The public account of the north sluice relies on the gate’s release board and the ward cistern level marks. A review of that source and the field notes finds a specific limit: the count can be repeated, but it does not include a stone channel that narrows at the final bend above the lower cisterns.
Tavi Orr checked the gate’s release board and the ward cistern level marks against the field notes. The method is to trace a system from its control gate to the last household it is meant to serve; it confirms the entries, but not every interpretation attached to them. The comparison covers 15 measured release turns; 15 appear in the prior file. No signed correction to either entry was present when this review closed.
Dema Orr, senior keeper of the north water gate, said the source register was complete for its stated purpose. The office has not provided a separate measure for how much reserve water reaches the lower wards after a thaw pushes grit through the upper channel, so the public record cannot yet show which account is more representative.
Keepers point to a steady total at the gate; residents point to a sharper fall in the last two cisterns. The current record does not settle that disagreement. This report does not establish that either side misstated the evidence. It establishes that the published total is narrower than the conclusion being drawn from it.
A second set of hands has checked the count and recorded where the methods differ. The entry belongs to the review week file at the North Sluice above the Lantern Stair. A mason crew will inspect the final bend during the next low-flow window. The next file should preserve the original entries and explain any change in method.
