Via the NY Outdoors Blog:

The Hudson River Valley Greenway has announced the availability of an interactive Water Trail map
on the newly updated and re‐designed Hudson River Greenway Water Trail
website. The redesigned website features a map of the water trail using
Google Map, as well as information pages for water trail users and
current and potential site owners, a page on currently designated
sites, location and use of kayak storage racks, water trail grants, and
a chronicle of this year’s Great Champlain‐Hudson Paddle.

The Hudson River Greenway Water Trail is a small boat trail along
portions of the lower Hudson River and is a component of the Hudson
River Greenway Trail System. The Water Trail contains access points
(launches), campsites and day use sites (attractions) along 256 miles
of the Hudson River and Champlain Canal. The trail begins in Whitehall,
Washington County and in Hadley, Saratoga County and ends at Battery
Park in Manhattan. Mark Castiglione, Acting Executive Director of the
Hudson River Valley Greenway, stated, “The interactive map includes a
comprehensive list of public access launch sites along the 256‐mile
Hudson River Greenway Water Trail. The map provides paddling
enthusiasts ready information about Water Trail sites and is a tool
they can use to help plan their river adventures.

Visit www.hudsongreenway.state.ny.us for more information about the Greenway and its programs.

This makes it a heck of a lot easier to figure out where the launch point for canoes and kayaks are, as they are often not marked all that well.  Kudos to all the folks at the Hudson River Greenway for making this happen.