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Daily Water Watch: Carraízo Rises to 37.20 m

Published Sep 1, 2026, 6:02 AM AST787daily · Original analysis

At a glance

  • Carraízo rose 6 cm to 37.20 m (ajustes band) — 0.20 m above the control line
  • La Plata fell 8 cm to 44.59 m (ajustes band) — 4.09 m above the control line, roughly 51.1 days at the current pace
  • Day 25 of the metro rotation that began Aug 8; levels are read each morning from AAA’s own 5:00 AM chart for our reservoir board

Why this matters: The number that matters is the gap to the next band line: 0.20 m for Carraízo, 4.09 m for La Plata. Straight-line dates move every day — the daily check is the point.

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Day 25 of the metro rotation. This morning’s 5:00 chart from the Autoridad de Acueductos y Alcantarillados shows Carraízo at 37.20 meters — up 6 centimeters from yesterday, and La Plata at 44.59 meters — down 8 centimeters from yesterday.

This is the 22th entry in our daily chart check (yesterday’s is here), built the same way every morning — from AAA’s own numbers, read off its charts for our reservoir board.

Carraízo: a rise

Carraízo gained ground overnight. This morning’s chart puts it at 37.20 meters — up 6 centimeters from yesterday, in the ajustes band. The next line on the chart — into the control band — sits at 37.00 meters, 0.20 meters below this morning’s reading.

control line · 37.00 m 37.63 37.20 — today ▲
Carraízo since Aug 19 (meters above sea level), against the control line. Data: AAA Monitoreo Diario.

Carraízo · September 1

Level today
37.20 mband: ajustes
Change since yesterday
+6 cm
To the control line
0.20 mline at 37.00 m
At the current pace
rising

La Plata: down 8 cm

La Plata kept sliding. This morning’s chart puts it at 44.59 meters — down 8 centimeters from yesterday, in the ajustes band. The next line on the chart — into the control band — sits at 40.50 meters, 4.09 meters below this morning’s reading. At AAA’s printed pace that is roughly 51.1 days out (straight-line date: Oct 23 — a projection, not a forecast; one wet afternoon moves it).

If your water comes from La Plata — Dorado, Guaynabo, Naranjito, Toa Alta, Toa Baja, Vega Alta, Bayamón, Cataño, Corozal — this is the reservoir to watch; AAA lists 130,828 client accounts on it.

control line · 40.50 m 45.62 44.59 — today ▼ at the current ~8 cm/day pace
La Plata since Aug 19 (meters above sea level), against the control line. Data: AAA Monitoreo Diario.

La Plata · September 1

Level today
44.59 mband: ajustes
Change since yesterday
-8 cm
To the control line
4.09 mline at 40.50 m
At the current pace
≈ 51.1 daysstraight-line date: Oct 23

The other rationing reservoir

Cidra · September 1

Level today
400.13 mband: ajustes
Change since yesterday
+7 cm
To the control line
1.76 mline at 398.37 m
At the current pace
rising

Numbers from AAA’s Monitoreo Diario chart of Sep 1, read each morning for our reservoir board — where the levels, the bands, and the live rain gauges update daily. Day counts start Aug 8, when the metro rotation took effect. Straight-line dates are arithmetic, not forecasts.

In context

About this analysis
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Source: 787daily, “Daily Water Watch: Carraízo Rises to 37.20 m”, Sep 1, 2026, https://787daily.com/news/2026-09-01-daily-water-watch-carraizo-rises-to-37-20-meters/

Numbers from
AAA's 5 AM reservoir chart, validated daily
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Today (JSON) · Reservoir history (CSV).Free to reuse under CC BY 4.0: credit 787daily.com with a link.

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