Songs about water such as oceans, lakes, rivers etc.

Lake Marie:  John Prine

The Ocean    Led Zeppelin

Wide River:  Steve Miller

Sea Cruise - Frankie Ford

The River Is Wide-Grassroots 

Don’t cross the river     America

Meeting Across The River:  Bruce

Into the mystic    Van Morrison

Rock Me On The Water:  Jackson Browne

Smoke On The Water  -  Deep Purple