I checked out the link, and I also looked up images of the milk snake. Some similarity in the marking but defiantly a different snake. I do not think I have ever see a water snake, so thanks for sharing your photo.
These snakes seem to be everywhere right now. It has just begun to get warm here, thank god! I thought this one would swim right up to my feet but he kept turning around and going back into the water. lol
The link said they were harmless but do look similar to water moccasins. My mother had an extreme fear of snakes but was very careful not to pass it on to me. Just last year I was tasked with removing a snake from an office. The poor little guarder snake hatchling had wandered into this woman's office, and had startled the woman. I donned my gloves, crawled under the desk and captured it. I snapped a couple of pictures before I released it into a field of deep grass. The pictures did not have a clear focus to them, so I have not posted them.
I should not have said hatchling, garter snakes are born live. The one I rescued was probably only about a week old. A common snake in up-state NY where I grew up, and here in Washington State where I live. Here is one I took a picture of back in 2011 [link]