Bottom-hardness layer available now for thousands of C-MAP Social Map charts, with Genesis Edge subscription

Finding and catching fish just became easier for C-MAP Genesis Edge customers. Bottom-hardness map layers are available now — via download from Social Map — for all premium Genesis subscribers, without additional cost.

Following the release of C-MAP’s new Social Map bottom-hardness layer, Genesis Edge subscribers will no longer have to survey a waterbody entirely by themselves in order to get a bottom-hardness map with 1-foot-contours. Bottom-hardness layers for thousands of highly detailed, community-sourced contour charts are now available to Genesis Edge customers with no more effort than the click of a button.

Why is knowing bottom hardness important?
They say 90% of the fish are in 10% of any waterbody, quite often around rocky areas, where they hold, feed and breed. So if you want to increase your chances of catching more and bigger fish, knowing where to find them is key. 1-foot contours are a step in the right direction, but bottom hardness data points to the most-productive spot-on-the-spot areas.

What will you be able to see?
A bottom-hardness map layer, overlaid atop a C-MAP Genesis-created 1-foot-contour chart, helps anglers more easily and quickly locate fish-holding rock, gravel, sand, clay and shellbeds. Dark orange areas show the hardest bottom; a lighter orange indicates the next-hardest bottom; tan is the next-hardest bottom; and pale yellow shows the softest-bottom areas. Your contour lines will be visible through the bottom-hardness layer, so it will be easy to see at what depth the transition areas are located

How do you get the Social Bottom Composition Layer?
Easy! Subscribe to C-MAP Genesis EDGE for $99 a year or $24.99 a month.

Additional Genesis Edge subscription features include:
– Submerged-vegetation layer for custom maps
– Sonar re-play
– Minute-to-minute weather information archived in sonar data
– Option to keep private any areas personally mapped
– Fishbrain catches overlayed atop online Social Map charts

Note: Upon insertion into a compatible Lowrance sonar/GPS unit, a C-MAP chart containing a bottom-hardness layer will default to showing that layer upon start-up. Steps to turn off (or later, back on) the bottom-hardness layer (it will be called “(AREA) Vegetation/Composition” in the menu) are:

— Select “Chart Options”
— Select “Categories”
— Toggle off (or later, back on) the ‘X’ in the “(AREA) Vegetation/Composition” entry field

C-MAP Reveal charts feature photo-realistic sea floor imagery for Simrad, Lowrance, B&G users

C-MAP’s new Reveal chart cards provide stunning, photo-realistic, high-resolution bathymetric imagery in select coastal and offshore areas to anglers and divers with compatible* Simrad, B&G or Lowrance sonar/GPS units at their helms. Attractive three-dimensional views of the sea floor bring to life the world below your boat, allowing you to locate underwater pinnacles and topographical landmarks easier than ever. These new charts allow anglers and divers to see more on the sea floor – including structure, wrecks, isolated reefs, ledges and more – all at a more affordable price than other charts in their category. Continue reading “C-MAP Reveal charts feature photo-realistic sea floor imagery for Simrad, Lowrance, B&G users”

Some C-MAP chart users require GPS-rollover software update to ensure Lowrance GPS functionality

Due to an April 6, 2019, GPS rollover Event, some C-MAP chart users will need to download and install updated software to ensure proper functionality of their Lowrance sonar/GPS units.

If you have one of the following Lowrance units a software update is required: Lowrance HDS Gen1, Lowrance HDS Gen2, Lowrance HDS Gen2 Touch, Lowrance Elite HDI, Lowrance Elite CHIRP, Lowrance HOOK, Lowrance Hook2 (9- and12-inch models only).

The requisite software update can be downloaded from here.

C-MAP Genesis Edge chart helped Jordan Lee win inaugural MLF Bass Pro Tour tournament

Better map, better fishing? No doubt about it!

