WMS:Hydrologic Computations

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HY8 Modeling Wizard showing the Hydrologic Computations step.

The Hydrologic Computations step is used to compute hydrologic parameters for the watershed and sub-basins.


  • Compute GIS Attributes – Depending on the model being used, this button brings up a dialog where attributes are computed from the land use and/or soil type data.
  • Travel times – This spreadsheet allows computing the Time of Concentration for all the sub-basins in the watershed using either the basin data or map data method.
  • Edit Parameters – This button brings up the edit parameters dialog for the model where modeling parameters are changed for all the sub-basins in the watershed.