>>2464286You have to look online and find a depth map. You can find them online and sometimes bait shops have them. They look the same as a topographical map. Tight contour lines = steep drop off, wide lines = gradual decline. Look up the term "percentage triangle" on youtube, its helped me tremendously. Pic related is a navionics app I use. It won't have every single body of water, but if it's surveyed, it will be in there, and there's a one month free trial.