GPS Mapping & Logging

Bravo utilizes Trimble GeoXH hand-held GPS loggers to map out underground drainage systems with sub-meter accuracy.  This simple process involves logging locations of access structures such as sewer manholes and storm catch basins, and inserting a CCTV transporter into connecting pipes.  The CCTV transporter (used in both mainline and lateral launch inspection) is equipped with a Sonde transmitter, which can be detected above ground.  Once the technician achieves a locate on the CCTV camera’s position, the pipe’s GPS location is then logged.

Bravo technician GPS logging a CCTV sonde locate.

Bravo technician GPS logging a CCTV sonde locate.

Whether verifying existing GIS location coordinates, or inspecting and mapping a sewer or storm system for the first time, Bravo’s GPS data is an essential tool for best management practices.  GPS data can be integrated into a GIS database and can be used indefinitely.  Too often, when CCTV inspections and locates are carried out, results are only marked in paint and/or paper maps, which deteriorate quickly or cannot be easily shared.

Bravo provides GPS logging data in numerous types of export formats (such as shapefiles, Google Earth (.kml) layers, and GPS Pathfinder), and in all reference datums in use, such as NAD27, NAD83, and WGS84.

GPS sewer locates can be overlayed onto Google Earth or integrated into GIS maps.

GPS sewer locates can be overlayed onto Google Earth or integrated into GIS maps.