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Reservoirs

Levels for the 19 reservoirs on AAA's daily bulletin

Fajardo

Fajardo

Observation

46.76m

153.41 ft

2.26 m above Operational adjustments

Data as of August 23, 2026 · Reading taken at 5:00 AM

Compared with normal

5.63 m below normal for this date

A ±7-day window around August 23, 2026, this reservoir's own most recent reading.

Percentile 7 across 14 years of record.

Rank 16 of 211 readings from these dates. Rank 1 is the lowest.

The rank counts individual readings, not years.

This reservoir's record is too short to compare against any single year.

Median
52.39 m
Minimum
44.52 m2015
Maximum
52.66 m2022
90th percentile
52.54 m

Level over time

Resolution follows the range: daily up to a year, weekly at five years, monthly across the whole record.

Fajardo: level from July 25, 2026 to August 23, 2026, a net fall of 1.86 m.

August 23, 2026: 46.76 m.

Hover the chart or use the arrow keys to read a point.

From July 25, 2026 to August 23, 2026. Minimum 46.76 m, maximum 48.62 m.

The vertical scale runs from 46.50 m to 49.00 m and does not start at zero: these are metres above sea level.

The dashed lines are the alert bounds AAA publishes today. The record keeps no history of those bounds, so we do not know whether they were the same in the past.

Today the reservoir is in Observation.

4 bounds fall outside this chart’s scale.

Fajardo: level from July 25, 2026 to August 23, 2026, a net fall of 1.86 m.
Datem
July 25, 202648.62
July 26, 202648.54
July 27, 202648.46
July 28, 202648.37
July 29, 202648.28
July 30, 202648.19
July 31, 202648.12
August 1, 202648.01
August 2, 202647.92
August 3, 202647.84
August 4, 202647.75
August 5, 202647.69
August 6, 202647.63
August 7, 202647.58
August 8, 202647.48
August 9, 202647.42
August 10, 202647.43
August 11, 202647.36
August 12, 202647.46
August 13, 202647.49
August 14, 202647.44
August 15, 202647.38
August 16, 202647.29
August 17, 202647.22
August 18, 202647.12
August 19, 202646.96
August 20, 202646.96
August 21, 202646.93
August 22, 202646.82
August 23, 202646.76

Projection

Disabled

This portal does not publish projections yet. Saying when a reservoir would reach its next phase is a claim about the future of a great many people's water, and before publishing one we want the rule for when it may and may not be made written down.

Every August 23 in the record

Compare another date

Hover the dots or use the arrow keys.

1 year of the 15 with a reading on August 23 was below the most recent level.

From 2012 to 2026.

The dashed line is this reservoir’s most recent level: 46.76 m on August 23, 2026.

The vertical scale runs from 40.00 m to 55.00 m and does not start at zero: these are metres above sea level.

Years with no reading on this date are not in the record and are left as empty space on the axis.

Years below the most recent level are marked with a filled dot.

This counts years. The rank in the block above counts readings.

1 year of the 15 with a reading on August 23 was below the most recent level.
Every August 23 in the recordm
201250.36
201351.12
201452.49
201544.71
201652.46
201752.53
201852.51
201952.54
202052.42
202152.38
202252.55
202351.28
202452.41
202551.68
202646.76

When it has been in each phase

Hover the bands or use the arrow keys.

Each band is one run in one phase, since January 1, 2020.

The axis is calendar time, from January 1, 2020 to August 23, 2026. Stretches with no bulletin are left blank.

Current run

26 days in Observation, since July 29, 2026.

The longest run in Observation on record: 117 days, from July 5, 2015 to October 29, 2015.

Counts bulletin days, not calendar days.

