Re: Limestone I.D.
I don't have time to expand on this subject but these streams are a result of geological conditions. Understanding topography, Karst Topography in particular is very helpful in determining whether or not you are in limestone country. Of course some streams are well known as limestone spring creeks but there are a few unpublished gems out there that I used to frequent. Your photo reminds me of Letort Spring in Cumberland County PA. but then many streams remind me of that one.