Hey yall whattup
I can play pretty decent and I guide white water. The more entertaining you are the better rips you get, and I live off of tips. This begs the question, how water proof is a harmonica? I want to take it down the river with me to play a little bit in some of the flat water sections
I wash my harps regularly and no issues. With that being said I think they would be water proof. Unless you have an old unsealed wood comb, then the wood can swell..
I heard even that some harmonicians plays gigs on wet harmonicas. They puts harmonicas to glass of water before concert.
Actually ……I kayak
As a kid on Chicago’s south side we would go to Maxwell street market (locals called it jew town) i can remember watching the blues men play. The harp player had a pitcher of water next to him a soaked his harps. I later learned they wanted the wood to swell to change the tone..
Don’t use a wooden combed harp or will get ruined. Make sure you have á way of keeping it dry so the reeds don’t choke when you go to play it.
Reminds me of a mishap I had in the ‘60’s. Accidentally went into the ocean with a harp in my pocket. The tiny, tiny sand particles got stuck in between reed slots and reeds. What a disaster that was cleaning them out. Don’t know if that would happen with river water LOL 
@Harmike - whattup congrats on playing well enough to get bigger tips!!!
Plastic comb you’re all good to go! Just give her a rinse under some hot tub water when you get home and then tap it out so you don’t get any river bacteria growing in your reeds! 
Rock on! 
A plastic comb should simplify things should you get wet.
Carry a small container of alcohol with you so you can dip it and get going quicker. Like just read your post. No talking over you intended.
Ditto : on-the-job use of isopropal is great…depending on the river, you will not want any river water anywhere near your harp. Bacteria is one thing, but you but you won’t want bad parasites entering your body through your lungs. Read up on it. Bring along sterile nitrile gloves in 1 gallon zip lock bag. Put a pair on and play and throw away. Keep practicing 