1 of 48

Hydrologic Response Units

If regular HRUs are used in a SWAT+ setup, there is one main file, hru-data.hru, which references several other files specifying the HRU properties. The properties of HRU-lte objects are defined in hru-lte.hru.

hru-data.hru

This file contains pointers to several files that specify the HRU properties.

Field

Description

Type

ID of the HRU

integer

Name the of HRU

string

id (hru-data.hru)

Unique ID of the HRU

The ID of the HRU is a primary key referenced by hru in hru.con. All IDs in the hru-data.hru file must be unique.

name (hru-data.hru)

Name of the HRU

The SWAT+ Editor assigns a name to every object, which is typically the abbreviation of the object type followed by the object number in QSWAT+. However, the name of the HRU is not used by SWAT+, so the user may change it.

topo

Pointer to the topography file

The pointer to the topography file is a foreign key referencing name in topography.hyd.

hydro

Pointer to the hydrology file

The pointer to the hydrology file is a foreign key referencing name in hydrology.hyd.

soil

Pointer to the soil file

The pointer to the soil file is a foreign key referencing name in soils.sol.

lu_mgt

Pointer to the land use and management file

The pointer to the land use and management file is a foreign key referencing name in landuse.lum.

soil_plant_init

Pointer to the soil and plant initialization file

The pointer to the soil and plant initialization file is a foreign key referencing name in soil_plant.ini.

surf_stor

Pointer to the wetland file

The pointer to the wetland file is a foreign key referencing name in wetland.wet.

snow

Pointer to the snow file

The pointer to the snow file is a foreign key referencing in .

field

Pointer to the field file

The pointer to the field file is a foreign key referencing in .

hru-lte.hru

Field

Description

Type

Unit

Default

Range

ID of the HRU-lte

integer

n/a

id (hru-lte.hru)

ID of the HRU-lte

The ID of the HRU-lte is a primary key referenced by hlt in hru-lte.con. All IDs in the hru-lte.hru file must be unique.

name (hru-lte.hru)

Name of HRU-lte

area

HRU-lte drainage area

cn2

Condition II Curve Number

cn3_swf

Soil water factor for CN3

0 = field capacity

1 = saturation

t_conc

Time of concentration

perco_co

Soil percolation coefficient

slp

Land surface slope

Hydrologic Response Units

hru-data.hru

id (hru-data.hru)

name (hru-data.hru)

topo

hydro

soil

lu_mgt

soil_plant_init

surf_stor

snow

field

hru-lte.hru

id (hru-lte.hru)

name (hru-lte.hru)

area

cn2

cn3_swf

t_conc

perco_co

slp

hru-data.hru

id (hru-data.hru)

hydro

name (hru-data.hru)

Hydrologic Response Units

surf_stor

soil

topo

soil_plant_init

lu_mgt

hru-lte.hru

id (hru-lte.hru)

area

cn3_swf

cn2

t_conc

name (hru-lte.hru)

perco_co

snow

field

slp

slp_len

et_co

soil_dp

aqu_init

revap

sw_init

aqu_sp_yld

alpha_bf

rchg_dp

soil_text

lat

aqu_dp_flo

snow_h2o

trop_flag

stress

grow_end

aqu_sh_flo

grow_start

plnt_typ

irr_src

pet_flag

usle_c

usle_k

usle_p

irr_flag

t_drain

usle_ls