ABSTRACT
This chapter discusses the water environment modeling of the fate of chemicals in estuary, coastal groundwater, and ocean. In the first section, the principle of simplified estuary modeling is briefly discussed and followed up with a case study of estimating the time of water quality recovery in a tidal river after an accidental waste spill. The second section presents coastal groundwater management modeling. As a case study, the application of a simple analytical groundwater model RAM2 for the estimation of the sustainable yields of the Pearl Harbor coastal aquifer in Hawaii is presented. The third section discusses the modeling of the initial dilution of the wastewater plumes from marine outfalls. The modeling of wave-driven artificial upwelling and effluent mixing is then discussed in relation to the potential application of nutrient-rich deep ocean water (DOW) as a natural resource to ocean farming.
