2. Rivers and Streams
For non-navigable streams, the boundary line, as discussed above, goes to the thread of the stream. The owner on either side of a non-navigable river would therefore own the riverbed out to that point, and would have not only the right to use the water, and the riverbed, but would have the right to exclude others from passage, fishing, swimming and boating.
For navigable waters, the riverbed is considered in general to belong to the public, because the boundary is only to the low-water mark. At common law, grants of land from the state bounded on rivers above tide-water, or where the tide does not ebb and flow, were to the thread of the river. O.C.G.A. § 44-8-5, providing that where the river is navigable, the rights of the owner of adjacent land extend only to the low-water mark of the riverbed, became effective with the adoption of the Code of 1863, and therefore does not apply to grants that predate that Code. Parker v. Durham, 258 Ga. 140, 365 S.E.2d 411 (1988). Hence, as a practical matter, many navigable grants run to the center of the stream, but the public still has a right of passage. Such owners could prevent the taking of minerals from the riverbed, or from fishing the stream, however. Even in a latter day navigable stream situation, the owner can prevent fishing down to the low water mark--requiring the fisher to use a boat.
Taken from...
https://www.jbwpc.com/Zoning-and-La...ES-WHAT-ARE-YOUR-RIGHTS-AND-LIABILITIES.shtml
And for AL.
And the Lake has A whole different legal Gibberish.....It's very confusing and seems to depend on how the property Deed or the time it was deeded either before the lake was built or after? ...I can't fully understand, but I'm starting to think some land does own under the water and some owns up to the shore line, depending on Deed?
To say no one owns the land under the water is false. It really depends. "navigable" also doesn't mean by canoe in some cases, it means cargo type boats. That's a whole other thing to try to sort out.
b. Navigable
If the boundary is a navigable river or stream, the boundary line only extends to the low-water mark of the riverbed. O.C.G.A. § 44-8-5. The term "navigable stream" means a stream which is capable of transporting boats loaded with freight in the regular course of trade either for the whole or a part of the year. Id. Mere rafting of timber or transporting wood in small boats does not make a river navigable. Givens v. Ichauway, Inc., 268 Ga. 710, 492 S.E.2d 148 (1997)This provision is not applicable to ocean tidewaters, nor to any bay, estuary, or arm of the sea. Formerly, the law held that if the tide did not ebb and flow in the river, the boundary was the middle, but the Code changed that.
Heck, just do what you want, the cops will sort it out at some point if someone really cares! haha
Added.....
4. Title to Underwater Minerals
The right to mine soil, sand, gravel, minerals and other valuables from the bed of a river, stream or lake belongs to the owner of the bed. In the case of a non-navigable stream, or a navigable stream which grant predates 1963, therefore, ownership is split between the two adjacent property owners. Rockefeller v. First Nat’l Bank of Brusnwick, 213 Ga. 493, 100 S.E.2d 279 (1957).
Not sure if this subject would fall into the above category. I would imagine it does, even small and just trash, someone owns the the dirt and the rights to what's in it and the say "not to do it".
All this stuff is just for my State, just showing that the statement of "no one owns it" or " we have the Right to take things" is false. And Not that most people would ever even care. But the guy that does? Should have the right to kick people off his land with no issues. Even if it seems dumb to us.