River water quality modelling: II. Problems of the art

P. Shanahan, M. Henze, L. Koncsos, W. Rauch, P. Reichert, L. Somlyody, P. Vanrolleghem

Research output: Conference article

54 Citations (Scopus)


The U.S. EPA QUAL2E model is currently the standard for river water quality modelling. While QUAL2E is adequate for the regulatory situation for which it was developed (the U.S. wasteload allocation process), there is a need for a more comprehensive framework for research and teaching. Moreover, QUAL2E and similar models do not address a number of practical problems such as stormwater flow events, nonpoint source pollution, and transient streamflow. Limitations in model formulation affect the ability to close mass balances, to represent sessile bacteria and other benthic processes, and to achieve robust model calibration. Mass balance problems arise from failure to account for mass in the sediment as well as in the water column and due to the fundamental imprecision of BOD as a state variable.

Original languageEnglish
Pages (from-to)245-252
Number of pages8
JournalWater Science and Technology
Issue number11 pt 9
Publication statusPublished - dec. 1 1998
EventProceedings of the 1998 19th Biennial Conference of the International Association on Water Quality. Part 8 (of 10) - Vancouver, Can
Duration: jún. 21 1998jún. 26 1998

ASJC Scopus subject areas

  • Environmental Engineering
  • Water Science and Technology

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    Shanahan, P., Henze, M., Koncsos, L., Rauch, W., Reichert, P., Somlyody, L., & Vanrolleghem, P. (1998). River water quality modelling: II. Problems of the art. Water Science and Technology, 38(11 pt 9), 245-252. https://doi.org/10.1016/S0273-1223(98)00661-1