Kleinfelder has expertise in computer modeling of environmental systems and conducting research in the development of models and their algorithms. Although Kleinfelder is quite capable of handling very complex mathematical simulation models, it is our philosophy that the complexity of the model chosen should be appropriate to the case under study. In many situations, simplified mathematical models, even graphical models, are better employed for arriving at substantive and definitive conclusions.
Some models with which Kleinfelder staff are experienced include QUAL2E, WASP, DEM (Dynamic Estuary Model), CORMIX, EPANET, KYPIPE, HEC-1, HEC-2, HEC-6, TR-55, TR-20, HSPF, HydroCAD and SWMM. Kleinfelder has developed models including ODM (Omni Diurnal Model) for simulation of diurnally varying dissolved oxygen due to plant-nutrient dynamics, and OMNIWASP, a version of WASP for simulation of systems where rooted plants and macrophytes are critical in simulating oxygen and nutrient dynamics. Examples of cases in which Kleinfelder has conducted computer modeling include TMDLs, wasteload allocations, ground water simulation of toxic substances, nutrient studies, flow and water quality in water distribution systems, and dilution/plume studies for coastal and tidally influenced waterways.