787dailyPuerto Rico, en inglés
Morning Brief
Our reporting

Water Week in Review: Carraízo Down 8 cm, Oct 18–24

Published Oct 25, 2026, 6:05 AM AST787daily · Original analysis

At a glance

  • Carraízo: 40.85 → 40.77 m (−8 cm) over 6 days, Safe band, 2.24 in of rain nearby in the final week
  • La Plata: 43.18 → 42.76 m (−42 cm) over 6 days, Adjustments band, 0.2 in of rain nearby in the final week
  • Cidra: 400.63 → 400.61 m (−2 cm) over 6 days, Watch band, 3.44 in of rain nearby in the final week
  • Readings of October 18–24: the Puerto Rico Aqueduct and Sewer Authority (AAA) posted a chart on 7 of 7 days

Why this matters: What the week changed is the distance to the next band line (1.07 m for Carraízo, 2.26 m for La Plata) and the pace at which it is closing or opening.

Our coverage

Water live: reservoirs, rationing plans and your sector

Ask about Cidra's water

The week of October 18–24 on AAA’s reservoir charts: Carraízo down 8 cm, La Plata down 42 cm. The numbers first, then what they add up to.

Where the reservoirs stand

Control Adjustments Ajustes Watch Observación Safe Seguridad Spilling Carraízo, 40.77 m, Safe (Seguridad), +313 cm since Aug 7, −8 cm vs Oct 17 40.77 Carraízo La Plata, 42.76 m, Adjustments (Ajustes), −379 cm since Aug 7, −53 cm vs Oct 17 42.76 La Plata Cidra, 400.61 m, Watch (Observación), +44 cm since Aug 7, −3 cm vs Oct 17 400.61 Cidra Toa Vaca, 147.87 m, Safe (Seguridad), +23 cm since Aug 7, +88 cm vs Oct 17 147.87 Toa Vaca Río Blanco, 28.03 m, Safe (Seguridad), +237 cm since Aug 7, +14 cm vs Oct 17 28.03 Río Blanco Fajardo, 50.21 m, Safe (Seguridad), +262 cm since Aug 7, +66 cm vs Oct 17 50.21 Fajardo AAA: DRINKING WATER Carite, 542.52 m, Safe (Seguridad), +51 cm since Aug 7, −3 cm vs Oct 17 542.52 Carite Patillas, 65.50 m, Safe (Seguridad), +168 cm since Aug 7, −2 cm vs Oct 17 65.50 Patillas Guineo, 901.30 m, Safe (Seguridad), −112 cm since Aug 7, +15 cm vs Oct 17 901.30 Guineo Matrullas, 733.10 m, Safe (Seguridad), +11 cm since Aug 7, −38 cm vs Oct 17 733.10 Matrullas Guayabal, 103.85 m, Safe (Seguridad), +150 cm since Aug 7, +22 cm vs Oct 17 103.85 Guayabal Garzas, 736.06 m, Safe (Seguridad), +7 cm since Aug 7, +1 cm vs Oct 17 736.06 Garzas Guayo, 445.05 m, Spilling (Desborde), +226 cm since Aug 7, +77 cm vs Oct 17 445.05 Guayo Lucchetti, 171.86 m, Safe (Seguridad), +53 cm since Aug 7, −52 cm vs Oct 17 171.86 Lucchetti Loco, 70.15 m, Spilling (Desborde), +37 cm since Aug 7, +27 cm vs Oct 17 70.15 Loco Dos Bocas, 89.05 m, Safe (Seguridad), −51 cm since Aug 7, −55 cm vs Oct 17 89.05 Dos Bocas Caonillas, 251.79 m, Safe (Seguridad), +108 cm since Aug 7, −2 cm vs Oct 17 251.79 Caonillas Guajataca, 196.32 m, Safe (Seguridad), +38 cm since Aug 7, ±0 cm vs Oct 17 196.32 Guajataca PREPA: HYDROELECTRIC Cerrillos, 166.35 m, Safe (Seguridad), −198 cm since Aug 7, −25 cm vs Oct 17 166.35 Cerrillos DRNA
Week 12 of the metro rotation (the San Juan area's rationing schedule). Where the 19 reservoirs stand as of Oct 24: each column is that reservoir's own ladder of AAA bands, the bar its level in meters, the dashed tick where it stood on August 7, day one of the rotation, the triangle its change from seven days earlier. Source: AAA's 5 AM readings; bands as AAA's monitoring chart defines them.

17 of 19 reservoirs sit in the Safe band (Seguridad) or above, 1 in the Watch band (Observación); La Plata is in the Adjustments band (Ajustes). Since August 7, Carraízo (Adjustments → Safe), Cidra (Adjustments → Watch), Río Blanco (Watch → Safe), Fajardo (Watch → Safe), Matrullas (Watch → Safe), Guayabal (Watch → Safe), Guayo (Safe → Spilling), Loco (Safe → Spilling) have moved up a band; La Plata (Watch → Adjustments), Guineo (Spilling → Safe) have slipped down. The biggest move since Oct 17 is Toa Vaca, up 88 cm to 147.87 m.

