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Water Week in Review: Carraízo Up 9 cm, Nov 1–7

Published Nov 8, 2026, 6:05 AM AST787daily · Original analysis

At a glance

  • Carraízo: 40.74 → 40.83 m (+9 cm) over 6 days, Safe band, 3.79 in of rain nearby in the final week
  • La Plata: 42.12 → 42.10 m (−2 cm) over 6 days, Adjustments band, 2.55 in of rain nearby in the final week
  • Cidra: 400.59 → 400.82 m (+23 cm) over 6 days, Watch band, 3.82 in of rain nearby in the final week
  • Readings of November 1–7: 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 (1.13 m for Carraízo, 1.60 m for La Plata) and the pace at which it is closing or opening.

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The week of November 1–7 on AAA’s reservoir charts: Carraízo up 9 cm, La Plata down 2 cm. The numbers first, then what they add up to.

Where the reservoirs stand

Control Adjustments Ajustes Watch Observación Safe Seguridad Spilling Carraízo, 40.83 m, Safe (Seguridad), +319 cm since Aug 7, +11 cm vs Oct 31 40.83 Carraízo La Plata, 42.10 m, Adjustments (Ajustes), −445 cm since Aug 7, −10 cm vs Oct 31 42.10 La Plata Cidra, 400.82 m, Watch (Observación), +65 cm since Aug 7, +23 cm vs Oct 31 400.82 Cidra Toa Vaca, 148.27 m, Safe (Seguridad), +63 cm since Aug 7, +36 cm vs Oct 31 148.27 Toa Vaca Río Blanco, 28.40 m, Safe (Seguridad), +274 cm since Aug 7, +15 cm vs Oct 31 28.40 Río Blanco Fajardo, 51.19 m, Safe (Seguridad), +360 cm since Aug 7, +20 cm vs Oct 31 51.19 Fajardo AAA: DRINKING WATER Carite, 542.75 m, Safe (Seguridad), +74 cm since Aug 7, +2 cm vs Oct 31 542.75 Carite Patillas, 65.72 m, Safe (Seguridad), +190 cm since Aug 7, +2 cm vs Oct 31 65.72 Patillas Guineo, 902.21 m, Spilling (Desborde), −21 cm since Aug 7, +47 cm vs Oct 31 902.21 Guineo Matrullas, 734.69 m, Safe (Seguridad), +170 cm since Aug 7, +108 cm vs Oct 31 734.69 Matrullas Guayabal, 103.90 m, Safe (Seguridad), +155 cm since Aug 7, ±0 cm vs Oct 31 103.90 Guayabal Garzas, 736.06 m, Safe (Seguridad), +7 cm since Aug 7, +1 cm vs Oct 31 736.06 Garzas Guayo, 445.12 m, Spilling (Desborde), +233 cm since Aug 7, +70 cm vs Oct 31 445.12 Guayo Lucchetti, 171.67 m, Safe (Seguridad), +34 cm since Aug 7, −51 cm vs Oct 31 171.67 Lucchetti Loco, 70.21 m, Spilling (Desborde), +43 cm since Aug 7, +3 cm vs Oct 31 70.21 Loco Dos Bocas, 89.80 m, Safe (Seguridad), +24 cm since Aug 7, +39 cm vs Oct 31 89.80 Dos Bocas Caonillas, 251.76 m, Safe (Seguridad), +105 cm since Aug 7, +57 cm vs Oct 31 251.76 Caonillas Guajataca, 196.36 m, Safe (Seguridad), +42 cm since Aug 7, −19 cm vs Oct 31 196.36 Guajataca PREPA: HYDROELECTRIC Cerrillos, 166.21 m, Safe (Seguridad), −212 cm since Aug 7, −5 cm vs Oct 31 166.21 Cerrillos DRNA
Week 14 of the metro rotation (the San Juan area's rationing schedule). Where the 19 reservoirs stand as of Nov 7: 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) has slipped down. The biggest move since Oct 31 is Matrullas, up 108 cm to 734.69 m.

