Hydrographic Surveys

Eesctom

BBM Current Events Admiral
Joined
Aug 9, 2010
Location
Coral Springs, Florida
#1
I was watching a Navionics video talking about how they have "surveyed" lakes. I was wondering if anyone knows how they actually survey the lakes.

Do they take a boat out and drive it up and down the lake in a pattern and record readings from a depthfinder or do they do it by satellite now? Just one of those things I was curious about.