AWWA IMTECH55815

The Massachusetts Water Resources Authority (MWRA) contracted with Camp Dresser & McKee Inc. (CDM) to improve its hydraulic and water quality modeling capabilities. This paper describes how GIS, SCADA, and fluoride tracer study results were used to create and calibrate MWRA's model. As part of this project, a software application (MIIGS) was written to create model input files directly from GIS and SCADA system data. The GIS provided facility data and the SCADA system provided operational data including diurnal demand curves for each customer meter. Preliminary calibration was performed under a variety of conditions ranging from low demands to maximum demands. Fluoride tracer studies were conducted to permit a final calibration based on travel time analyses as well as a more precise pressure calibration. To complete the project, a model maintenance procedure was developed, and training was conducted to ensure the future development of the model at the MWRA. Includes tables, figures.