me 45 years but sister and bil had a house on it-they fished it all the time until they moved.
There was one meadow above Landenburg that reminded me of Greenspring-
I grew up on Delaware park-White Clay ran through it-we used to guess what color the river would be-red or green,then they shut down the paper mill-I fished upper white[above Newark,Pike and Mill creek for trout as a kid-Fond memories-