Reservoir by reservoir

Carraízo

Oct 18 → Oct 24
40.85 → 40.77 mSafe band today
Net change
−8 cm1.3 cm a day on average
Best morning
+2 cmOct 19
Worst morning
−4 cmOct 23
Rain nearby, last 7 days
2.24 inmost on Oct 20 (0.77 in)
Above the Watch line
1.07 mmore than two months at this week's pace

La Plata

Oct 18 → Oct 24
43.18 → 42.76 mAdjustments band today
Net change
−42 cm7 cm a day on average
Best morning
+6 cmOct 21
Worst morning
−12 cmOct 25
Rain nearby, last 7 days
0.2 inmost on Oct 18 (0.2 in)
Above the Control line
2.26 m≈ 32 days at this week's pace

Cidra

Oct 18 → Oct 24
400.63 → 400.61 mWatch band today
Net change
−2 cm0.3 cm a day on average
Best morning
+1 cmOct 19
Worst morning
−2 cmOct 24
Rain nearby, last 7 days
3.44 inmost on Oct 18 (1.03 in)
Above the Adjustments line
0.38 mholding

Carraízo, this week

Carraízo, morning by morning. Tap a day for that day's Daily Water Watch

Teal = up from the previous reading, coral = down; a bold border marks a move of 20 cm or more. A day with no chart is grey, and the next day's move covers both.

Three reservoirs, one scale

0 +10 cm −42 cm Oct 18 Oct 24 Carraízo, Oct 18, 40.85 m, ±0 cm since Oct 18Carraízo, Oct 18, 40.85 m, ±0 cm since Oct 18Carraízo, Oct 19, 40.87 m, +2 cm since Oct 18Carraízo, Oct 19, 40.87 m, +2 cm since Oct 18Carraízo, Oct 20, 40.86 m, +1 cm since Oct 18Carraízo, Oct 20, 40.86 m, +1 cm since Oct 18Carraízo, Oct 21, 40.88 m, +3 cm since Oct 18Carraízo, Oct 21, 40.88 m, +3 cm since Oct 18Carraízo, Oct 22, 40.85 m, ±0 cm since Oct 18Carraízo, Oct 22, 40.85 m, ±0 cm since Oct 18Carraízo, Oct 23, 40.81 m, −4 cm since Oct 18Carraízo, Oct 23, 40.81 m, −4 cm since Oct 18Carraízo, Oct 24, 40.77 m, −8 cm since Oct 18Carraízo, Oct 24, 40.77 m, −8 cm since Oct 18Carraízo −8 cm La Plata, Oct 18, 43.18 m, ±0 cm since Oct 18La Plata, Oct 18, 43.18 m, ±0 cm since Oct 18La Plata, Oct 19, 43.07 m, −11 cm since Oct 18La Plata, Oct 19, 43.07 m, −11 cm since Oct 18La Plata, Oct 20, 43.00 m, −18 cm since Oct 18La Plata, Oct 20, 43.00 m, −18 cm since Oct 18La Plata, Oct 21, 43.06 m, −12 cm since Oct 18La Plata, Oct 21, 43.06 m, −12 cm since Oct 18La Plata, Oct 22, 42.97 m, −21 cm since Oct 18La Plata, Oct 22, 42.97 m, −21 cm since Oct 18La Plata, Oct 23, 42.87 m, −31 cm since Oct 18La Plata, Oct 23, 42.87 m, −31 cm since Oct 18La Plata, Oct 24, 42.76 m, −42 cm since Oct 18La Plata, Oct 24, 42.76 m, −42 cm since Oct 18La Plata −42 cm Cidra, Oct 18, 400.63 m, ±0 cm since Oct 18Cidra, Oct 18, 400.63 m, ±0 cm since Oct 18Cidra, Oct 19, 400.64 m, +1 cm since Oct 18Cidra, Oct 19, 400.64 m, +1 cm since Oct 18Cidra, Oct 20, 400.64 m, +1 cm since Oct 18Cidra, Oct 20, 400.64 m, +1 cm since Oct 18Cidra, Oct 21, 400.63 m, ±0 cm since Oct 18Cidra, Oct 21, 400.63 m, ±0 cm since Oct 18Cidra, Oct 22, 400.63 m, ±0 cm since Oct 18Cidra, Oct 22, 400.63 m, ±0 cm since Oct 18Cidra, Oct 23, 400.63 m, ±0 cm since Oct 18Cidra, Oct 23, 400.63 m, ±0 cm since Oct 18Cidra, Oct 24, 400.61 m, −2 cm since Oct 18Cidra, Oct 24, 400.61 m, −2 cm since Oct 18Cidra −2 cm
Change since Oct 18, in centimeters: three reservoirs on one scale. Hover or tap a point for the day's reading. Data: AAA Monitoreo Diario.

What it adds up to

The week’s story is La Plata. Its losses sped up to 7 cm a day, against 3.5 cm a day the week before, and it has fallen four mornings running. It now sits in the Adjustments band (Ajustes), 2.26 m above the Control line, and that pace would reach the line around November 26 (arithmetic, not a forecast). Carraízo and Cidra barely moved.

