Appears to be about as active as SWEPI.
The important distinction here is "between the low water marks".
Looking at the SWEPI/Marsh Creek lease agreement from this list, the calculated average width of Marsh Creek where it flows through Delmar and adjoining townships is approx.18.944 ft.. I have driven by there many times, and that creek bed appears to be wider than that in many places.
Not saying this is fair, just thinking it could be a lot worse.
Begs the question; have the gascos been required to pay twice for the same acreage that was previously private ownership leased, before this came about?
Where do property owners own; i.e. low water, center, high water?
My understanding is that if a person owns 100 acres with a creek running through it and the state lays claim to it, the state gets all royalties for that creek bottom (At 20% with no deductions) and the land owner still pays taxes on it. the land owner no longer receives royalties for that creek bottom.