Each band is one run in one phase, since January 1, 2020.
PhaseFromToBulletin days
SafetyJanuary 1, 2020January 21, 202021
OverflowJanuary 22, 2020January 22, 20201
SafetyJanuary 23, 2020January 23, 20201
OverflowJanuary 24, 2020January 24, 20201
SafetyJanuary 25, 2020January 27, 20203
OverflowJanuary 28, 2020January 30, 20203
SafetyJanuary 31, 2020February 5, 20206
OverflowFebruary 6, 2020February 7, 20202
SafetyFebruary 8, 2020February 23, 202016
OverflowFebruary 24, 2020February 25, 20202
SafetyFebruary 26, 2020March 5, 20209
OverflowMarch 6, 2020March 12, 20207
SafetyMarch 13, 2020April 8, 202027
OverflowApril 9, 2020April 9, 20201
SafetyApril 10, 2020May 6, 202027
OverflowMay 7, 2020May 8, 20202
SafetyMay 9, 2020May 12, 20204
OverflowMay 13, 2020May 13, 20201
SafetyMay 14, 2020May 14, 20201
OverflowMay 15, 2020May 15, 20201
SafetyMay 16, 2020June 11, 202027
OverflowJune 12, 2020June 12, 20201
SafetyJune 13, 2020June 30, 202018
OverflowJuly 1, 2020July 1, 20201
SafetyJuly 2, 2020July 16, 202015
OverflowJuly 17, 2020July 26, 202010
SafetyJuly 27, 2020July 27, 20201
OverflowJuly 28, 2020July 29, 20202
SafetyJuly 30, 2020August 1, 20203
OverflowAugust 2, 2020August 2, 20201
SafetyAugust 3, 2020August 5, 20203
OverflowAugust 6, 2020August 8, 20203
SafetyAugust 9, 2020August 12, 20204
OverflowAugust 13, 2020August 19, 20207
SafetyAugust 20, 2020August 20, 20201
OverflowAugust 21, 2020August 21, 20201
SafetyAugust 22, 2020August 28, 20207
OverflowAugust 29, 2020September 4, 20207
SafetySeptember 5, 2020September 5, 20201
OverflowSeptember 6, 2020September 8, 20203
SafetySeptember 9, 2020September 9, 20201
OverflowSeptember 10, 2020September 11, 20202
SafetySeptember 12, 2020September 13, 20202
OverflowSeptember 14, 2020September 16, 20203
SafetySeptember 17, 2020September 19, 20203
OverflowSeptember 20, 2020October 2, 202013
SafetyOctober 3, 2020October 4, 20202
OverflowOctober 5, 2020October 6, 20202
SafetyOctober 7, 2020October 11, 20205
OverflowOctober 12, 2020October 15, 20204
SafetyOctober 16, 2020October 16, 20201
OverflowOctober 17, 2020October 17, 20201
SafetyOctober 18, 2020October 20, 20203
OverflowOctober 21, 2020October 29, 20209
SafetyOctober 30, 2020November 2, 20204
OverflowNovember 3, 2020November 10, 20208
SafetyNovember 11, 2020November 11, 20201
OverflowNovember 12, 2020November 12, 20201
SafetyNovember 13, 2020November 17, 20205
OverflowNovember 18, 2020November 20, 20203
SafetyNovember 21, 2020November 24, 20204
OverflowNovember 25, 2020November 25, 20201
SafetyNovember 26, 2020December 2, 20207
OverflowDecember 10, 2020December 11, 20202
SafetyDecember 12, 2020December 15, 20204
OverflowDecember 16, 2020December 18, 20203
SafetyDecember 19, 2020December 23, 20205
OverflowDecember 24, 2020December 27, 20204
SafetyDecember 28, 2020January 18, 202122
OverflowJanuary 19, 2021January 27, 20219
SafetyJanuary 28, 2021February 4, 20218
OverflowFebruary 5, 2021February 6, 20212
SafetyFebruary 7, 2021February 15, 20219
OverflowFebruary 16, 2021February 24, 20219
SafetyFebruary 25, 2021March 30, 202134
