I'm not certain. The enclosure is 43" tall internally, there will be a waterfall, but quite far down, about a foot from the bulb and socket. The only water they would experience is vapor from the humidity, and maybe fog from the fogger
I must preface, I do not keep chameleons, but your forums have been very helpful for my research. I am working on building a Vine Snake enclosure (you might recognize them as the judgmental shoe lace). The enclosure has to have between 75% and 90% humidity, generally staying closer to 85%. I am...