A Receiving Water Quality Model for Dissolved Metal Runoff from a Floating Drydock

Date of Award

Spring 1996

Document Type


Degree Name

Master of Science (MS)


Civil & Environmental Engineering


Environmental Engineering

Committee Director

A. Osman Akan

Committee Member

Gary C. Schafran

Committee Member

Jaewan Yoon

Call Number for Print

Special Collections LD4331.E54 F445


A methodology for modeling the water quality mixing zone of dissolved metal bearing storm water runoff is presented with specific application to floating drydocks in a tidal estuary. The method relies upon a solution of the mass balance equation as contained in the computer program, Water Quality Analysis Simulation Program (WASPS), an Environmental Protection Agency (EPA) model. Separate applications are presented for dissolved metal and solid settling to optimize the WASPS program capabilities.

WASPS provides the capability to evaluate the mass balance equation in a finite difference scheme applied over a large number of small volume segments. The program may be used to provide spatial and temporal predictions of a toxic metal plume in a receiving water. A preprocessing program has been written to format the extensive input data file for the WASP5 model. In addition, a postprocessing program has been written to format the output data for three dimensional plotting on a spreadsheet package. Calibration studies have been conducted to support the models.


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