this image is doing me psychic damage.

I've been looking at this closer, and it's a boat launch squeezed into the margins between the river and some vacant paved lot that's fenced off. What got paved was the existing parking lot and access road, while some effort was made to block off and restore another section where people had clearly also been driving onto and presumably parking on.

There's a much larger, nicer looking park across the water with a tiny parking lot and pedestrian and bike access from both sides of the river.