C-MAP Genesis in Three Simple Steps

1. Record sonar data. 2. Upload sonar files. 3. Download high-res map. … Go catch more and bigger fish.

Three Simple Steps


C-MAP Genesis is a cloud-based mapping service that empowers anglers to create custom, high-definition fishing maps from sonar data recorded with a compatible fish-finder unit on their own boat.

If there’s no map of your favorite waterbody, the benefits are immediately apparent – finally, you can know what’s below, and the best spots to go catch fish.

If there is already a map, but it’s inaccurate, you can now create a better map. Ever found a hump, ditch or drop-off that’s not on the map? Happens all the time. Even the most expensive off-the-shelf digital map cards are missing spots where you can catch big limits of fish. With C-MAP Genesis, that’s no longer a problem.

With the power in your hands to map uncharted depths and correct inaccurate contours, bad maps will never again hold you back and keep you from the fish. You are in control. You can map your own path to success.

Follow these steps to make your own maps and catch more and bigger fish:

Step 1: Record Sonar Data

With a mini-SD* card inserted in a compatible device, tap the following buttons in this order: “Sonar” … “Advanced” … “Log Sonar”. Doing so will record to the mini-SD card a sonar log that includes all the depth, vegetation and bottom-hardness data within the sonar cone emitting from your transducer. Record a new sonar log every hour or so on the water, because the Genesis servers can more quickly process 6 one-hour files than one 6-hour file.

For additional sonar-recording tips and/or to watch a how-to video, click here. For additional file-upload tips, click here.

Step 2: Upload Sonar Files

If you have a wi-fi enabled fish-finder running the latest software, your sonar recordings will automatically upload to CMAP Genesis when your unit connects with wifi. If you have an unlimited mobile data plan and good cell service, you can do this from your boat, on the water.

The other way to upload your sonar logs is to remove your mini-SD card from your fish-finder, insert it into your computer and then log into genesismaps.com and follow the prompts on the website. If you’ve ever posted a photo to Facebook, you’ll be familiar with the upload process, which is similar.

Step 3: Download High-Res Map

C-MAP Genesis will automatically create a downloadable map file from each sonar-log file you upload. You will receive an email when each file finishes processing. If you uploaded multiple files from the same waterbody, you can easily merge them into a single downloadable map file to save on your mini-SD card and use in your fish-finder on the water.

For additional download tips, click here. For additional merging tips, click here.

Catch More & Bigger Fish!

Now that you’ve got a better contour map – a map you can be confident is accurate, because you controlled the survey process – go fishing!

They say 90 percent of the fish are in 10 percent of the lake. The productive portions will stand out on your C-MAP Genesis map – humps and holes, reefs and shoals, drains and ditches, ledges and breaklines. Target those spot-on-the-spot areas unknown to other anglers and you’ll catch more and bigger fish.

* Some older fish-finders, including Lowrance HDS Gen2 units, use larger-size SD cards. Newer models, including Lowrance HDS Gen3 and Elites, use the mini-SD cards.