CatchmentKinematicWave Properties

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

When raining, if true the evaporation is applied at the beginning of the time step, correcting the net rain (in wet periods).

If false, evaporation is applied at the end of the time step on non-empty storages in the catchment.

In dry periods, this is not used. if EvaporationFromTimeSeries is disabled, this is also not used (since the InitialLossRecoveryRate is only applied in dry periods).

Historically MIKE has set this to true and MIKE URBAN to false.

Total area of catchment Type: Catchment area Unit: [m2] Default: 1e8 (100 km2)

Full area of catchment Type: Catchment area Unit: [km2] Default: 100

Evaporation boundary

Rainfall boundary source

Get and set the list of coordinates of the catchment

A overall data interface for cathcment data, containing data properties that are common for all catchments.

This interface contains data and parameters for setting up a catchment model, and represents as such only setup data. Computational variables and methods are not included in this interface. It can be used to explore data and parameters required when setting up the catchment model.

Get and set the central point of the catchment

A set of check points in time that must be hit by the catchments.

Current time of catchment

Effective area. The effective area is the area that collects water. Can be smaller than total area, eg for Linear Reservoir or when LIDs are present.

Time step used in the simulation, it may change. It is set initially in Prepare to TimeStep, and can be updated by individual catchment models when required, i.e. it may differ from TimeStep.

Return the end time of the catchment simulation. This is set during prepare, and the catchment must make sure not to run beyond this time.

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

Flag indicating if the length-width ratio should be fixed.

When fixed, the length and width for each sub-catchment are calculated so that the length/width ratio for each sub-area is kept equal to the length/width ratio of the entire catchment.

When not set, the length of each subcatchment equals the length of the entire catchment, and width of each subcatchment is calculated as the area fraction of the width of the entire catchment.

This is only applicable when the catchment does not specify their length explicitly, see Length.

Default: true

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. Unit: [m] Default: 1e-6

True if infiltration shall occur also after rain Default: True

Maximum value of InitialLossStorageDepth 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.

Unit: [m/s] Default: 0.00005 [m/hour] = 1.2 [mm/day]

Initial loss storage depth.

State variable (not for all derived catchment models)

Unit: [m]

True if the Integrated Horton method is used in the calculation for infiltration. Default: False

Getter returning data that vary with each surface type.

The length of the channel.

The model assumes a prismatic flow channel with rectangular cross section. The channel bottom width is computed from catchment area and length.

This is only applicable when the catchment does not specify their length explicitly, see Length.

Default: 10 m Unit: [m]

Load per inhabitant. Unit: [-]

Low flow limit for switching to dry period time step. The dry period time step will only be applied when the runoff from the rainfall is below the limit. Unit: [m3/s] Default: 0.0001

Maximum runoff flow

Minimum runoff flow

Minimum time the catchment should be able to provide values. The catchment will cache or recalculate values from MinTime to EndTime. MinTime must be updated ("dragged behind" time of calculation) from the caller to allow the catchment to discard cached values.

A overall data interface for cathcment data, containing data properties that are common for all catchments.

This interface contains data and parameters for setting up a catchment model, and represents as such only setup data. Computational variables and methods are not included in this interface. It can be used to explore data and parameters required when setting up the catchment model.

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: [-]

Total runoff from catchment at present time step. Unit: [m^3/s]

Get the Diagnostics instance for a Catchment. Used during runtime.

Average slope of the catchment Default: 1 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]

Snow storage

State variable

Only applicable when UseSnowModule is set.

Unit: [m]

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

List of Lids

List of surfaces

Time of minimum runoff flow

Time of maximum runoff flow

Time step used by the catchment model

Time step used during dry period Default: 12 hours

Time step used during dry period Unit: [s] Default: 12 hours

Total volume of additional inflow

Total infiltration into this catchment (integrated over time)

Total rainfall on this catchment (integrated over time)

Total runoff from this catchment (integrated over time)

Set the TSBuffer to use in this catchment

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.

Volume of water added to catchment after a time step. This water will be eventually routed.

Return dictionary of runoff as a function of year

Dictionary of statistics as a function of year