Feature Description

Rivers in a watershed are divided into main streams and tributaries. In hydrology, rivers are classified into different orders based on factors such as flow volume and morphology. The stream order can infer certain characteristics of rivers.

The Stream Order function is used to classify river hierarchies. Based on raster river system and direction raster, it assigns stream order numbers where higher values indicate higher hierarchy levels. Currently, SuperMap provides two stream order methods: Strahler and Shreve. For details, see Stream Order Methods.

Feature Entry

• Spatial Analysis Tab - >Raster Analysis Group -> Hydrology -> Stream Order.
• Toolbox -> Raster Analysis -> Hydrology -> Stream Order.

Parameter Description

• River System Data: Select the datasource and dataset containing the raster river system data.
• Flow Direction Data: Select the datasource and dataset containing flow direction data. For generating flow direction data, refer to Flow Direction.
• Stream Order Method: Choose the stream order method: Strahler method or Shreve method.
• Result Data: Set the datasource and dataset name for saving results.
• Click the Execute button to run the analysis. After execution completes, the output window will indicate whether the result succeeded or failed.