Littoral rights vs metes and bounds property description

[Ilovenature77]

Are littoral rights different when comparing a meandered property that butts
up to a lake vs a metes and bounds property that contains a lake on it?

The issue is, a neighbor just bought property next to mine. My property is a
metes and bounds discription of a square 40 acre parcel with a 10 acre lake
on it.

There is some swampy marsh back from the actual lake that touches my
neighbor's land. He is claiming riparian or littoral rights in order to force a boat
through the marsh, over my property line and come into the lake on my
property.

I want to stop this neighbor from entering the lake. Does the fact I own a
40 acre square including the lake make a differance as opposed to a
situation of only owning the upland shore line around the lake?