Lakemaster mapping for Bull Shoals

[Larry-Melea Buster]

On my Humminbird Helix 10 unit, I have the Lakemaster map card mid-south lakes version that includes Bull Shoals. I have the ability to change the lake level on the map by adding or decreasing feet (lake level offset) as per the daily lake level. My question is what is the default lake level on the map card? Since Bull Shoals has a fluctuating level based on the time of the year, how can I know for sure whether to add or subtract feet of water for an accurate map card reading? Here is what the USACE indicates for a lake level chart based on time of year: Today's level is at 652.59 so what would the normal pool level be to figure out how much to subtract?

Jan 01 to Apr 30 659 
Apr 30 to May 01 659 to 660 
May 01 to May 15 660 to 662 
May 15 to Jun 15 662 
Jun 15 to Jul 15 662 to 661 
Jul 15 to Sep 30 661 
Sep 30 to Oct 01 661 to 659 
Oct 01 to Dec 31 659

[Ham]

Good question. I assume 654 on mine, but YMMV. 

[alltelracer]

I think it would depend on when your Lakemaster data was last updated.  If you got it years ago and haven't updated then Ham's number would be correct.  If it's recent(within last couple years) then the normal pool numbers are in the data you posted above.

[Larry-Melea Buster]

New unit. I think the best way to be sure of accuracy is to just zoom into the lake, find what the contour line my map shows reletive to the boat position, look at actual depth, do the math and make the adjustment. Should take all the guess work out.

[nomolites]

3 hours ago, Larry-Melea Buster said:

New unit. I think the best way to be sure of accuracy is to just zoom into the lake, find what the contour line my map shows reletive to the boat position, look at actual depth, do the math and make the adjustment. Should take all the guess work out.

This is what I do, but after a few actual vs map comparisons.

Mike