Well, it is a good thing you decided to ask this question here. The only other way you could figure it out is by looking for other threads on other forums as a search engine, which won't return anything good at all. Here's my suggestion of depth map https://usa.fishermap.org/depth-map/ . The whole US covered there.
That's a good one. I like it a lot. I asked for several websites, but it is really all I need here. I checked it and was surprised by the details.
Well, it is a good thing you decided to ask this question here. The only other way you could figure it out is by looking for other threads on other forums as a search engine, which won't return anything good at all. Here's my suggestion of depth map https://usa.fishermap.org/depth-map/ . The whole US covered there.