The Cohansey setting doesn't explain every leak
NJDEP describes the lower Cohansey as a wide tidal estuary, with marshes extending along the river below Bridgeton. That regional setting belongs in a flood conversation, but it doesn't prove that water on your cellar floor came from the river.
We ask if water crossed the yard or instead first appeared through a wall or joint. Photos from the start of a storm can be more useful than pictures of the cleanup. Once we understand the route, we can explain which repairs address foundation seepage and which concerns need floodplain advice beyond a waterproofing system.