We've been having really extreme tides recently + 19 and -2.5 ft in a 24-hour period. Because of this we thought we better follow up at the Ernest Gruening Cabin where we found the "Reverse Falls" so we could check out what it looks like at high tide.
We didn't actually see the ocean rushing into the salt chuck - we got there about an hour after the high tide had ebbed but here you can see that spawning salmon would have no problem making their way into marsh to make their way up Peterson Creek.
High Tide (11/15, about 2 pm)
Pretty Low tide (11/8, about 1 pm)