Start with the reservoir depth marks and the household release schedule. It is the source used to make a decision about whether the city can retain a larger reserve without flooding the maintenance walk below; it is not the decision itself. The rule only works if the source describes the conditions at the upper reservoir cut into the west face.
The latest count is 30 depth marks checked at dawn; the prior file listed 32. The responsible office has offered a limited remedy with an end date for review. The difference is a signal to check, not a verdict about who is right.
The disputed point is practical: The reserve proposal uses a recent high-water mark; older surveyors say the mark was taken before the spillway was cleared. One side relies on the posted total, while the other points to a narrow spillway whose lip sits one thumb above the older survey mark.
The risk of reading the file too broadly is that an entry becomes a conclusion. Tavi Orr checked the reservoir depth marks and the household release schedule 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.
Next: The survey office will publish both measurements and their dates side by side. A useful update will publish the method, exceptions and review date with the number.
