Thank you for your replies. I wanted to share the solution that I used. Every year, we employ a sewer cleaning company to maintain our wastewater assets. In this process, the company sends a HD camera though the flow line to visually inspect the system. We found that this would be a perfect time to deploy a new sonde that another department had purchased. Once the sonde was attached to the camera and sent through the line, we were able to track it above ground and spray paint small dots to mark the line location. In the end, all sewer access points and sonde points were used to compile a fairly accurate representation of the sewer main. I am now able to use the visual inspection video to map laterals off of the main, track problem areas, and generate profiles.
