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Daily Water Watch: Carraízo Steady at 40.84 m

Published Nov 14, 2026, 6:04 AM AST787daily · Original analysis

At a glance

  • Carraízo held at 40.84 m, in the Safe band (Seguridad); at this week’s pace, about 57 days until it reaches the Watch line (Observación)
  • La Plata held at 43.25 m, in the Adjustments band (Ajustes), 2.75 m above the Control line
  • Carraízo is falling, after a rise, averaging 2 cm a day over the past week; at that pace the Watch line arrives around January 10; 4.41 in of rain over the watershed this week
  • Day 100 of the metro rotation, the San Juan area’s rationing schedule, with interruptions paused since September 2, and the Puerto Rico Aqueduct and Sewer Authority (AAA) has not canceled it; the plan began August 7; levels from the chart AAA publishes at 5:00 AM

Why this matters: The number that matters is the gap to the next band line: 1.14 m for Carraízo, 2.75 m for La Plata. Straight-line dates move every day; the daily check is the point.

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San Juan's rationing plan, zones and calendar

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This morning’s 5:00 chart from AAA shows Carraízo flat at 40.84 meters. La Plata is flat at 43.25 meters.

Service today

Day 100 of the metro rotation, the San Juan area’s rationing schedule, with interruptions paused since September 2, and AAA has not canceled it.

AAA’s Cedro Arriba plan in Naranjito: AAA’s published calendar has run out; AAA has not said what follows.

Most important now

  • Service out in Vega Alta and Dorado, posted November 12 at 8:40 AM: AAA’s notice

Every notice AAA posts is on the water page, in its own words.

Reservoirs

Carraízo: holding

Carraízo held its level. This morning’s chart puts it flat at 40.84 meters, in the Safe band (Seguridad). The next line on the chart, into the Watch band (Observación), sits at 39.70 meters, 1.14 meters below this morning’s reading. At this week’s pace that is about 57 days away (at this pace, January 10: a projection, not a forecast; one wet afternoon moves it).

