Quote Originally Posted by Yora View Post
Q6: If I cast control water to create a vortex and then start to move away, can I maintain concentration once I moved more than the spell's range of 300 feet away from the vortex?
A6 Yes. Once a spell is cast, there's no restrictions about how far the caster can be from the effects unless the spell description specifically says so (like Mage Hand, which says the hand disappears if it's more than 30 feet from you.