Lawrenceville Sewer GIS
The City of Lawrenceville needed their sewer data mapped in GIS from information provided by sewer televising, surveyed manholes, and other historical maps.
Hampton, Lenzini and Renwick, Inc. (HLR) created a geodatabase of sewer data from information obtained from sewer televising, surveyed manholes, and historical maps. We detailed manholes collecting various GIS attributes including inspection date, manhole material, manhole condition, manhole diameter, observed infiltration, step conditions, frame and lid, type and condition, odor, flow, and rim elevation.
HLR processed information from 722 televised videos into a set of related tables to allow the user to display multiple videos and scoring documents per sewer line using hyperlinks in ArcMap. Additionally, our team imported available sewer pipe data including pipe scoring information (i.e., unassigned, O&M, structural, and overall pipe ratings), sewer pipe material, and pipe diameter as GIS attributes. From the televised sewer lines, 2,597 sewer laterals were digitized from distances available in the videos. Laterals were generated using an automated process whenever possible. The GIS data and hyperlinked videos were then used to inform pipe recommendations.
Click here to learn more about HLR’s GIS services.
City of Lawrenceville
Austin Ridgely, PLS