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. Author manuscript; available in PMC: 2019 Jul 18.
Published in final edited form as: Biogeosciences. 2018;15:7059–7076. doi: 10.5194/bg-15-7059-2018

Table 1.

EPIC daily output variables converted to SWAT point source input.

EPIC output variable name EPIC variable description SWAT point source variable names SWAT point source variable description Conversion from EPIC to SWAT
Q/QDRN/SSF Surface flow, tile drainage, and subsurface flow (mm) FLODAY Contribution to stream flow for the day (m3) FLODAY = (Q+QDRN+SSF) × area
MUSL Sediment loss (kg ha−1) SEDDAY Sediment loading to reach for the day (metric tons) SEDDAY = (MUSL) × area × delivery ratio
YON N loss with sediment (kg ha−1) ORGNDAY Organic N loading to reach for the day (kg N) ORGNDAY = (YON) × area × delivery ratio
YP P loss with sediment (kg ha−1) ORGPDAY Organic P loading to reach for the day (kg P) ORGPDAY = (YP) × area × delivery ratio
QNO3/DRNN/SSFN N loss in surface runoff, tile drainage, and subsurface flow (kg ha−1) NO3DAY NO3 loading to reach for the day (kg N) N03DAY = (QNO3+DRNN+SSFN) × area
QAP/SSFP Ploss in surface and subsurface flow (kg ha−1) MINPDAY Mineral P loading to reach for the day (kg P) MINPDAY = (QAP+SSFP) × area

Area refers to HAWQS-SWAT agricultural land.