Nah it's fine as long as you don't copy from Narutopedia or something*stands on the lake*
Well... I see it as a shinobi sends his chakra to his feet while he is on water to prevent him from falling in the water.... how.. The chakra propel his weight against the water or maybe the chakra makes the user light enough to not fall in.. (i suck at describing stuff like this.. =/ sorry)