Jefferson Parish Department of Sewerage – Sewer Infiltration and Inflow Management

Jefferson Parish, Lousiana

JP Sewer Manhole East Bank


MSMM principals conducted field survey of sewer manholes and pump stations utilizing GPS equipment (GPS System 500) and SKI-Pro software (both from Leica Geosystems), data entry into database and management of database (MS Access) to create and maintain Jefferson Parish’s intricate wastewater collection system network in ArcGIS software, mapping of the system’s features, followed by hydraulic modeling (InfoWorks) to identify problem areas under various storm conditions graphically within a GIS mapping environment, and recommend capacity and rehabilitation improvements to minimize rainfall derived infiltration and inflow (I&I) and related sanitary sewer overflows (SSOs).  Detailed field investigation of nearly 6,000 manholes and 250 plus pump stations were conducted.  Many rehabilitation projects have been identified costing upwards of $500 million, along with identifying many areas that will require sewer system evaluation surveys (SSES) to further pinpoint problem locations and causes.  A total of twenty SSO areas were chosen for evaluation as part of this project.  The total estimated cost of all recommended improvements as a result of model evaluation of 20 SSO areas located on the East Bank of Jefferson Parish was $21,858,424.  Currently the hydraulic model is being updated to reflect recent construction projects and identify/rank the remaining areas in terms of need for action to resolve current issues.



Jefferson Parish, Lousiana


Jefferson Parish


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