> 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/swat+-output-files/carbon/output-files-generated-by-hru_cb.md). # Output Files Generated by hru\_cb

Output Files	Description
hru_begsim_soil_prop	Soil parameters by soil hydrology layer at the beginning of the simulation. This file contains soil physical and hydraulic properties for the layers defined in the soil_lyr_depths.sol file.
hru_endsim_soil_prop	Soil parameters by soil hydrology layer at the end of the simulation. This file contains soil physical and hydraulic properties for the layers defined in the soil_lyr_depths.sol file.
hru_cbn_lyr	Total soil organic carbon (SOC) in Mg/ha by soil hydrology layer at the end of the day, end of the month, and/or end of the year. Total soil organic carbon (SOC) is summed for metabolic litter, structural litter, microbial, slow, and passive pools.
hru_seq_lyr	Total sequestered soil organic carbon (SOC) in Mg/ha by soil hydrology layer at the end of the day, end of the month, and/or end of the year. Total sequestered soil organic carbon (SOC) stock is summed for microbial, slow, and passive pools (does not include the litter pools).
hru_cflux_stat	Carbon flux (kg/ha) for day, month-end day, and/or year-end day from the microbial, soil, and passive pools. cfmets1 - carbon from the metabolic litter pool to the microbial pool cfstrs1 - carbon from the non-lignin structural litter pool to the microbial pool. cfstrs2 - carbon from the lignin structural litter pool to the slow pool cfs1s2 - carbon from the microbial pool to the slow pool cfs1s3 - carbon from the microbial pool to the passive pool cfs2s1 - carbon from the slow pool to the microbial pool cfs2s3 - carbon from the slow pool to the passive pool cfs3s1 - carbon from the passive pool to the microbial pool co2fmet - CO₂ respired from the metabolic litter transformation co2fstr - CO₂ respired from the structural litter transformation co2fs1 - CO₂ respired from the microbial pool transformation co2fs2 - CO₂ respired from the slow pool transformation co2fs3 - CO₂ respired from the passive pool transformation efs1s2 - nitrogen from the microbial to the slow pool efs1s3 - nitrogen from the microbial to the passive pool efs2s1 - nitrogen from the slow to the microbial pool efs2s3 - nitrogen from the slow to the passive pool efs3s1 - nitrogen from the passive to the microbial pool imms1s2 - nitrogen immobilized from the microbial to the slow pool imms1s3 - nitrogen immobilized from the microbial to the passive pool imms2s1 - nitrogen immobilized from the slow to the microbial pool imms2s3 - nitrogen immobilized from the slow to the passive pool imms3s1 - nitrogen immobilized from the passive to the microbial pool mnrs1s2 - nitrogen mineralized from the microbial to the slow pool mnrs1s3 - nitrogen mineralized from the microbial to the passive pool mnrs2s1 - nitrogen mineralized from the slow to the microbial pool mnrs2s3 -nitrogen mineralized from the slow to the passive pool mnrs3s1 - nitrogen mineralized from the passive to the microbial pool
hru_cpool_stat	Total soil organic carbon SOC (kg/ha) by soil hydrology layer (and/or entire profile) from the microbial, soil, and passive pools at the end of the day, month-end day, and/or year-end day. structural c - lignin and non-lignin structural litter carbon lignin_c - lignin structural litter carbon metabolic_c - metabolic litter carbon hs_c - slow humus carbon hp_c - passive humus carbon microbial_c - microbial biomass carbon residue_c - residue carbon (kg/ha) [not yet allocated to litter carbon] soil_water - soil water fraction (mm/mm) water_c - dissolved organic carbon (kg/ha) [currently not in use] manure_c - manure carbon (kg/ha) [currently not in use]
hru_n_p_pool_stat	Nitrogen (N) and Phosphorus (P) by soil hydrology layer (and/or entire profile) from the microbial, soil, and passive pools at the end of the day, month-end day, and/or year-end day. tot_pool_n - sum of N from all pools structural_n - lignin and non-lignin structural litter N lignin_n - lignin structural litter N metabolic_n - metabolic litter N hs_n - slow humus N hp_n - passive humus N microbial_n - microbial biomass N tot_pool_p - sum of P from all pools structural_p - lignin and non-lignin structural litter P lignin_p - lignin structural litter P metabolic_p - metabolic litter P hs_p - slow humus P hp_p - passive humus P microbial_p - microbial biomass P residue_n - residue N (kg/ha) [not allocated to litter N] water_n - dissolved N (kg/ha) [currently not in use] manure_n - manure N (kg/ha) [currently not in use] residue_p - residue P (kg/ha) [not yet allocated to litter P] water_p - dissolved P (kg/ha) [currently not in use] manure_p - manure P (kg/ha) [currently not in use]
hru_plc_stat	Biomass carbon (kg/ha) at the end of the day, the month-end day, and/or the year-end day. total_c - total live biomass carbon ab_gr_c - above-ground live biomass carbon leaf_c - carbon in live leaves stem_c - carbon in live stems seed_c - carbon in live seeds root_c - carbon in live roots surf_c - surface residue carbon
hru_soilcarb	Carbon losses and transformations (kg/ha) at the end of the day, the month-end day, and/or the year-end day. [currently under development] sed_c-carbon loss via sediment transport surq_c-carbon loss in surface runoff surq_doc- dissolved organic carbon in surface runoff surc_dic- dissolved inorganic carbon in surface runoff latq_c-carbon loss in sub-surface runoff latq_doc- dissolved organic carbon in lateral flow latq_dic- dissolved inorganic carbon in lateral flow perc_c-carbon leached from soil profile perc_doc- dissolved organic carbon in percolation perc_dic- dissolved inorganic carbon in percolation res_decay- residue decay man_app_c- carbon input from manure application man_graze_c- carbon input from grazing manure rsp_c-carbon loss via respiration during plant residue decomposition emit_c-carbon loss from CH₄

### Output Files Generated by hru\_cb\_vars