ICatchmentTimeAreaData Interface

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

Flag specifying if it is allowed or not to advance the time during dry period. Default: true, default true from MU, default false from M11

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.

Concentration time used to defined the number of cells of this catchment. Unit: [s]

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 is a factor which defines the part of the catchment considered to contribute to the runoff. Unit: [-]

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]

The Time Area method to be used.

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

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

Time Area curve coefficient, used by TA function

Time area curve, user defined, must be specified in case TimeAreaCurveType is UserDefined.

The curve is dimensionless, time (X) values between 0 and 1 and area (Y) values between 0 and 1.

Time area curve type.

If set to UserDefined, the actual curve must be specified in the TimeAreaCurve table. All other values indicate predefined curves.

Time step used during the simulation by the catchment model

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.