> For the complete documentation index, see [llms.txt](https://swatplus.gitbook.io/io-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://swatplus.gitbook.io/io-docs/introduction-1/hydrology/hydrology.hyd.md). # hydrology.hyd This file defines the hydrological characteristics of the HRUs

Field	Description	Type	Unit	Default	Range
name	Name of the hydrology record	string	n/a	n/a	n/a
lat_time	Lateral flow travel time	real	days	0	0-180
lat_sed	Sediment concentration in lateral and groundwater flow	real	mg/L	0	0-5000
can_max	Maximum canopy storage	real	mm	1	0-100
esco	Soil evaporation compensation factor	real	none	0.5	0.01-1
epco	Plant uptake compensation factor	real	none	0	0.01-1
orgn_enrich	Organic nitrogen enrichment ratio for loading with sediment	real	none	0	0-1
orgp_enrich	Phosphorus enrichment ratio for loading with sediment	real	none	0	0-1
cn3_swf	Soil water adjustment factor for CN3	real	none		0-1
bio_mix	Biological mixing efficiency	real		0.2
perco	Percolation coefficient	real	none		0-1
lat_orgn	Organic nitrogen concentration in lateral flow	real	mg/L		0-200
lat_orgp	Organic phosphorus concentration in lateral flow	real	mg/L		0-200
pet_co	Linear adjustment factor for PET equations	real	none	1	0.8-1.2
latq_co	Lateral flow coefficient	real	none		0-1