I started first on the water by canoe. There are cds called Canoesongs Vol. I and II
originally a fundraiser for the Canadian Canoe Museum, and I've learned to play quite a few on guitar. (Favorite is "Red Canvas Canoe". There's also a fun kayak one on how "the Eskimo Roll is not a sweet confection..") They also eventually put out a guitar book of the songs, which I found after picking out several myself.
I also found a cd called Music River that incorporates all kinds of watercraft. The titles alone should tell you:
When You Pulled Out With Your Dagger (You Left a Blue Hole in my Heart)
My Kayak and Me
Runs and Riffles
There's So Much You Can Do in a Canoe
Smoky Mountain Mornin' Song
Talkin' Canoe Blues
Looks like it's available on cdbaby
. Have worked up many of these as well.
My husband and I (both canoe river guides at the time) received the Katie Lee cd for a wedding gift. Haven't worked any of those up yet, but also fun.
Mike Finders of Finnders & Youngberg also has a great song "Driftwood."
"Cisco Boat Launch" by Mark Merryman and the Canyon Rats
"Keepin' Time by the River" - Chuck Pyle
"The River" - Garth Brooks
"Moonlight on the Colorado" - three versions run through my head - the traditional, the Garrison Keillor version, and one by the same Mike Finders
"Ol' Man River" - Show Boat (musical)
"River in the Rain" - Big River (musical)
"When the River Meets the Sea" - Muppets
"Knee Deep" and "Toes" - Zac Brown Band
"River Bank" - Brad Paisley
"Paradise" (Green River) - John Prine
That said, if you're playing around a campfire in Colorado, you also have to know some John Denver, of course. Billy Joel goes over well, too. And I re-wrote one, for a "Colorado State of Mind" all about paddling.
And then there are all the songs you can throw in about the stars and/or moon at night...