Modeling

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On November 21, 2014, HWU took possession of a computer model of our entire water distribution system served by our North Water Treatment Plant located on Water Street in Henderson.  This model was prepared for us by Strand Associates, Inc., as a replacement for a previous model.

Unlike the previous model, this model was created with software that is integrated with the City’s GIS computer mapping system, which should make it much easier to keep the model up to date.  The new model allows us to verify conditions throughout our water distribution system, including our smallest diameter lines serving only a few of our customers.  Besides flow and pressure, we are able to determine water age and, therefore, water quality throughout our distribution system.

We have already used our new model to confirm improvements that can be made to our distribution system to improve water pressure to an underserved area on north Main Street.  Also, we are currently using the new model to show us what would happen within the water distribution system with proposed projects to construct a new booster pumping station and modify the distribution system to increase pressure to our city’s south industrial area.  We are also using it to better understand what benefits may be obtained by constructing a new elevated water tank at the south end of our system.

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Computer model showing “High Service Pump #3 Run Times”. (Click on the picture for a larger image)
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Computer model showing pressure variations at a dead-end pipe. (Click on the picture for a larger image)
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Computer model showing percent full at the Vine Street Tank. (Click on the picture for a larger image)
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Computer model showing flow through the Frontier Village Tank. (Click on the picture for a larger image)

HWU is also preparing to award work for the first ever development of a computer model for our sewer collection system.  This effort will be complicated by the existence of our combined sewer system throughout the central portion of the City.  The model will help us to know how best to reduce combined sewer overflow events resulting from the influx of storm water runoff into our combined sewers during heavy rains.  It will also help us to be more effective and efficient with the existing and proposed future capacities of our sanitary and storm sewers as well as to determine where damage from corrosion may be occurring in our sanitary sewers.

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