The rain explains the difference. Carraízo’s nearby gauges recorded 2.24 in and Cidra’s 3.44 in, enough to nudge each up a centimeter or two the next morning but not to reverse the slide. La Plata’s gauges caught only 0.2 in, so nothing offset its drawdown. Carraízo is still falling, but more slowly than the week before, and stays in the Safe band (Seguridad) with the Watch line (Observación) more than two months away at this pace. Cidra is essentially flat in observación, 0.38 m above the Adjustments line.

Each reservoir against its own next band line
Adjustments Watch Safe 37.0 37.5 38.0 38.5 39.0 39.5 40.0 40.5 41.0 Oct 18 Oct 21 Oct 24 Oct 18, 40.85 m, SafeOct 19, 40.87 m, +2 cm, SafeOct 20, 40.86 m, −1 cm, SafeOct 21, 40.88 m, +2 cm, SafeOct 22, 40.85 m, −3 cm, SafeOct 23, 40.81 m, −4 cm, SafeOct 24, 40.77 m, −4 cm, Safe 40.77 m at ~1 cm/day
Carraízo since Oct 18, meters above sea level, shaded by AAA alert band. Data: AAA Monitoreo Diario.
Show the numbers
  • Oct 18, 40.85 m, Safe
  • Oct 19, 40.87 m, +2 cm, Safe
  • Oct 20, 40.86 m, −1 cm, Safe
  • Oct 21, 40.88 m, +2 cm, Safe
  • Oct 22, 40.85 m, −3 cm, Safe
  • Oct 23, 40.81 m, −4 cm, Safe
  • Oct 24, 40.77 m, −4 cm, Safe
Adjustments Watch Safe 40 42 44 46 48 50 52 Oct 18 Oct 21 Oct 24 Oct 18, 43.18 m, AdjustmentsOct 19, 43.07 m, −11 cm, AdjustmentsOct 20, 43.00 m, −7 cm, AdjustmentsOct 21, 43.06 m, +6 cm, AdjustmentsOct 22, 42.97 m, −9 cm, AdjustmentsOct 23, 42.87 m, −10 cm, AdjustmentsOct 24, 42.76 m, −11 cm, Adjustments 42.76 m at ~7 cm/day
La Plata since Oct 18, meters above sea level, shaded by AAA alert band. Data: AAA Monitoreo Diario.
Show the numbers
  • Oct 18, 43.18 m, Adjustments
  • Oct 19, 43.07 m, −11 cm, Adjustments
  • Oct 20, 43.00 m, −7 cm, Adjustments
  • Oct 21, 43.06 m, +6 cm, Adjustments
  • Oct 22, 42.97 m, −9 cm, Adjustments
  • Oct 23, 42.87 m, −10 cm, Adjustments
  • Oct 24, 42.76 m, −11 cm, Adjustments
Adjustments Watch Safe 398 399 400 401 402 403 Oct 18 Oct 21 Oct 24 Oct 18, 400.63 m, WatchOct 19, 400.64 m, +1 cm, WatchOct 20, 400.64 m, +0 cm, WatchOct 21, 400.63 m, −1 cm, WatchOct 22, 400.63 m, +0 cm, WatchOct 23, 400.63 m, +0 cm, WatchOct 24, 400.61 m, −2 cm, Watch 400.61 m
Cidra since Oct 18, meters above sea level, shaded by AAA alert band. Data: AAA Monitoreo Diario.
Show the numbers
  • Oct 18, 400.63 m, Watch
  • Oct 19, 400.64 m, +1 cm, Watch
  • Oct 20, 400.64 m, +0 cm, Watch
  • Oct 21, 400.63 m, −1 cm, Watch
  • Oct 22, 400.63 m, +0 cm, Watch
  • Oct 23, 400.63 m, +0 cm, Watch
  • Oct 24, 400.61 m, −2 cm, Watch
This week's 6 Daily Water Watches

Levels: AAA’s daily reservoir chart, Oct 18–24. Rain: gauges the U.S. Geological Survey (USGS) runs within 12 km of each reservoir. Rates and dates are arithmetic, not forecasts. How we report.

In context (787daily, from public data)

About this analysisOriginal 787daily analysis of seven days of validated reservoir readings and AAA notices · Report an error
Cite this

Source: 787daily, “Water Week in Review: Carraízo Down 8 cm, Oct 18–24”, Oct 25, 2026, https://787daily.com/news/2026-10-25-water-week-in-review-carraizo-down-8-cm-oct-18-24/

Numbers from
Seven days of validated reservoir readings and AAA notices
Use our data
Today (JSON) · Reservoir history (CSV).Free to reuse under CC BY 4.0: credit 787daily.com with a link.

Every Water Week in Review

Our coverage

Water live: reservoirs, rationing plans and your sector

Ask about Cidra's water

Background

About Water Week in Review

The reservoirs' week in one read: which lakes rose or fell, how the bands moved, and what the rationing calendar did.

Published
Sundays
Source
Seven days of validated reservoir readings and AAA notices
Water

Earlier editions

All analysis