drrich2
Contributor
I think your phobia is getting to you. Neither cottonmouths (a.k.a. water moccasins) nor the non-venomous water snakes get anywhere near that large. For cottonmouths looks like 74 inches (6'2") is about the record, and the vast majority are far smaller. I grew up around cottonmouths in Arkansas; they mostly wanted to be left alone.
Richard.
Richard.