If your waterbody of interest is larger than a pond, you’ll most likely need to merge into a master map multiple sonar logs recorded in numerous trips on the water on separate days. The video at this link enumerates the steps to accomplish that. The second step is uploading your sonar-log files to your C-MAP Genesis account. To refresh your memory on how to do that, watch one of these videos: Lowrance Elite sonar-recording tutorial Lowrance HDS Gen3 & Gen2 touch tutorial. The second step is recording sonar logs on your favorite waterbody with your sonar/GPS unit. To start using C-MAP Genesis charts, visit the website at and click the blue “Sign Up Free” button (as seen in the image below). The first step to creating custom maps of your favorite waters is creating a free C-MAP Genesis account.

If you’re not ready yet to record sonar data and create your own custom maps - and would rather download free Social Map charts community-sourced by other anglers in the C-MAP Genesis community, read this article.

This article will cover the step-by-step process to download to an SD card and load into your sonar/GPS unit the custom maps you’ve made with sonar data you’ve recorded yourself. The key feature of C-MAP Genesis service is the ability to make your own contour charts of any waterbody on which you fish, cruise or sail, and use it on the sonar/GPS unit on your boat.* For anglers, especially, the benefits are revolutionary - not only can you create custom fishing maps with 1-foot contours of waterbodies for which there’s no other map in existence, but you can also improve contour detail on previously mapped waters, and discover and dissect spot-on-the-spot areas overlooked by other anglers.īut before you start catching more and bigger fish with custom C-MAP Genesis maps, you’ve got to get those maps onto the compatible* sonar/GPS unit on your boat.

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