When saving the network before running the mesh generator TALWEG, the application performs consistency checks on the network. The errors are of two distinct levels:

• Warning: the inconsistencies found does not prevent the mesh generator and the simulation from running, but the network entered does not match the requirements for using the software in good conditions.
• Error: the inconsistencies found prevents the generation of a mesh by TALWEG.

A click in the "Correction" column opens the window where the error can be fixed.

Main errors

Here are the most frequent error messages :

• Locations should be monotonic within the reach.
• The space step cannot be nil (otherwise a default value 100 m will be chosen).
• Major Section offset must be between min and max offset of Minor or Minor/Medium Sections.
• Distance of first Major Section (in order of increasing offsets) must be null.
• At least two Major Sections.
• Major bed should hold at least two Major Sections with distinct offsets.
• Distance of last Major Section (in order of increasing offsets) can’t be null, or another Major Section should follow with a distance >0.
• Beginning and end abscissas of the reach are similar. Length of Reach can’t be null.
• There is at least one loop in the network.
• Network is splitted.
• There is a loop in the branch.
• Branch is splitted or is not linear.
• Pond elevations at Node must be monotonic.