Renn had set the reserve jars in the shade of the common shelter by the time Nova and Sela returned. A shallow bowl rested beside them, along with six smaller cups. She was measuring water when the little girl from earlier reached for a second serving.
"That's for this evening," Renn told her. "Go find your grandmother."
The girl went reluctantly. Daren was covering the vegetable beds with woven mats. He looked up as Sela approached, then glanced at her empty hands.
"You found the records, then?"
"We found a problem," Sela said. "The lower catch has a return vent. If its outlet is blocked, the flow we've diverted into it can push back toward the upper channels."
"Meaning the cistern could split again," Renn said.
"Yes. There's a third inspection point, but it isn't marked on Father's trail chart. Someone scratched it off the chamber diagram."
Daren stopped unfolding a mat. "A third point? Where?"
"That's what we're trying to find."
