ICatchmentUHMData Properties

Additional constant flow added to the total runoff Unit: [m3/s] Default: 0

Stream Slope used for the Alameda SUH calculations Unit: [-]

Watershed Coefficient is the Basin factor used for the Alameda SUH calculations Unit: [-]

Total area of catchment

Area reduction fator Unit: [-]

Base flow Unit: [m3/s]

Geometry of the catchment. This is a list of coordinates defining a closed polygon as the extent of the catchment.

Catchment name

The name is not unique, there may be several catchment models for one catchment, however all catchments with the same name should/must share the same catchment geometry.

The central point of the catchment. Used for e.g. finding the rain time series closest to this catchment.

Constant loss Unit: [m/s]

Curve number Unit: [-]

End time of catchment simulation - the latest time for which the catchment can return data

User defined hydrograph.

Enabled when HydrographType is UserDefined.

Set to null to use instead the HydrographTsFile and HydrographTsItemNumber

User defined hydrograph time series file.

Enabled when HydrographType is UserDefined and Hydrograph is null.

User defined hydrograph time series filename.

Enabled when HydrographType is UserDefined and Hydrograph is null.

Item to use in HydrographTsFile Note: this index is 1-based

Define the type of hydrograph to be used for this catchment CatchmentUHMHydrographTypes

Initial abstraction depth Unit: [m]

Antecedant Moisture Conditions Unit: [-]

Initial loss Unit: [m]

Lag time Unit: [s]

Curve number used in the lag time calculations Unit: [-]

Lag time calculation type

For the SUH the length represents the length of the main stream from the outlet to the dicide Unit: [m]

Represents the length of main stream from the outlet to a point nearest the watershed centroid. Used in the calculations of the SUH lag time Unit: [-]

Loss model type

Maximum number of cells in hydrograph routing. To disable maximum, set to zero. A sound value is 200-400.

If the maximum is enforced, the advanced routing method will be used. The advanced routing is a higher order advection scheme, AdvectiveTransport.

The advanced routing/advection scheme is computationally somewhat more expensive than the simple routing, so the number of advanced routing cells will be half of MaxNumberOfCells.

Catchment model ID. Unique id.

Catchment model ID. Unique id.

Observed data. Used for creating calibration plots and for auto-calibration reference data.

Peaking coefficient used by SUH standard hydrograph model Unit: [-]

Number of person equivalent in the catchment, used with catchment discharge source boundary

Runoff coefficient used in proportional loss method Unit: [-]

Slope of the catchment Unit: [-]

Start time of catchment simulation - the earliest time for which the catchment can return data

StormWater LIDs connected to catchment

Time step used during the simulation by the catchment model

Flag telling if initial conditions is taken from a hotstart file Default: false

Watershed Coefficient is the Basin factor used for the standard SUH calculations Unit: [-]