Adventure seekers can opt out of the tour for a self guided Kauai kayaking paddle up the only navigable river in Hawaii. (parrishkauai.com)
The only navigable rivers in Hawaii are found — and enjoyed — on Kaua'i. (tripsavvy.com)
Whanganui is one of New Zealand's oldest cities and the Whanganui River — the longest navigable river in the country — is the lifeblood of the region. (thetravelmagazine.net)