Adjustments Watch Safe 37.0 37.5 38.0 38.5 39.0 39.5 40.0 40.5 41.0 Sep 16 Oct 15 Nov 14 Oct 3, 40.70 m, USGS gauge at 5 AM, Safe Sep 16, 39.23 m, WatchSep 17, 40.06 m, +83 cm, SafeSep 18, 40.64 m, +58 cm, SafeSep 19, 40.80 m, +16 cm, SafeSep 20, 40.81 m, +1 cm, SafeSep 21, 40.79 m, −2 cm, SafeSep 22, 40.75 m, −4 cm, SafeSep 23, 40.70 m, −5 cm, SafeSep 24, 40.68 m, −2 cm, SafeSep 25, 40.68 m, +0 cm, SafeSep 26, 40.67 m, −1 cm, SafeSep 27, 40.63 m, −4 cm, SafeSep 28, 40.58 m, −5 cm, SafeSep 29, 40.53 m, −5 cm, SafeSep 30, 40.51 m, −2 cm, SafeOct 1, 40.47 m, −4 cm, SafeOct 2, 40.60 m, +13 cm, SafeOct 4, 40.74 m, +4 cm, SafeOct 5, 40.72 m, −2 cm, SafeOct 6, 40.69 m, −3 cm, SafeOct 7, 40.65 m, −4 cm, SafeOct 8, 40.88 m, +23 cm, SafeOct 9, 40.94 m, +6 cm, SafeOct 10, 40.91 m, −3 cm, SafeOct 11, 40.96 m, +5 cm, SpillingOct 12, 40.86 m, −10 cm, SafeOct 13, 40.90 m, +4 cm, SafeOct 14, 40.94 m, +4 cm, SafeOct 15, 40.85 m, −9 cm, SafeOct 16, 40.87 m, +2 cm, SafeOct 17, 40.85 m, −2 cm, SafeOct 18, 40.85 m, +0 cm, 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, SafeOct 25, 40.75 m, −2 cm, SafeOct 26, 40.75 m, +0 cm, SafeOct 27, 40.73 m, −2 cm, SafeOct 28, 40.77 m, +4 cm, SafeOct 29, 40.76 m, −1 cm, SafeOct 30, 40.75 m, −1 cm, SafeOct 31, 40.72 m, −3 cm, SafeNov 1, 40.74 m, +2 cm, 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, SafeNov 8, 40.96 m, +13 cm, SpillingNov 9, 40.88 m, −8 cm, SafeNov 10, 40.90 m, +2 cm, SafeNov 11, 40.84 m, −6 cm, SafeNov 12, 40.84 m, +0 cm, SafeNov 13, 40.84 m, +0 cm, SafeNov 14, 40.84 m, +0 cm, Safe 40.84 m at ~2 cm/day Nov 8, 1.72 in of rainNov 9, 2.36 in of rainNov 10, 0.01 in of rainNov 12, 0.27 in of rainNov 14, 0.05 in of rain rain to 2.36 in
Carraízo since Sep 16, meters above sea level, shaded by AAA alert band, with daily rain from gauges the U.S. Geological Survey (USGS) runs within 12 km. Data: AAA Monitoreo Diario; hollow points are the USGS gauge's 5 AM reading on mornings AAA's chart has none (AAA's own record here starts Sep 16).
Show the numbers
  • Sep 16, 39.23 m, Watch
  • Sep 17, 40.06 m, +83 cm, Safe
  • Sep 18, 40.64 m, +58 cm, Safe
  • Sep 19, 40.80 m, +16 cm, Safe
  • Sep 20, 40.81 m, +1 cm, Safe
  • Sep 21, 40.79 m, −2 cm, Safe
  • Sep 22, 40.75 m, −4 cm, Safe
  • Sep 23, 40.70 m, −5 cm, Safe
  • Sep 24, 40.68 m, −2 cm, Safe
  • Sep 25, 40.68 m, +0 cm, Safe
  • Sep 26, 40.67 m, −1 cm, Safe
  • Sep 27, 40.63 m, −4 cm, Safe
  • Sep 28, 40.58 m, −5 cm, Safe
  • Sep 29, 40.53 m, −5 cm, Safe
  • Sep 30, 40.51 m, −2 cm, Safe
  • Oct 1, 40.47 m, −4 cm, Safe
  • Oct 2, 40.60 m, +13 cm, Safe
  • Oct 3, 40.70 m, USGS gauge at 5 AM, Safe
  • Oct 4, 40.74 m, +4 cm, Safe
  • Oct 5, 40.72 m, −2 cm, Safe
  • Oct 6, 40.69 m, −3 cm, Safe
  • Oct 7, 40.65 m, −4 cm, Safe
  • Oct 8, 40.88 m, +23 cm, Safe
  • Oct 9, 40.94 m, +6 cm, Safe
  • Oct 10, 40.91 m, −3 cm, Safe
  • Oct 11, 40.96 m, +5 cm, Spilling
  • Oct 12, 40.86 m, −10 cm, Safe
  • Oct 13, 40.90 m, +4 cm, Safe
  • Oct 14, 40.94 m, +4 cm, Safe
  • Oct 15, 40.85 m, −9 cm, Safe
  • Oct 16, 40.87 m, +2 cm, Safe
  • Oct 17, 40.85 m, −2 cm, Safe
  • Oct 18, 40.85 m, +0 cm, 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
  • Oct 25, 40.75 m, −2 cm, Safe
  • Oct 26, 40.75 m, +0 cm, Safe
  • Oct 27, 40.73 m, −2 cm, Safe
  • Oct 28, 40.77 m, +4 cm, Safe
  • Oct 29, 40.76 m, −1 cm, Safe
  • Oct 30, 40.75 m, −1 cm, Safe
  • Oct 31, 40.72 m, −3 cm, Safe
  • Nov 1, 40.74 m, +2 cm, 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
  • Nov 8, 40.96 m, +13 cm, Spilling
  • Nov 9, 40.88 m, −8 cm, Safe
  • Nov 10, 40.90 m, +2 cm, Safe
  • Nov 11, 40.84 m, −6 cm, Safe
  • Nov 12, 40.84 m, +0 cm, Safe
  • Nov 13, 40.84 m, +0 cm, Safe
  • Nov 14, 40.84 m, +0 cm, Safe
  • Nov 8, 1.72 in of rain
  • Nov 9, 2.36 in of rain
  • Nov 10, 0.01 in of rain
  • Nov 12, 0.27 in of rain
  • Nov 14, 0.05 in of rain

Carraízo, November 14

Level today
40.84 mSafe band
Change since yesterday
0 cm
To the Watch line
1.14 mline at 39.70 m
At this week's pace
about 57 daysat this pace: January 10

La Plata: holding

La Plata held its level. This morning’s chart puts it flat at 43.25 meters, in the Adjustments band (Ajustes). The next line on the chart, into the Control band, sits at 40.50 meters, 2.75 meters below this morning’s reading.

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.

