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Literature Review on Nutrient-Related Rates, Constants, and Kinetics Formulations in Surface Water Quality Modeling
Citation:
Cope, B., T. Shaikh, R. Parmar, S. Chapra, AND J. Martin. Literature Review on Nutrient-Related Rates, Constants, and Kinetics Formulations in Surface Water Quality Modeling. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-19/241, 2020.
Impact/Purpose:
The 1985 Second Edition of Rates, Constants, and Kinetics Formulations in Surface Water Quality Modeling (https://cfpub.epa.gov/si/si_public_record_Report.cfm?Lab=ORD&dirEntryID=34685 ) is a widely used source of information on kinetic formulations and associated rate constants and coefficients used in surface water quality modeling. One of the most common applications of this type of modeling is for Total Maximum Daily Load (TMDL) assessments conducted in support of the Clean Water Act. Advancements in water quality modeling over the last three decades have resulted in new and updated formulations not documented in the 1985 Rates Manual. Recent modeling and water quality process studies also have provided additional information on suitable values for rate constants and coefficients for model applications. Accordingly, this report presents the findings of a literature review reflecting the latest information on surface water quality modeling and rates, constants and kinetics for modeling related to several of the most commonly used for water quality management planning and development of TMDLs.
Description:
The information presented in this report describes an assessment of the body of literature related to the modeling applications for prediction of nutrients and related parameters including dissolved oxygen, pH, and algae for four models: WASP, CE¬QUAL-W2, HSPF, and QUAL2K/QUAL2Kw. Each model is also described with a focus on updates since the publication of the 1985 Second Edition of Rates, Constants, and Kinetics Formulations in Surface Water Quality Modeling (https://cfpub.epa.gov/si/si_public_record_Report.cfm?Lab=ORD&dirEntryID=34685 ) and the results of the literature review related to each model. The report also contains a review and tables of rate, constant, and kinetic (RCK) parameters from relevant literature sources for use by model practitioners. The report includes study-specific metadata for each model application including: study location, geographic applicability, environmental conditions, purpose/model use, and calibration period. Details on model updates since the 1985 Rates Manual, as well as a discussion of available literature, potential data gaps, and limitations related to model application are included within the report.