The East Quay board will publish a second gauge reading at sunrise after the latest field test found the lower mark can remain in shade after the upstream station has warmed. The water office has not changed its river threshold. It has changed how the two readings will appear beside it.
Gauge keeper Nell Arven and an upstream clerk made twelve paired checks during the last review window. The readings did not show one station was consistently wrong. They showed that the time of each reading matters when residents compare marks from different parts of the river.
The new board will keep both measurements, the time stamp and the location. Quay residents can use the lower stair reading, while the river council will use the upstream line for its warning call.
The trial closes at the end of the next river rise window. The council will compare the warning time with ferry closures before deciding whether the paired board becomes a permanent practice.
The council closed this docket by approving paired marks through the next river rise window. The next file will compare fresh readings with ferry closure times.
