The occasional glance up to ensure she stuck to task was all the Divination man spared for the Ravenclaw. He'd set the system up, he knew what would happen and when. By his watch's count, it was about time to give this activity a change of pace.

After adding the latest "T" to the parchments he was grading, Calvin looked up with a lazy sort of gaze. He suspected she must have gotten a few trips done in the time it'd taken him to get through the last 6...no it was 7--Merlin he needed a break--parchments. The trough didn't show any signs of her work but the water mill was steadily coming to it's end.

"I apologize, Ms. Gladin, but I've changed my mind." His tone betrayed the insincerity in his apology. With a flick of his wand, all the water she'd transported (and then some) appeared in the trough. It was nearly full now. "After some thought, I'd like you to move the water from the trough to the mill instead. It's looking a little empty, wouldn't you agree?" She didn't need to answer that.

"Get to it. You know what to do." And with that he turned to his grading again.