Lake John is one of the named lake waters in Plaquemines Parish, and that gives me a reason to fish one reachable area before widening the search, so I would spend more time casting than relocating. My opening plan would be to fish one nearby short stretch patiently, because one productive area is more useful than several random moves.
Lake John Size, Maximum Depth and Volume
Exact size, depth, and storage measurements are difficult to verify for Lake John, so I would leave the missing number alone until a reliable source turns up, so I would treat the first outing as a chance to learn the water's scale. I would focus on checking the scale before assuming too much, because that is more useful than pretending a nearby lake has the same dimensions.
Fishing This Water
A dependable species list for Lake John is still limited, so the practical choice is to keep the tackle broad enough to learn what bites, so on the first visit I would use a versatile setup instead of guessing at a target species. I would bring a simple freshwater kit with live bait plus one or two simple lures, because one good bite is enough to start turning unknown water into familiar water.
A Practical Lake John Game Plan
I would approach Lake John by choosing one sheltered piece of water, one target, and a small tackle selection; if the first area is quiet, I would change one thing at a time so I know whether the adjustment helped.
Nearby fishing waters
Explore nearby waters, including local Featured destinations. Check each page for access and fishing restrictions.
Distances are straight-line estimates between mapped water locations.