I've got a decent amount of local information available on my computer, but printing it out would mean the paper would suffer the ravages of nature. I first stumbled across some waterproof copier paper way back in the mid-1980s, and still have a couple of hiking maps I copied to the stuff back then.
After this afternoon's "awakening," I found this website, which sells several kinds of waterproof laser printer paper. I think it'll take inkjet, as well, but unless your inks are themselves waterproof... Laser toner is actually microscopic beads of polymer infused with carbon. The printer's fuser literally melts them to the paper.
So, whether it's a list of phone numbers and addresses, Lat/Lon coordinates of various pre-determined shelters and food/water caches, or B&W copies of local topos, if you print them on waterproof paper, you're more likely to find them in good condition when you need them the most.