OverflowMarch 31, 2021April 4, 20215
SafetyApril 5, 2021April 7, 20213
OverflowApril 8, 2021April 12, 20215
SafetyApril 13, 2021June 22, 202171
OverflowJune 23, 2021July 1, 20219
SafetyJuly 2, 2021July 10, 20219
OverflowJuly 11, 2021July 17, 20217
SafetyJuly 18, 2021July 21, 20214
OverflowJuly 22, 2021July 25, 20214
SafetyJuly 26, 2021July 28, 20213
OverflowJuly 29, 2021July 31, 20213
SafetyAugust 1, 2021August 2, 20212
OverflowAugust 3, 2021August 4, 20212
SafetyAugust 5, 2021August 5, 20211
OverflowAugust 6, 2021August 9, 20214
SafetyAugust 10, 2021August 17, 20218
OverflowAugust 18, 2021August 20, 20213
SafetyAugust 21, 2021August 25, 20215
OverflowAugust 26, 2021August 28, 20213
SafetyAugust 29, 2021September 4, 20217
OverflowSeptember 5, 2021September 7, 20213
SafetySeptember 8, 2021September 8, 20211
OverflowSeptember 9, 2021September 23, 202115
SafetySeptember 24, 2021September 29, 20216
OverflowSeptember 30, 2021October 14, 202115
SafetyOctober 15, 2021October 15, 20211
OverflowOctober 16, 2021October 22, 20217
SafetyOctober 23, 2021October 26, 20214
OverflowOctober 27, 2021October 30, 20214
SafetyOctober 31, 2021November 8, 20219
OverflowNovember 9, 2021November 14, 20216
SafetyNovember 15, 2021November 20, 20216
OverflowNovember 21, 2021November 26, 20216
SafetyNovember 27, 2021December 1, 20215
OverflowDecember 2, 2021December 3, 20212
SafetyDecember 4, 2021December 8, 20215
OverflowDecember 9, 2021December 11, 20213
SafetyDecember 12, 2021December 15, 20214
OverflowDecember 16, 2021December 23, 20218
SafetyDecember 24, 2021December 28, 20215
OverflowDecember 29, 2021December 31, 20213
SafetyJanuary 1, 2022January 6, 20226
OverflowJanuary 7, 2022January 19, 202213
SafetyJanuary 20, 2022February 4, 202216
OverflowFebruary 5, 2022February 20, 202216
SafetyFebruary 21, 2022February 22, 20222
OverflowFebruary 23, 2022February 25, 20223
SafetyFebruary 26, 2022February 28, 20223
OverflowMarch 1, 2022March 12, 202212
SafetyMarch 13, 2022March 15, 20223
OverflowMarch 16, 2022March 22, 20227
SafetyMarch 23, 2022March 24, 20222
OverflowMarch 25, 2022April 5, 202212
SafetyApril 6, 2022April 6, 20221
OverflowApril 7, 2022April 12, 20226
SafetyApril 13, 2022April 20, 20228
OverflowApril 21, 2022April 25, 20225
SafetyApril 26, 2022May 13, 202218
OverflowMay 14, 2022May 19, 20226
SafetyMay 20, 2022May 25, 20226
OverflowMay 26, 2022June 1, 20227
SafetyJune 2, 2022July 14, 202243
OverflowJuly 15, 2022July 23, 20229
SafetyJuly 24, 2022July 30, 20227
OverflowJuly 31, 2022August 7, 20228
SafetyAugust 8, 2022August 8, 20221
OverflowAugust 9, 2022August 10, 20222
SafetyAugust 11, 2022August 11, 20221
OverflowAugust 12, 2022August 12, 20221
SafetyAugust 13, 2022August 20, 20228
OverflowAugust 21, 2022September 3, 202214
SafetySeptember 4, 2022September 6, 20223
OverflowSeptember 7, 2022September 8, 20222
SafetySeptember 9, 2022September 18, 202210
OverflowSeptember 19, 2022September 20, 20222
SafetySeptember 21, 2022September 23, 20223
OverflowSeptember 24, 2022October 1, 20228
SafetyOctober 2, 2022October 4, 20223
OverflowOctober 5, 2022October 14, 202210
