Laura Rice / Texas Standard Jacob’s Well as it looks after recent flooding in July. The ebb and flowBut when the flow slows down, or stops altogether, the water recedes into the hole. “That’s when we dropped down to zero flow and for four years now we’ve been essentially at zero flow,” Flocke said. Laura Rice / Texas Standard Janet Dirmeyer made the trip to Jacob's Well in the hopes of swimming the watering hole. His kids are young enough that swimming has never been open here in their lifetimes — but Flocke’s hopeful.