Every gauge we read

Each one links to its own evidence page: level, movement, publisher classification, same-date history, and the authority's own forecast.

The corridor type matters more than the number. On a free-flowing stretch the level is the constraint. On a lock-held stretch it is not — the gauge is there for the high-water side. Where a stretch has a line, each entry says whose it is: some are the waterway authority's own published figure, some are ours.

All gauges

Where each of these comes from, and under what licence · the threshold diary · feed health.