This term is used to refer to canoeing that is unusually onerous and complicated due to any number of challenges such as strainers, shallow water, or too many portages. It is derived from the intense canoe passage traveled by and named for the Wampanoag Nation in Massachusetts.
Upon returning to civilization with a leech dangling from his ankle, dozens of mosquito bites and blood stained clothes, Sam's friends asked if he had just gone canoeing. "No, my friends, not canoeing. I have been wamping."