A dry century on the Nile, split at 1898

A dry century on the Nile, split at 1898

Question. Where does the 1898 break sit in a hundred years of Nile flow?

• Encoding. An annual-volume path keeps wet and dry years visible, with a fixed vertical comparison boundary.
• Ordering. Chronological source years.
• Baseline. The boundary defines a descriptive split; the volume axis is a position scale, not a bar-length baseline.
• Scale. One shared linear annual-volume scale.

What this design gives up

A single path cannot adjust for climate, gauge changes, or other confounders. The line is not an estimated intervention effect.

The cutoff is an explicit historical comparison, not a randomized intervention. Many environmental and measurement factors could differ across eras. Annual volumes are measured at Aswan, not all reaches of the Nile.