TUFLOW Message 1033

TUFLOW Message
ERROR 1033 - No XS line data downstream of channel "XXXX". Could not interpolate cross-section properties.

Alternate Message
ERROR 1033 - No XS line data upstream of channel "XXXX". Could not interpolate cross-section properties.

Message Type
ERROR

Description
Cross-Sectional data for the channel named "XXXX" cannot be found.

Suggestions
Each channel requires a table describing its hydraulic properties to define its conveyance. The properties are normally defined by digitising a cross-section in a 1d_xs or 1d_tab layer positioned midway along the channel or at the channel ends. If the cross-section is applied at channel ends, only applicable to open channels, circular and rectangular culverts, the cross-section lines must have a mid-vertex snapped to the channel end. If the cross-section is positioned midway along the channel, applicable to all 1D structures, it must have either:

• Only two vertices crossing the 1D network.
• In case of more than two vertices, one must be snapped onto a 1D network vertex.

The 1d_xs or 1d_tab layer references an external csv file (or similar formatted file) containing either a cross-section profile or a hydraulic properties table. The hydraulic properties can also be externally sourced from a Mike 11 or Flood Modeller. Note that structures such culverts (circular and rectangular only) and weirs, are an exception to the rule. The attribute information supplied within the 1d_nwk table are sufficient to define the hydraulic properties.

Refer to the TUFLOW Manual for more information. For detailed instructions on setting up the 1d_nwk and 1d_tab layers, refer to Module 11 of the Tutorial model.

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