Adjustments Watch Safe 40 42 44 46 48 50 52 Sep 16 Oct 15 Nov 14 Oct 3, 43.87 m, USGS gauge at 5 AM, Adjustments Sep 16, 44.40 m, AdjustmentsSep 17, 44.36 m, −4 cm, AdjustmentsSep 18, 44.40 m, +4 cm, AdjustmentsSep 19, 44.61 m, +21 cm, AdjustmentsSep 20, 44.66 m, +5 cm, AdjustmentsSep 21, 44.70 m, +4 cm, AdjustmentsSep 22, 44.72 m, +2 cm, AdjustmentsSep 23, 44.68 m, −4 cm, AdjustmentsSep 24, 44.63 m, −5 cm, AdjustmentsSep 25, 44.56 m, −7 cm, AdjustmentsSep 26, 44.47 m, −9 cm, AdjustmentsSep 27, 44.39 m, −8 cm, AdjustmentsSep 28, 44.31 m, −8 cm, AdjustmentsSep 29, 44.22 m, −9 cm, AdjustmentsSep 30, 44.13 m, −9 cm, AdjustmentsOct 1, 44.04 m, −9 cm, AdjustmentsOct 2, 43.96 m, −8 cm, AdjustmentsOct 4, 43.79 m, −8 cm, AdjustmentsOct 5, 43.71 m, −8 cm, AdjustmentsOct 6, 43.70 m, −1 cm, AdjustmentsOct 7, 43.68 m, −2 cm, AdjustmentsOct 8, 43.62 m, −6 cm, AdjustmentsOct 9, 43.54 m, −8 cm, AdjustmentsOct 10, 43.52 m, −2 cm, AdjustmentsOct 11, 43.50 m, −2 cm, AdjustmentsOct 12, 43.45 m, −5 cm, AdjustmentsOct 13, 43.45 m, +0 cm, AdjustmentsOct 14, 43.50 m, +5 cm, AdjustmentsOct 15, 43.47 m, −3 cm, AdjustmentsOct 16, 43.39 m, −8 cm, AdjustmentsOct 17, 43.29 m, −10 cm, AdjustmentsOct 18, 43.18 m, −11 cm, 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, AdjustmentsOct 25, 42.64 m, −12 cm, AdjustmentsOct 26, 42.52 m, −12 cm, AdjustmentsOct 27, 42.40 m, −12 cm, AdjustmentsOct 28, 42.28 m, −12 cm, AdjustmentsOct 29, 42.27 m, −1 cm, AdjustmentsOct 30, 42.27 m, +0 cm, AdjustmentsOct 31, 42.20 m, −7 cm, AdjustmentsNov 1, 42.12 m, −8 cm, 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, AdjustmentsNov 8, 42.38 m, +28 cm, AdjustmentsNov 9, 42.51 m, +13 cm, AdjustmentsNov 10, 42.93 m, +42 cm, AdjustmentsNov 11, 43.15 m, +22 cm, AdjustmentsNov 12, 43.22 m, +7 cm, AdjustmentsNov 13, 43.25 m, +3 cm, AdjustmentsNov 14, 43.25 m, +0 cm, Adjustments 43.25 m Nov 8, 0.65 in of rainNov 9, 0.46 in of rainNov 10, 0.01 in of rain rain to 0.65 in
La Plata since Sep 16, meters above sea level, shaded by AAA alert band, with daily rain from gauges USGS runs within 12 km. Data: AAA Monitoreo Diario; hollow points are the USGS gauge's 5 AM reading on mornings AAA's chart has none (AAA's own record here starts Sep 16).
Show the numbers
  • Sep 16, 44.40 m, Adjustments
  • Sep 17, 44.36 m, −4 cm, Adjustments
  • Sep 18, 44.40 m, +4 cm, Adjustments
  • Sep 19, 44.61 m, +21 cm, Adjustments
  • Sep 20, 44.66 m, +5 cm, Adjustments
  • Sep 21, 44.70 m, +4 cm, Adjustments
  • Sep 22, 44.72 m, +2 cm, Adjustments
  • Sep 23, 44.68 m, −4 cm, Adjustments
  • Sep 24, 44.63 m, −5 cm, Adjustments
  • Sep 25, 44.56 m, −7 cm, Adjustments
  • Sep 26, 44.47 m, −9 cm, Adjustments
  • Sep 27, 44.39 m, −8 cm, Adjustments
  • Sep 28, 44.31 m, −8 cm, Adjustments
  • Sep 29, 44.22 m, −9 cm, Adjustments
  • Sep 30, 44.13 m, −9 cm, Adjustments
  • Oct 1, 44.04 m, −9 cm, Adjustments
  • Oct 2, 43.96 m, −8 cm, Adjustments
  • Oct 3, 43.87 m, USGS gauge at 5 AM, Adjustments
  • Oct 4, 43.79 m, −8 cm, Adjustments
  • Oct 5, 43.71 m, −8 cm, Adjustments
  • Oct 6, 43.70 m, −1 cm, Adjustments
  • Oct 7, 43.68 m, −2 cm, Adjustments
  • Oct 8, 43.62 m, −6 cm, Adjustments
  • Oct 9, 43.54 m, −8 cm, Adjustments
  • Oct 10, 43.52 m, −2 cm, Adjustments
  • Oct 11, 43.50 m, −2 cm, Adjustments
  • Oct 12, 43.45 m, −5 cm, Adjustments
  • Oct 13, 43.45 m, +0 cm, Adjustments
  • Oct 14, 43.50 m, +5 cm, Adjustments
  • Oct 15, 43.47 m, −3 cm, Adjustments
  • Oct 16, 43.39 m, −8 cm, Adjustments
  • Oct 17, 43.29 m, −10 cm, Adjustments
  • Oct 18, 43.18 m, −11 cm, 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
  • Oct 25, 42.64 m, −12 cm, Adjustments
  • Oct 26, 42.52 m, −12 cm, Adjustments
  • Oct 27, 42.40 m, −12 cm, Adjustments
  • Oct 28, 42.28 m, −12 cm, Adjustments
  • Oct 29, 42.27 m, −1 cm, Adjustments
  • Oct 30, 42.27 m, +0 cm, Adjustments
  • Oct 31, 42.20 m, −7 cm, Adjustments
  • Nov 1, 42.12 m, −8 cm, 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
  • Nov 8, 42.38 m, +28 cm, Adjustments
  • Nov 9, 42.51 m, +13 cm, Adjustments
  • Nov 10, 42.93 m, +42 cm, Adjustments
  • Nov 11, 43.15 m, +22 cm, Adjustments
  • Nov 12, 43.22 m, +7 cm, Adjustments
  • Nov 13, 43.25 m, +3 cm, Adjustments
  • Nov 14, 43.25 m, +0 cm, Adjustments
  • Nov 8, 0.65 in of rain
  • Nov 9, 0.46 in of rain
  • Nov 10, 0.01 in of rain

