About this river
Union River is a 24.6 mile river near Dysart's Great Harbor Marina in Maine. The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
5 mapped launches sit in the mapped area of Union River, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.
In your pocket
Free, no account needed. Ramps, marinas, marine conditions, and maps in your pocket.
Every marina and boat ramp in your pocket
File a float plan and ETA before you cast off
Harbor and inlet webcams before you tow
GPS tracking that keeps recording beyond cell coverage
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For operators
Get your own branded surface in the Boating Hubs app and a directory listing in minutes. Bookings, digital waivers, and your whole operation live in one cockpit.
