Abstract

Columbus Fuses LiDAR, Ortho-imagery, and ArcView to Determine Impervious Surfaces
Track: Remote Sensing Imagery
Author(s): Mike Merchant, Brian Stevens

For years, municipalities and local governments have determined impervious surfaces through manual methods involving interpretation using stereo-imagery or heads-up digitization from orthos. Both methods are time-consuming and costly and are therefore conducted infrequently. To provide a timely and cost-effective approach, the City of Columbus (Department of Public Utilities) initiated a process of delineating impervious surfaces by utilizing ortho-imagery and LiDAR. Fusing the ortho-imagery and LiDAR together provides an accurate means of deriving impervious surfaces located throughout the City and enables the City to more frequently update the impervious surface layer.

This presentation will cover the existing method used to delineate impervious surfaces and explain the benefits realized from implementing the automated process. This presentation will focus on the Esri 3-D Analyst, Spatial Analyst, and ArcView technology utilized to automate the delineation of impervious surfaces and demonstrate how the updated impervious surfaces are incorporated into the City's Esri-based GIS Framework.

Mike Merchant
City of Columbus, OH, Public Utilities Department
910 Dublin Road, 3rd Floor
Columbus , Georgia 43215
United States
Phone: 614.645.6810
E-mail: memerchant@columbus.gov

Brian Stevens
Woolpert, Inc.
4454 Idea Center Blvd.
Dayton , Ohio 45430-1500
United States
Phone: 937.461.5660
E-mail: Brian.stevens@woolpert.com