Model Usage

The aim of this page is to give a full overview of the possible model choices, inputs and outputs.

It is important to indicate that WaTEM-SEDEM is a raster-based model. The in- and outputs are therefore mainly defined by this raster-format (idrisi). In addition, a number of text-files are used to define additional inputs and model choices. WaTEM/SEDEM in its most simple implementation has a low number of model parameters. However, a number of optional user choices (e.g. to include management processes) or to consider parameters which are by-default fixed as variable will naturally extend this parameter dimensionality. This is why, for a first introduction to the use of WaTEM/SEDEM, one is referred to the tutorial (click here).

All user choices, input, outputs and options are defined in an ini-file. The model reads the ini-file and uses this info to model the catchment according to the user choices. In the following chapters all possible keywords of the ini-file are discussed. As the needed inputs and the generated outputs are largely dependent on the defined model choices, we first explain all possible model choices. The model choices also give an overview of all the possibilities of the model.

• Rasters
  • Format
  • Raster Coordinates
• Model Choices
  • Model options
    • L model
    • S model
    • TC Model
    • Only Routing
    • Calculate tillage erosion
  • Output
    • Saga_Grids
    • write aspect
    • write LS factor
    • write upstream area
    • write slope
    • write routing table
    • write routing column/row
    • write RUSLE
    • write sediment export
    • write water erosion
• Model extensions
  • Create ktil map
  • Create ktc map
  • Calibrate
  • Curve Number
  • Include sewers
  • Include buffers
  • Buffer reduce area
  • Include ditches
  • Include dams
  • Force Routing
  • River Routing
  • Cardinal Routing River
  • Include tillage direction
  • Adjusted Slope
  • Estimate Clay content
  • Output per river segment
  • Manual outlet selection
    • Output
  • write rainfall excess
  • write total runoff
• Model input
  • Folders
    • input directory
    • output directory
  • Files
    • DTM filename
    • Parcel filename
    • P factor map filename
    • K factor filename
    • C factor map filename
    • ktc map filename
    • Outlet map filename
    • ktil map filename
    • Sewer map filename
    • Tillage direction filename
    • Oriented roughness filename
    • Buffer map filename
    • Ditch map filename
    • Dam map filename
    • River segment filename
    • adjectant segments
    • upstream segments
    • river routing filename
    • Routing maps
    • CN map filename
    • Rainfall filename
  • Parameters
    • max kernel
    • max kernel river
    • bulk density
    • R factor
    • Parcel connectivity cropland
    • Parcel connectivity grasstrips
    • Parcel connectivity forest
    • Parcel trapping efficiency cropland
    • Parcel trapping efficiency pasture
    • Parcel trapping efficiency forest
  • Parameters extensions
    • ktc low
    • ktc high
    • ktc limit
    • ktil default
    • ktil threshold
    • LS correction
    • Sewer exit
    • Clay content parent material
    • 5-day antecedent rainfall
    • stream velocity
    • alpha
    • beta
    • Desired timestep for model
    • Final timestep output
    • Endtime model
    • Number of buffers
    • Number of forced routing
  • Bufferdata
  • Forced routing data
  • Calibration data
    • KTcHigh_lower
    • KTcHigh_upper
    • KTcLow_lower
    • KTcLow_upper
    • steps
  • References
• Model output
  • Only Routing output
    • routing.txt
    • routing_missing.txt
    • routing_rowcol.txt
    • LS.rst
    • AspectMap.rst
    • SLOPE.rst
    • UPAREA.rst
  • WaTEM/SEDEM output
    • Total Sediment.txt
    • Total Sediment segments.txt
    • Cumulative sediment segments.txt
    • Clay content sediment.txt
    • Clay content sediment segments.txt
    • cumulative.rst
    • sewer_in.rst
    • SediExport_kg.rst
    • SediOut_kg.rst
    • SediIn_kg.rst
    • WATEREROS (kg per gridcel).rst
    • WATEREROS (mm per gridcel).rst
    • Capacity.rst
    • RUSLE.rst
    • TILEROS (mm per gridcel).rst
    • TILEROS (kg per gridcel).rst
    • SEDTIL_IN.rst
    • SEDTIL_OUT.rst
    • Calibration.txt
  • CN-output
    • Discharge.txt
    • Discharge_segments.txt
    • Sediment concentration.txt
    • Sediment concentration segments.txt
    • Sediment.txt
    • Sediment_segments.txt
    • Spillover per buffer.txt
    • Total discharge.txt
    • Remap.rst
    • Total runoff.rst
• Calibration
  • Theoretical background
  • Practical execution
  • References
• Summary ini-file
  • Overview
  • Conditionally mandatory Dependencies (C)
  • Controlled vocabularies