A C-MAP Genesis Edge chart helped two-time Bassmaster Classic winner Jordan Lee win the inaugural Major League Fishing Bass Pro Tour tournament, the championship round of which was held on Florida’s Lake Garcia.

“I had the C-MAP card for Lake Garcia,” Lee explained in a Lowrance Instgram video. “This gave me super-detailed input on what I was seeing out there. … Having a great map … definitely helped me get the win today.”

Lee’s winning area – located on the north end of the lake – featured clear water, hydrilla and, most important, hard bottom suitable for spawning. He found and targeted those hard-bottom areas by turning on a unique bottom-hardness layer in a C-MAP Genesis Edge contour chart of Lake Garcia displayed on his Lowrance HDS Live sonar/GPS unit.

“I had a C-MAP card for Lake Garcia that shows a lot of the areas with the harder bottom,” Lee explained to Editor Todd Ceisner. “Those are always great places to start. At Garcia, once you’re back in the [thick vegetation], you could tell it started running out of the hard bottom and those areas wouldn’t be as productive.”

Previously, bottom-hardness map layers like the one Lee used were available only for waterbodies that C-MAP Genesis Edge subscribers mapped personally. But now, Genesis Edge subscribers can get bottom-hardness map layers for multiple select contour charts available for download from C-MAP’s Social Map. Continue reading “C-MAP Genesis Edge chart helped Jordan Lee win inaugural MLF Bass Pro Tour tournament”

Social Map now simultaneously displaying all charts available for download

We’re excited to unveil for you the new look of our C-MAP Genesis Social Map.

Social Map now features full, depth-shaded displays of all the mapping we have for the hundreds of thousands of waterbodies in our database, worldwide, all displayed at once on a global chart. Continue reading “Social Map now simultaneously displaying all charts available for download”

How to subscribe to Genesis Edge, C-MAP’s premium mapping service

While you can’t make your own luck, you can chart your own success. For those with drive, there’s better maps — C-MAP Genesis maps. To catch more and bigger fish tomorrow, subscribe to Genesis Edge today.

Genesis Edge is a premium upgrade to the free marine-mapping service C-MAP Genesis (formerly known as Insight Genesis). While the free version allows downloads of community-sourced digital Social Map charts and custom-color depth shading, Genesis Edge offers even more. Its key features include sonar replay, the option to keep personally mapped areas private and creation of your own bottom-hardness and submerged-vegetation map layers. No matter where you fish, or what species you target, those features are game-changers.

This article includes instructions for subscribing to Genesis Edge, as well as more information about how you can use Genesis Edge features to catch more and bigger fish.

Note: The “Plans” page at does not include a place to enter your credit card information and purchase a premium Genesis Edge subscription. To purchase an Edge subscription, you must first register for a free Genesis account, log in and then navigate to the bottom of the “Account” page in your Dashboard and click “Upgrade.” Full step-by-step directions follow.  Continue reading “How to subscribe to Genesis Edge, C-MAP’s premium mapping service”

How to merge ‘Winter Pool’ sonar data with ‘Summer Pool’ data — C-MAP Genesis Water Level Offsets Primer

This merged map, comprising 45 sonar-log files recorded at various times during a year of wildly varying water levels, is emerging as the most accurate and precise map of Lake St. Croix, because careful attention was paid to offsetting every sonar-log file to a standard water-level benchmark.

One of the best features of C-MAP Genesis is the ability to aggregate sonar data recorded in numerous trips over time in a complete, merged map. However, fluctuating water levels over time can impact the accuracy of aggregated maps if recorded water depths are not offset against a standard benchmark water level.

Naturally flowing rivers, dam-regulated river pools and vast reservoirs can all fluctuate greatly in water level from season to season, due to both natural and man-made forces. Natural forces include snowfall, rainfall and droughts. Man-made forces include flood-prevention measures and power-generation practices. Water levels are measured in feet above sea level. Continue reading “How to merge ‘Winter Pool’ sonar data with ‘Summer Pool’ data — C-MAP Genesis Water Level Offsets Primer”