ero_pkq Subroutine

subroutine ero_pkq()

Uses

  • proc~~ero_pkq~~UsesGraph proc~ero_pkq ero_pkq module~basin_module basin_module proc~ero_pkq->module~basin_module module~climate_module climate_module proc~ero_pkq->module~climate_module module~hru_module hru_module proc~ero_pkq->module~hru_module module~hydrograph_module hydrograph_module proc~ero_pkq->module~hydrograph_module module~hydrograph_module->module~basin_module module~time_module time_module module~hydrograph_module->module~time_module

~ ~ ~ PURPOSE ~ ~ ~ this subroutine computes the peak runoff rate for each HRU and the entire subbasin using a modification of the rational formula

~ ~ ~ INCOMING VARIABLES ~ ~ ~ name |units |definition ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ hru_km(:) |km^2 |area of HRU in square kilometers ihru |none |HRU number tconc(:) |hr |time of concentration for HRU ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

~ ~ ~ OUTGOING VARIABLES ~ ~ ~ name |units |definition ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ qp_cms |m^3/s |peak runoff rate ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ SUBROUTINES/FUNCTIONS CALLED ~ ~ ~ Intrinsic: Log, Exp

~ ~ ~ ~ ~ ~ END SPECIFICATIONS ~ ~ ~ ~ ~ ~

mm/h m^3/s

NRCS dimensionless hydrograph with PRF convert ha-mm * mi2/259ha * in/25.4mm to mi2-in --> 1/6578.6

Arguments

None