Parameters lateral concepts

Kinematic wave

Surface flow

The Table below shows the parameters (fields) of struct SurfaceFlowRiver used for river flow, including a description of these parameters, the unit, and default value if applicable. The parameters in bold represent model parameters that can be set through static input data (netCDF), and can be listed in the TOML configuration file under [input.lateral.river] to map the internal model parameter to the external netCDF variable. The input parameter slope (listed under [input.lateral.river]) is not equal to the internal model parameter sl, and is listed in the Table below between parentheses.

The Table below shows the parameters (fields) of struct SurfaceFlowLand used for overland flow, including a description of these parameters, the unit, and default value if applicable. The parameters in bold represent model parameters that can be set through static input data (netCDF), and can be listed in the TOML configuration file under [input.lateral.land] to map the internal model parameter to the external netCDF variable. The input parameter slope (listed under [input.lateral.land]) is not equal to the internal model parameter sl, and is listed in the Table below between parentheses.

Reservoirs

The Table below shows the parameters (fields) of struct SimpleReservoir, including a description of these parameters, the unit, and default value if applicable. The parameters in bold represent model parameters that can be set through static input data (netCDF), and can be listed in the TOML configuration file under [input.lateral.river.reservoir], to map the internal model parameter to the external netCDF variable.

Two parameters reservoir coverage areas and the outlet of reservoirs (unique id) locs that are not part of the SimpleReservoir struct are also required, and can be set as follows through the TOML file:

[input.lateral.river.reservoir]
areas = "wflow_reservoirareas"
locs = "wflow_reservoirlocs"

Lakes

The Table below shows the parameters (fields) of struct Lake, including a description of these parameters, the unit, and default value if applicable. The parameters in bold represent model parameters that can be set through static input data (netCDF), and can be listed in the TOML configuration file under [input.lateral.river.lake], to map the internal model parameter to the external netCDF variable.

Two parameters lake coverage areas and the outlet of lakes (unique id) locs that are not part of the Lake struct are also required, and can be set as follows through the TOML file:

[input.lateral.river.lake]
areas = "wflow_lakeareas"
locs = "wflow_lakelocs"

The input parameter linkedlakelocs (listed under [input.lateral.river.lake]) is not equal to the internal model parameter lowerlake_ind, and is listed in the Table below between parentheses.

Lateral subsurface flow

The Table below shows the parameters (fields) of struct LateralSSF, including a description of these parameters, the unit, and default value if applicable. The parameters in bold represent model parameters that can be set through static input data (netCDF). The soil related parameters f, soilthickness, z_exp, theta_s and theta_r are derived from the vertical SBM concept (including unit conversion for f, z_exp and soilthickness), and can be listed in the TOML configuration file under [input.vertical], to map the internal model parameter to the external netCDF variable. The internal slope model parameter slope is set through the TOML file as follows:

[input.lateral.land]
slope = "Slope"

The parameter kh_0 is computed by multiplying the vertical hydraulic conductivity at the soil surface kv_0 (including unit conversion) of the vertical SBM concept with the internal parameter khfrac [-] (default value of 1.0). The internal model parameter khfrac is set through the TOML file as follows:

[input.lateral.subsurface]
ksathorfrac = "KsatHorFrac"

The khfrac parameter compensates for anisotropy, small scale kv_0 measurements (soil core) that do not represent larger scale hydraulic conductivity, and smaller flow length scales (hillslope) in reality, not represented by the model resolution.

For the vertical SBM concept different vertical hydraulic conductivity depth profiles are possible, and these also determine which LateralSSF parameters are used including the input requirements for the computation of lateral subsurface flow. For the exponential profile the model parameters kh_0 and f are used. For the exponential_constant profile kh_0 and f are used, and z_exp is required as part of [input.vertical]. For the layered profile, SBM model parameter kv is used, and for the layered_exponential profile kv is used and z_exp is required as part of [input.vertical].

Local inertial

River flow

The Table below shows the parameters (fields) of struct ShallowWaterRiver, including a description of these parameters, the unit, and default value if applicable. The parameters in bold represent model parameters that can be set through static input data (netCDF), and can be listed in the TOML configuration file under [input.lateral.river], to map the internal model parameter to the external netCDF variable. The parameter river bed elevation zb is based on the bankfull elevation and depth input data:

[input.lateral.river]
bankfull_elevation = "RiverZ"
bankfull_depth = "RiverDepth"

When floodplain routing (parameter floodplain) is included as part of local inertial river flow, parameter q_av represents the total average discharge of the river channel and floodplain routing, and parameter q_channel_av represents average river channel discharge. Otherwise parameters q_av and q_channel_av represent both average river channel discharge (are equal).

The input parameter n (listed under [input.lateral.river]) is not equal to the internal model parameter mannings_n, and is listed in the Table below between parentheses.

1D floodplain

The Table below shows the parameters (fields) of struct FloodPlain (part of struct ShallowWaterRiver), including a description of these parameters, the unit, and default value if applicable. The parameters in bold represent model parameters that can be set through static input data (netCDF), and can be listed in the TOML configuration file under [input.lateral.river.floodplain], to map the internal model parameter to the external netCDF variable. The input parameter n (listed under [input.lateral.river.floodplain]) is not equal to the internal model parameter mannings_n, and is listed in the Table below between parentheses.

