User Choices¶
pywatemsedem¶
Options: holding general options coupled to the general data processing and model run.
Erosion control measure options (ECM options): holding options related to erosion control measures.
Variables: holding values for model variables and parameters.
Output: holding options for the WaTEM/SEDEM model output.
Standard values for the first four sets are given in the last section of this page, listed per model resolution.
Note
It is important to note that a number of the pywatemsedem options hold functionalities that are inherited from the WaTEM/SEDEM model (see model parameters in WaTEM/SEDEM documentation page). As such many of these options hold the same key, but another functionality. If the functionality of the option is different for the WaTEM/SEDEM model, then this is indicated in the text (indicated with For functionality in WaTEM/SEDEM, see ..). If the functionality is the same, then a link to the documentation of WaTEM/SEDEM is presented (indicated with see ..).
Options¶
UserProvidedKTC¶
This option indicates whether a User provided kTC value is used, and whether WaTEM/SEDEM needs to generate a kTC value by itself. Typically, this option is set to 1 when a WaTEM/SEDEM simulation for scenario analysis is done - in this case, a kTC map will be generated by the pywatemsedem engine - and is set to 0 when a WaTEM/SEDEM calibration is done - in this case, kTC maps are generated by the WaTEM/SEDEM engine.
Include sewers¶
For functionality in WaTEM/SEDEM pascal, see here
UseTillage¶
For functionality in WaTEM/SEDEM pascal, see here
CreateKtc¶
For functionality in WaTEM/SEDEM pascal, see here
Create ktil map¶
For functionality in WaTEM/SEDEM pascal, see here
Estimate clay content¶
For functionality in WaTEM/SEDEM pascal, see here
Manual outlet selection¶
For functionality in WaTEM/SEDEM pascal, see here
Calibrate¶
For functionality in WaTEM/SEDEM pascal, see here
Convert output¶
For functionality in WaTEM/SEDEM pascal, see here
L model¶
For functionality in WaTEM/SEDEM pascal, see here
S model¶
For functionality in WaTEM/SEDEM pascal, see here
Adjusted Slope¶
For functionality in WaTEM/SEDEM pascal, see here
Buffer reduce area¶
For functionality in WaTEM/SEDEM pascal, see here
Force Routing¶
This options allows to use user-defined routing. This functions is useful for situations where it is known from expert knowledge that the general flow pattern is incorrect.
For functionality in WaTEM/SEDEM pascal, see here
FilterDTM¶
Filter the digital elevation model with a 3x3 average filter which takes into account the parcel boundaries (i.e. only averaging within parcel boundaries).
River Routing¶
For functionality in WaTEM/SEDEM pascal, see here
BankGrassStrips¶
This option defines gras bank strips at the side of the river for every river-adjancent agricultural parcel (with the land cover equal to agriculture).
Calculate Tillage Erosion¶
For functionality in WaTEM/SEDEM pascal, see here
ECM options¶
Include buffers (WaTEM/SEDEM)¶
Load and translate buffer shapefiles to WaTEM/SEDEM buffer rasters. Consider buffers for WaTEM/SEDEM model simulation. For functionality in WaTEM/SEDEM pascal, see here
UseGras (pywatemsedem)¶
Load and translate grass strips shapefiles to WaTEM/SEDEM grass rasters. Grass strips are considered in WaTEM/SEDEM via the WaTEM/SEDEM parcel raster (see here).
Include dams (WaTEM/SEDEM)¶
Load and translate buffer shapefiles to WaTEM/SEDEM grass rasters. Consider grass for WaTEM/SEDEM model simulation. For functionality in WaTEM/SEDEM pascal, see here
Include ditches (WaTEM/SEDEM)¶
For functionality in WaTEM/SEDEM pascal, see here
UseTeelttechn (pywatemsedem)¶
Make use of crop-technical measures. These are defined at the level of parcel polygons, and reduce the C-factor.
Variables¶
Bulk density¶
See here:
ktc low¶
See here
ktc high¶
See here
ktc limit¶
See here
ktil default¶
See here
ktil threshold¶
See here
Parcel connectivity cropland¶
See here
Parcel connectivity forest¶
See here
Parcel trapping efficiency cropland¶
See here
Parcel trapping efficiency forest¶
See here
Parcel trapping efficiency pasture¶
See here
Clay content parent material¶
See here
R factor¶
See here
Alpha¶
See here
Beta¶
See here
Stream velocity¶
See here
Final timestep output¶
See here
begin_jaar¶
(begin) Year of simulation (in development).
begin_maand¶
(begin) Month of simulation (in development).
Max kernel¶
See here
Max kernel river¶
See here
SewerInletEff¶
Used to define efficiency inlet, mapped to raster. For functionality of sewer raster in WaTEM/SEDEM pascal, see here
Sewer exit¶
Only CN. For functionality in WaTEM/SEDEM pascal, see here
LS correction¶
For functionality in WaTEM/SEDEM pascal, see here
Output¶
The output options below are all inherited by WaTEM/SEDEM. This implies that the keys and functionalities of these options in pywatemsedem and WaTEM/SEDEM are exactly the same. For an explanation of these functionalities, we refer to the WaTEM/SEDEM documentation page
Write aspect¶
See here
Write LS factor¶
See here
Write RUSLE¶
See here
Write sediment export¶
See here
Write slope¶
See here
Write total runoff¶
See here
Write upstream area¶
See here
Write water erosion¶
See here
Output per river segment¶
See here
Write rainfall excess¶
See here
Write routing table¶
see here
Maximize grass strips (maximize_grass_strips)¶
The option (boolean) enable the maximisation of for grass strips in the WaTEM/SEDEM
parcels raster. In essence, with this option, the
pywatemsedem.core.grasstrips.expand_grass_strips_with_triggers()-function is
used. This function aims to expand or maximize grass strips within the
boundaries of a parcel, so to avoid that grass strips are removed by
overlap with river and infrastructure pixels (note that river and
infrastructure pixels have a higher priority in the hierarchy of the WaTEM/SEDEM
perceelskaart). This algorithm loops with a 3x3-window over a grass strip
raster, and checks if any of the pixels in the 3x3-window are located next
to a trigger pixel. If this is the case, the considered pixel in the window
is also considered to be a grass pixel. Note that in essence this algorithm is
used as a solution to a resolution issue: because of the higher priority of
infrastructure and rivers in pywatemsedem, grass strips ‘disappear’ at a resolution
of 20 m.