* Advective Transport formulation
* Dispersive Transport formulation
* Surface Heat Budget formulation
* Dissolved Oxygen Saturation formulation
* Reaeration formulation
* Carbonaceous Deoxygenation formulation
* Nitrogenous Biochemical Oxygen Demand formulation
* Sediment oxygen demand formulation (SOD)
* Photosynthesis and Respiration formulation
* pH and Alkalinity formulation
* Nutrients formulation (fertilizers)
* Algae formulation
* Zooplankton formulation
* Coliform bacteria formulation (e.g. Escherichia coli )