The floodplain profile FloodPlainProfile contains the following parameters:

The floodplain volumes (per flood depth interval) can be set as follows through the TOML file:

[input.lateral.river.floodplain]
volume = "floodplain_volume"

The input parameter flood_depth (dimension of floodplain volume) is not equal to the internal model parameter depth, and is listed in the Table below between parentheses.

Overland flow

The Table below shows the parameters (fields) of struct ShallowWaterLand, including a description of these parameters, the unit, and default value if applicable. The parameters in bold represent model parameters that can be set through static input data (netCDF), and can be listed in the TOML configuration file under [input.lateral.land], to map the internal model parameter to the external netCDF variable.

The mannings roughness (for the computation of mannings_n_sq) should be provided as follows in the TOML file:

[input.lateral.land]
n = "n_land" # mannings roughness

The input parameter elevation (listed under [input.lateral.land]) is not equal to the internal model parameter z, and is listed in the Table below between parentheses.

Water allocation river

The Table below shows the parameters (fields) of struct AllocationRiver, used when water demand and allocation is computed (optional), including a description of these parameters, the unit, and default value if applicable.

Groundwater flow

Confined aquifer

The Table below shows the parameters (fields) of struct ConfinedAquifer, including a description of these parameters, the unit, and default value if applicable. Struct ConfinedAquifer is not (yet) part of a wflow model.

Unconfined aquifer

The Table below shows the parameters (fields) of struct UnconfinedAquifer, including a description of these parameters, the unit, and default value if applicable. The parameters in bold represent model parameters that can be set through static input data (netCDF), and can be listed in the TOML configuration file under [input.lateral.subsurface], to map the internal model parameter to the external netCDF variable. For some input parameters the parameter listed under [input.lateral.subsurface] is not equal to the internal model parameter, these are listed in the Table below between parentheses after the internal model parameter. The top parameter is provided by the external parameter altitude as part of the static input data and set as follows through the TOML file:

[input]
# these are not directly part of the model
altitude = "wflow_dem"

The input parameter conductivity (listed under [input.lateral.subsurface]) is not equal to the internal model parameter kh_0, and is listed in the Table below between parentheses.

Constant Head

The Table below shows the parameters (fields) of struct ConstantHead, including a description of these parameters, the unit, and default value if applicable. The parameters in bold represent model parameters that can be set through static input data (netCDF), and can be listed in the TOML configuration file under [input.lateral.subsurface], to map the internal model parameter to the external netCDF variable. The input parameter constant_head (listed under [input.lateral.subsurface]) is not equal to the internal model parameter head, and is listed in the Table below between parentheses.

Boundary conditions

River

The Table below shows the parameters (fields) of struct River, including a description of these parameters, the unit, and default value if applicable. The parameters in bold represent model parameters that can be set through static input data (netCDF), and can be listed in the TOML configuration file under [input.lateral.subsurface], to map the internal model parameter to the external netCDF variable. The input parameter river_bottom (listed under [input.lateral.subsurface]) is not equal to the internal model parameter bottom, and is listed in the Table below between parentheses.

Drainage

The Table below shows the parameters (fields) of struct Drainage, including a description of these parameters, the unit, and default value if applicable. The parameters in bold represent model parameters that can be set through static input data (netCDF), and can be listed in the TOML configuration file under [input.lateral.subsurface], to map the internal model parameter to the external netCDF variable. For some input parameters the parameter listed under [input.lateral.subsurface] is not equal to the internal model parameter, these are listed in the Table below between parentheses after the internal model parameter.

Recharge

The Table below shows the parameters (fields) of struct Recharge, including a description of these parameters, the unit, and default value if applicable.

Head boundary

The Table below shows the parameters (fields) of struct HeadBoundary, including a description of these parameters, the unit, and default value if applicable.

Well boundary

The Table below shows the parameters (fields) of struct Well, including a description of these parameters, the unit, and default value if applicable.

Sediment

Overland flow

The Table below shows the parameters (fields) of struct OverlandFlowSediment, including a description of these parameters, the unit, and default value if applicable.

River flow

The Table below shows external parameters that can be set through static input data (netCDF), and can be listed in the TOML configuration file under [input.lateral.river]. These external parameters are not part of struct RiverSediment, but used to calculate parameters of struct RiverSediment.

The Table below shows the parameters (fields) of struct RiverSediment, including a description of these parameters, the unit, and default value if applicable. The parameters in bold represent model parameters that can be set through static and forcing input data (netCDF), and can be listed in the TOML configuration file under [input.lateral.river], to map the internal model parameter to the external netCDF variable. For some input parameters the parameter listed under [input.lateral.river] is not equal to the internal model parameter, these are listed in the Table below between parentheses after the internal model parameter. For example, internal model parameter sl is mapped as follows in the TOML file to the external netCDF variable RiverSlope:

[input.vertical]
slope = "RiverSlope"