Species:

Nerodia sipedon

Northern Watersnake

Subspecies I've seen:
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Midland Watersnake
N. s. pleuralis
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Common Watersnake
N. s. sipedon
Subspecies:

Nerodia sipedon pleuralis

Midland Watersnake

May 10, 2004
Little Swan Creek, Meriwether Lewis Site, Lewis County, Tennessee
Midland Watersnake (Nerodia sipedon pleuralis)
We were wading upstream in this beautiful shallow creek when we came upon this snake. It was enjoying a leisurely morning hunt, alternately drifting along the surface and prodding through the stones at the creek's bottom.
Subspecies:

Nerodia sipedon sipedon

Common Watersnake

May 5, 2004
Amicalola Falls State Park, Dawson County, Georgia
Common Watersnake (Nerodia sipedon sipedon)
Amicalola Falls State Park features a high metal staircase from the river basin to the top of the falls. We were waiting at the bottom of the stairs dithering about the issue of whether to carry our three little dogs up that far when a horde of schoolchildren descended on us, oohing and aahing about how cute our dogs were (they had a point!). One of the boys came over to me and said "have you seen any snakes yet?" and then proceeded to tell me exactly where to look for them from halfway up the stairs. I am indeed one of those people who likes being told where to find snakes, though I'm not sure how the boy knew. Sure enough, by following his directions I spotted this large female with two much smaller males trying to woo her.
May 8, 2004
Elkmont Campground, Great Smoky Mountains National Park, Sevier County, Tennessee
Common Watersnake (Nerodia sipedon sipedon)
After an early evening thunderstorm, my wife and I visited the camp bathroom to prepare for some hard-earned rest after a day of hiking and driving and salamander-photographing. As I pushed open the men's bathroom door, a fellow camper emerged and announced in a slow southern drawl "Now before anybody does anything else in here, we should probably consider doing something about the snake. I was just sitting there, trying to go about my business, when this snake started slithering around my feet." I recognized it as a watersnake, picked it up, and brought it back to our campsite for a few flash pictures.