GIS > Project Case Study

Water Distribution System Mapping 

The Madawaska Water District was established in 1953 and serves approximately 1,200 users within the town. The system currently consists of a filtration plant, single standpipe, and approximately 17 miles of distribution piping, ranging in size from 2  to 14 inches in diameter. The District relies on the St. John River as its source of drinking water.

Faced with the need for capital improvements and limited financial capacity, the District retained Wright-Pierce to develop a comprehensive system facility plan in accordance with guidelines established by the Maine Department of Human Service (DHS), Drinking Water Program.

One of the key initial tasks of the engineering effort was the development of an accurate map of the distribution system in order to develop a computer-based model of the system. Wright-Pierce worked with the District to update pipe sizes and layout, as well as valve and hydrant locations. The layout was then overlaid against aerial photography and USGS quad sheets to confirm scale and topographic relief.  From the mapping, a hydraulic model was developed and calibrated, based on the results of flow testing at various locations within the system. The model was then used to identify deficiencies in the distribution system piping and requirements for additional storage.

Other aspects of the study included an evaluation of treatment facility operations and recommendations regarding the proposed conversion of the District’s primary water supply to a groundwater source.

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