaches according to the names of the upstream and downstream junctions. To rename a reach component:

  • Using the Reach Tool , right-click on the routing reach to be renamed.

  • Select Rename from the context menu. The Rename Reach dialog will appear ("Figure: Rename Reach"), allowing you to type in a new name.

    Figure: Rename Reach


The new name will now appear as a label in the map display.

Deleting Routing Reaches

To delete routing reaches:

  • Using the Reach Tool , right-click on the routing reach to be deleted.
  • Select Delete from the context menu. A Confirm Delete dialog will appear.
  • Click Yes if you are sure about the deletion.

The deleted routing reach will no longer appear in the map display.