Reservoir by reservoir

Carraízo

Nov 1 → Nov 7
40.74 → 40.83 mSafe band today
Net change
+9 cm1.5 cm a day on average
Best morning
+15 cmNov 5
Worst morning
−2 cmNov 2
Rain nearby, last 7 days
3.79 inmost on Nov 4 (2.2 in)
Above the Watch line
1.13 mrising: Spilling line ≈ 8 days up

La Plata

Nov 1 → Nov 7
42.12 → 42.10 mAdjustments band today
Net change
−2 cm0.3 cm a day on average
Best morning
+28 cmNov 8
Worst morning
−11 cmNov 4
Rain nearby, last 7 days
2.55 inmost on Nov 7 (0.88 in)
Above the Control line
1.60 mholding

Cidra

Nov 1 → Nov 7
400.59 → 400.82 mWatch band today
Net change
+23 cm3.8 cm a day on average
Best morning
+24 cmNov 5
Worst morning
−1 cmNov 3
Rain nearby, last 7 days
3.82 inmost on Nov 4 (2.1 in)
Above the Adjustments line
0.59 mrising: Safe line ≈ 23 days up

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 +23 cm −34 cm Nov 1 Nov 7 Carraízo, Nov 1, 40.74 m, ±0 cm since Nov 1Carraízo, Nov 1, 40.74 m, ±0 cm since Nov 1Carraízo, Nov 2, 40.72 m, −2 cm since Nov 1Carraízo, Nov 2, 40.72 m, −2 cm since Nov 1Carraízo, Nov 3, 40.72 m, −2 cm since Nov 1Carraízo, Nov 3, 40.72 m, −2 cm since Nov 1Carraízo, Nov 4, 40.70 m, −4 cm since Nov 1Carraízo, Nov 4, 40.70 m, −4 cm since Nov 1Carraízo, Nov 5, 40.85 m, +11 cm since Nov 1Carraízo, Nov 5, 40.85 m, +11 cm since Nov 1Carraízo, Nov 6, 40.84 m, +10 cm since Nov 1Carraízo, Nov 6, 40.84 m, +10 cm since Nov 1Carraízo, Nov 7, 40.83 m, +9 cm since Nov 1Carraízo, Nov 7, 40.83 m, +9 cm since Nov 1Carraízo +9 cm La Plata, Nov 1, 42.12 m, ±0 cm since Nov 1La Plata, Nov 1, 42.12 m, ±0 cm since Nov 1La Plata, Nov 2, 42.04 m, −8 cm since Nov 1La Plata, Nov 2, 42.04 m, −8 cm since Nov 1La Plata, Nov 3, 41.94 m, −18 cm since Nov 1La Plata, Nov 3, 41.94 m, −18 cm since Nov 1La Plata, Nov 4, 41.83 m, −29 cm since Nov 1La Plata, Nov 4, 41.83 m, −29 cm since Nov 1La Plata, Nov 5, 41.78 m, −34 cm since Nov 1La Plata, Nov 5, 41.78 m, −34 cm since Nov 1La Plata, Nov 6, 41.84 m, −28 cm since Nov 1La Plata, Nov 6, 41.84 m, −28 cm since Nov 1La Plata, Nov 7, 42.10 m, −2 cm since Nov 1La Plata, Nov 7, 42.10 m, −2 cm since Nov 1La Plata −2 cm Cidra, Nov 1, 400.59 m, ±0 cm since Nov 1Cidra, Nov 1, 400.59 m, ±0 cm since Nov 1Cidra, Nov 2, 400.59 m, ±0 cm since Nov 1Cidra, Nov 2, 400.59 m, ±0 cm since Nov 1Cidra, Nov 3, 400.58 m, −1 cm since Nov 1Cidra, Nov 3, 400.58 m, −1 cm since Nov 1Cidra, Nov 4, 400.58 m, −1 cm since Nov 1Cidra, Nov 4, 400.58 m, −1 cm since Nov 1Cidra, Nov 5, 400.82 m, +23 cm since Nov 1Cidra, Nov 5, 400.82 m, +23 cm since Nov 1Cidra, Nov 6, 400.82 m, +23 cm since Nov 1Cidra, Nov 6, 400.82 m, +23 cm since Nov 1Cidra, Nov 7, 400.82 m, +23 cm since Nov 1Cidra, Nov 7, 400.82 m, +23 cm since Nov 1Cidra +23 cm
Change since Nov 1, 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

Carraízo started the week at 40.74 m and ends it up 9 cm, at 40.83 m (Safe band), an average of 1.5 cm a day over 6 days. Of 6 day-to-day changes, 4 were falls and 1 rises, with 1 unchanged. The sharpest fall was −2 cm on November 2. The biggest gain was +15 cm on November 5, the morning after 2.2 in of rain at the nearby gauges. It sits 1.13 m above the Watch line (the next band down). Gauges the U.S. Geological Survey (USGS) runs nearby recorded 3.79 in of rain in the final week. If the latest weekly rise held, it would climb into the Spilling band (Desborde) above (line at 40.95 m) in about 8 days.

La Plata started the week at 42.12 m and ends it down 2 cm, at 42.10 m (Adjustments band), an average of 0.3 cm a day over 6 days. Of 6 day-to-day changes, 4 were falls and 2 rises. The sharpest fall was −11 cm on November 4. The biggest gain was +28 cm on November 8, the morning after 0.88 in of rain at the nearby gauges. It sits 1.60 m above the Control line (the next band down). Gauges USGS runs nearby recorded 2.55 in of rain in the final week.

