Model/ items | SIMCAT | TOMCAT | QUAL2EU | QUAL2KW | WASP7 | QUASAR |
Types | 1D, steady state, stochastic | 1D, steady state | 1D, steady state/dynamic | 1D, steady flow | 1D,2D,3D, Dynamic | 1D, dynamic, stochastic |
Modeling approch prosses | CSTRS | CSTRS | ADE, Equal river reaches | ADE, unequal river reaches | ADE, dynamic compartmental | CSTRS |
DO modeling inclueds CBOD, reaeration | DO modeling inclueds CBOD, reaeration nitrification | DO modeling inclueds CBOD, SOD, reaeration respiration, nitrification, photosynthesis | DO modeling inclueds CBOD, SOD, reaeration respiration, nitrification, photosynthesis | DO modeling inclueds CBOD, SOD, reaeration respiration, nitrification, photosynthesis | DO modeling inclueds CBOD, SOD, reaeration respiration, nitrification, photosynthesis | |
Modeling capability | DO, CBOD, ammonia, user defined conservative parameter | DO, CBOD, ammonia, chloride user defined parameter | 15 constituents including DO BOD, temp, algae, N (ON, NO₂, NO₃ NH₃), P (OP, PO₄), coliform, SOD, NCPAR | temp, PH, N (ON, NO₂, NO₃), P (OP, PO₄), DO,CBOD, TIC, alkalinity, phytoplankton, bottom-algae, SOD, detrious, pathogen | DO, temp, N (ON, NO₂, NO₃, NH₃), P (OP, PO₄), coliform, salinity, SOD, CBOD, bottom algae, silica, pesticides, OCHEM | DO, CBOD, nitrate, SOD, ammonia, unionized ammonia, temp, Ecoli, pH, conservative pollutant |
Strength | Runs quickly with limited data, autocalibration | Runs quickly with limited, greater accuracy than SIMCAT | widely tested, automatic uncertanity analysis | converts algal death to CBOD, autocalibration | converts algal death to CBOD | converts algal death to CBOD |
Limitations | Approach over simplistic | Approach over simplistic | Does not convert algal death to CBOD | Does not stimulate river branches | Requies extensive data, unliked sub-models | Requires extensive data |