La Plata, November 14

Level today
43.25 mAdjustments band
Change since yesterday
0 cm
To the Control line
2.75 mline at 40.50 m
At this week's pace
rising

Cidra: the other rationing reservoir

Level today
400.95 mWatch band
Change since yesterday
0 cm
To the Adjustments line
0.72 mline at 400.23 m
At this week's pace
rising

Outlook

What the numbers say

The week’s pattern splits the three reservoirs. La Plata is the clear gainer: it has been rising an average of 14.5 cm a day after a flat week before, and the jump came right after the rain on November 8. It is still well short of where it started in August, though, and at this week’s rise the arithmetic puts it in the Watch band in about 11 days, around November 26. Cidra is also rising, but more slowly than the week before, so its climb is easing rather than building.

Carraízo is the one to watch. It has turned from a gain to a slow fall of 2 cm a day, even though 4.41 in of rain fell nearby this week. The rain did little for it: the morning after the heaviest day, the reading rose only 2 cm. It remains in the Safe band with a cushion of 1.14 m above the Watch line. At this week’s pace that line is about 57 days away, around January 10. That is arithmetic, not a forecast, and a few dry or wet days could change it.

What to watch

  • La Plata: whether the rise survives a dry week. This week’s gain came with 1.12 in of rain nearby.
  • Cidra: whether the rise survives a dry week. This week’s gain came with 3.91 in of rain nearby.
  • Naranjito: whether AAA extends its Cedro Arriba plan (the calendar runs through October 31), changes the phase or ends it.

Lake levels

The gauge USGS runs at Carraízo read 40.84 meters at 5:45 AM. The gauge USGS runs at La Plata read 43.25 meters at 5:45 AM. The gauge USGS runs at Cidra read 400.94 meters at 5:45 AM.

The gauges report every quarter hour and their readings are provisional; the bands are measured on AAA’s 5:00 chart.

How we read the data

This is the 86th Daily Water Watch (yesterday’s is here). The levels update every morning on the water page.

Levels: AAA’s daily reservoir chart, November 14. Rain: gauges USGS runs within 12 km of each reservoir. Day counts start August 7, when the metro rotation took effect. Straight-line dates are arithmetic, not forecasts. How we report.

In context

About this analysisOriginal 787daily analysis of AAA's 5 AM reservoir chart, validated daily · Report an error
Cite this

Source: 787daily, “Daily Water Watch: Carraízo Steady at 40.84 m”, Nov 14, 2026, https://787daily.com/news/2026-11-14-daily-water-watch-carraizo-steady-at-40-84-m/

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

Every Daily Water Watch

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Background

About Daily Water Watch

Each morning's reading of the 19 AAA reservoirs: today's level, the day-over-day change, the alert band and the pace to the next line, with metro rationing status.

Published
Daily
Source
AAA's 5 AM reservoir chart, validated daily
Water

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