I’ve finished adding NY waterways. Lakes and ponds came from a NYS shapefile. I threw away everything but the latitude and longitude, and used it as an index to trace bodies of water. I got the name off the USGS Topographic map. Streams and rivers came from Wikipedia’s list of New York State Rivers and Streams. All it has is the name and watershed. I used that to locate the waterway, and traced it off Bing.

Also fixed up the Hudson River bank, which was a bit under-digitized. Too few clicks. Much better now.