Cidra started the week at 400.59 m and ends it up 23 cm, at 400.82 m (Watch band), an average of 3.8 cm a day over 6 days. Of 6 day-to-day changes, 1 were falls and 1 rises, with 4 unchanged. The sharpest fall was −1 cm on November 3. The biggest gain was +24 cm on November 5, the morning after 2.1 in of rain at the nearby gauges. It sits 0.59 m above the Adjustments line (the next band down). Gauges USGS runs nearby recorded 3.82 in of rain in the final week. If the latest weekly rise held, it would climb into the Safe band (Seguridad) above (line at 401.71 m) in about 23 days.

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 Nov 1 Nov 4 Nov 7 Nov 1, 40.74 m, SafeNov 2, 40.72 m, −2 cm, SafeNov 3, 40.72 m, +0 cm, SafeNov 4, 40.70 m, −2 cm, SafeNov 5, 40.85 m, +15 cm, SafeNov 6, 40.84 m, −1 cm, SafeNov 7, 40.83 m, −1 cm, Safe 40.83 m
Carraízo since Nov 1, meters above sea level, shaded by AAA alert band. Data: AAA Monitoreo Diario.
Show the numbers
  • Nov 1, 40.74 m, Safe
  • Nov 2, 40.72 m, −2 cm, Safe
  • Nov 3, 40.72 m, +0 cm, Safe
  • Nov 4, 40.70 m, −2 cm, Safe
  • Nov 5, 40.85 m, +15 cm, Safe
  • Nov 6, 40.84 m, −1 cm, Safe
  • Nov 7, 40.83 m, −1 cm, Safe
Adjustments Watch Safe 40 42 44 46 48 50 52 Nov 1 Nov 4 Nov 7 Nov 1, 42.12 m, AdjustmentsNov 2, 42.04 m, −8 cm, AdjustmentsNov 3, 41.94 m, −10 cm, AdjustmentsNov 4, 41.83 m, −11 cm, AdjustmentsNov 5, 41.78 m, −5 cm, AdjustmentsNov 6, 41.84 m, +6 cm, AdjustmentsNov 7, 42.10 m, +26 cm, Adjustments 42.10 m
La Plata since Nov 1, meters above sea level, shaded by AAA alert band. Data: AAA Monitoreo Diario.
Show the numbers
  • Nov 1, 42.12 m, Adjustments
  • Nov 2, 42.04 m, −8 cm, Adjustments
  • Nov 3, 41.94 m, −10 cm, Adjustments
  • Nov 4, 41.83 m, −11 cm, Adjustments
  • Nov 5, 41.78 m, −5 cm, Adjustments
  • Nov 6, 41.84 m, +6 cm, Adjustments
  • Nov 7, 42.10 m, +26 cm, Adjustments
Adjustments Watch Safe 398 399 400 401 402 403 Nov 1 Nov 4 Nov 7 Nov 1, 400.59 m, WatchNov 2, 400.59 m, +0 cm, WatchNov 3, 400.58 m, −1 cm, WatchNov 4, 400.58 m, +0 cm, WatchNov 5, 400.82 m, +24 cm, WatchNov 6, 400.82 m, +0 cm, WatchNov 7, 400.82 m, +0 cm, Watch 400.82 m
Cidra since Nov 1, meters above sea level, shaded by AAA alert band. Data: AAA Monitoreo Diario.
Show the numbers
  • Nov 1, 400.59 m, Watch
  • Nov 2, 400.59 m, +0 cm, Watch
  • Nov 3, 400.58 m, −1 cm, Watch
  • Nov 4, 400.58 m, +0 cm, Watch
  • Nov 5, 400.82 m, +24 cm, Watch
  • Nov 6, 400.82 m, +0 cm, Watch
  • Nov 7, 400.82 m, +0 cm, Watch
This week's 6 Daily Water Watches

Levels: AAA’s daily reservoir chart, Nov 1–7. Rain: gauges USGS runs within 12 km of each reservoir. Rates and dates are arithmetic, not forecasts. How we report.

In context (787daily, from public data)

  • Cidra

    39,643Census estimate, 2020–20241809Founded36 sq mi (93.3 km²)Area
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 Up 9 cm, Nov 1–7”, Nov 8, 2026, https://787daily.com/news/2026-11-08-water-week-in-review-carraizo-up-9-cm-nov-1-7/

Numbers from
Seven days of validated reservoir readings and AAA notices
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Every Water Week in Review

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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

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