Hydrographs

SWAT+ prints two hydrograph output files per time step, one for incoming and one for outgoing hydrographs. The printing of hydrographs is controlled by entering "y" or "n" in the hyd line in print.prt. Hydrographs can be printed at daily, monthly, yearly, and average annual time steps. The names of the hydrograph output files are as follows:

• hydin_day.txt

• hydout_day.txt

• hydin_mon.txt

• hydout_mon.txt

• hydin_yr.txt

• hydout_yr.txt

• hydin_aa.txt

• hydout_aa.txt

The number of lines in the hydrograph output files depends on the number of connections between spatial objects defined in the SWAT+ setup. In the incoming hydrograph files, for each receiving object there will be one line per source object it receives a hydrograph from. The number of lines per source object in the outgoing hydrograph files equals the number of receiving objects it sends hydrographs to.

In

Field	Description	Unit
jday	Julian Day	n/a
mon	Month	n/a
day	Day of the month	n/a
yr	Year	n/a
name	Name of the receiving object	n/a
type	Type of the receiving object
objtyp	Type of the source object
typ_no	ID of the source object
hyd_typ	Type of the incoming hydrograph
fraction	Fraction of the incoming hydrograph
flo	Incoming flow	m3/s
sed	Incoming sediment	tons
orgn	Incoming organic nitrogen	kg
sedp	Incoming sediment phosphorus	kg
no3	Incoming nitrate nitrogen	kg
solp	Incoming soluble phosphorus	kg
chla	Incoming Chlorophyll-a	kg
nh3	Incoming ammonia nitrogen	kg
no2	Incoming nitrite nitrogen	kg
cbod	Incoming carbonaceous biochemical oxygen demand	kg
dox	Incoming dissolved oxygen	kg
san	Incoming sand	tons
sil	Incoming silt	tons
cla	Incoming clay	tons
sag	Incoming small aggregates	tons
lag	Incoming large aggregates	tons
grv	Incoming gravel	tons
null

Out

Field	Description	Unit
jday	Julian Day	n/a
mon	Month	n/a
day	Day of the month	n/a
yr	Year	n/a
name	Name of the source object	n/a
type	Type of the source object
objtyp	Type of the receiving object
typ_no	ID of the receiving object
hyd_typ	Type of the outgoing hydrograph
fraction	Fraction of the outgoing hydrograph
flo	Outgoing flow	m3/s
sed	Outgoing sediment	tons
orgn	Outgoing organic nitrogen	kg
sedp	Outgoing sediment phosphorus	kg
no3	Outgoing nitrate nitrogen	kg
solp	Outgoing soluble phosphorus	kg
chla	Outgoing Chlorophyll-a	kg
nh3	Outgoing ammonia nitrogen	kg
no2	Outgoing nitrite nitrogen	kg
cbod	Outgoing carbonaceous biochemical oxygen demand	kg
dox	Outgoing dissolved oxygen	kg
san	Outgoing sand	tons
sil	Outgoing silt	tons
cla	Outgoing clay	tons
sag	Outgoing small aggregates	tons
lag	Outgoing large aggregates	tons
grv	Outgoing gravel	tons
null