The actions that can be triggered using the lum.dtl file are defined in the SWAT+ code. For each action, the type and ID of the object it is applied to, and a user-defined name have to be specified. Certain actions require additional information, which has to be specified in the fields option, const, const2, and fp. The use of these four fields depends on the action. The table below lists the actions implemented in the SWAT+ code, a short description, and the additional fields needed.
| Action | Description | Additional fields needed |
|---|---|---|
irrigate
Irrigation
irr_demand
fertilize
Fertilizer application
fert_future
manure_demand
till
Tillage
plant
Planting
harvest
Harvest
kill
Kill
harvest_kill
Harvest and kill
rot_reset
Reset to beginning of rotation
pest_apply
Pesticide application
graze
Grazing
grow_init
Initiate growing season for HRU-lte
grow_end
End growing season for HRU-lte
drain_control
Drainage water management
divert
Divert water
res_demand
Demand from a reservoir
flow_control
Flow control for water allocation
tile_control
Tile flow control for saturated buffers
impound_off
Turn off impounded water (paddy or wetland)
impound_on
Turn on impounded water (paddy or wetland)
weir_height
Adjust weir height (paddy)
puddle
hru_fr_update
HRU area fraction change
lu_change
Land use change
p_factor
Update USLE P factor
contour
Contouring
stripcrop
Strip cropping
terrace
Terracing
tile_install
Install tile drainage
septic_install
Install septic tank
fstrip_install
Install filterstrip
grassww_install
Install grass waterway
user_def_bmp
User user-defined BMP reductions
chan_change
burn
Burning
cn_update
Update Curve Number
pheno_reset