ICatchmentLinearReservoirData Properties

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

Total area of catchment

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.

Effective area (fraction of full area) of the catchement used by the Dutch model Unit: [-]

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

True if evaporation is enabled, and an evaporation boundary has been defined.

If set to false the initial recover rate is used during dry periods. Default: False

Dry depth used for switching Horton's mode between dry and wet in Kinematic Wave model: when InfiltrationAfterRain == true In this case the switching to regeneration of infiltration capacity is controlled by a low limit of the water depth on the surface. (from ini file) Unit: [m] Default: 1e-6

Impervious area for the French model.

For an urban catchment it is also used as a factor which defines the part of the catchment considered to contribute to the runoff.

Unit: [-]

True if the infiltration process is inlcuded. Default: False

True if infiltration shall occur also after rain Default: True

Maximum value of initial loss magasin depth Unit: [m]

Recovery rate for initial loss capacity. The initial loss capacity is regenerated in dry periods by a linear recovery rate.

Used as constant evaporation, when evaporation is not defined explicitly. If evaporation is defined explicitly (see EvaporationFromTimeSeries), this is neglected.

For some catchment models it is only applied under dry conditions.

Unit: [m/s] Default: 0.00005 [m/hour]

Lag time is the reciprocal equivalent of the linear reservoir time constant used in model FR Unit: [s] default: 300

Length of the catchment used in the Lag time calculation if Lagtime is not given by the user. Unit: [m] Default: 10

Model type.

NL model corresponds to C1 FR model corresponds to C2

Catchment model ID. Unique id.

Catchment model ID. Unique id.

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

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

Hydrological reduction coefficient. The runoff reduction factor, accounts for water losses caused by e.g evapo-transpiration, imperfect imperviousness, etc. on the contributing area. Unit: [-]

Slope of the catchment used in the Lag time calculation if Lagtime is not given by the user. Unit: [-] Default: 0.001

Snow melt coefficient. Note: the snow melt coefficient is not in SI unit, because the temperature is assumed to be in degres Celcius. Unit: [m/degCelcius/s]

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

StormWater LIDs connected to catchment

The linear reservoir Time constant used in model NL Unit: [1/s] Default: 3e-3

Time step used during the simulation by the catchment model

Flag defining if the catchment is an urban or a rural catchment. If value is undefined, it is automatically determined.

When automatically determined, a catchment is urban when it is French (FR) and has an ImperviousArea factor larger than or equal to 0.2

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

True if the snow module is activated. If True, a temperature time series has to be provided for the catchment.