SafetyOctober 15, 2022October 17, 20223
OverflowOctober 18, 2022October 25, 20228
SafetyOctober 26, 2022October 27, 20222
OverflowOctober 28, 2022October 28, 20221
SafetyOctober 29, 2022October 31, 20223
OverflowNovember 1, 2022November 13, 202213
SafetyNovember 14, 2022November 14, 20221
OverflowNovember 15, 2022November 17, 20223
SafetyNovember 18, 2022November 20, 20223
OverflowNovember 21, 2022December 3, 202213
SafetyDecember 4, 2022December 6, 20223
OverflowDecember 7, 2022December 19, 202213
SafetyDecember 20, 2022January 7, 202319
OverflowJanuary 8, 2023January 10, 20233
SafetyJanuary 11, 2023January 20, 202310
OverflowJanuary 21, 2023January 27, 20237
SafetyJanuary 28, 2023February 5, 20239
OverflowFebruary 6, 2023March 2, 202325
SafetyMarch 3, 2023September 11, 2023193
OverflowSeptember 12, 2023September 13, 20232
SafetySeptember 14, 2023September 14, 20231
OverflowSeptember 15, 2023September 16, 20232
SafetySeptember 17, 2023September 21, 20235
OverflowSeptember 22, 2023October 20, 202329
SafetyOctober 21, 2023October 24, 20234
OverflowOctober 25, 2023November 5, 202312
SafetyNovember 6, 2023November 6, 20231
OverflowNovember 7, 2023November 9, 20233
SafetyNovember 10, 2023November 25, 202316
OverflowNovember 26, 2023December 23, 202328
SafetyDecember 24, 2023January 11, 202419
OverflowJanuary 12, 2024February 1, 202421
SafetyFebruary 2, 2024February 9, 20248
OverflowFebruary 10, 2024March 6, 202426
SafetyMarch 7, 2024March 15, 20249
OverflowMarch 16, 2024March 23, 20248
SafetyMarch 24, 2024May 18, 202456
OverflowMay 19, 2024May 25, 20247
SafetyMay 26, 2024June 1, 20247
OverflowJune 2, 2024June 8, 20247
SafetyJune 9, 2024June 11, 20243
OverflowJune 12, 2024July 2, 202421
SafetyJuly 3, 2024July 8, 20246
OverflowJuly 9, 2024August 12, 202435
SafetyAugust 13, 2024September 4, 202423
OverflowSeptember 5, 2024October 7, 202433
SafetyOctober 8, 2024October 14, 20247
OverflowOctober 15, 2024October 24, 202410
SafetyOctober 25, 2024October 30, 20246
OverflowOctober 31, 2024November 2, 20243
SafetyNovember 3, 2024November 10, 20248
OverflowNovember 11, 2024November 15, 20245
SafetyNovember 16, 2024November 28, 202413
OverflowNovember 29, 2024December 4, 20246
SafetyDecember 5, 2024December 13, 20249
OverflowDecember 14, 2024December 22, 20249
SafetyDecember 23, 2024January 9, 202518
OverflowJanuary 10, 2025January 15, 20256
SafetyJanuary 16, 2025January 24, 20259
OverflowJanuary 25, 2025January 29, 20255
SafetyJanuary 30, 2025February 9, 202511
OverflowFebruary 10, 2025February 13, 20254
SafetyFebruary 14, 2025February 27, 202514
OverflowFebruary 28, 2025March 5, 20256
SafetyMarch 6, 2025March 9, 20254
OverflowMarch 10, 2025March 18, 20259
SafetyMarch 19, 2025March 26, 20258
OverflowMarch 27, 2025April 2, 20257
SafetyApril 3, 2025April 12, 202510
OverflowApril 13, 2025April 18, 20256
SafetyApril 19, 2025April 26, 20258
OverflowApril 27, 2025April 30, 20254
SafetyMay 1, 2025May 7, 20257
OverflowMay 8, 2025May 10, 20253
SafetyMay 11, 2025May 13, 20253
OverflowMay 14, 2025May 15, 20252
SafetyMay 16, 2025May 16, 20251
OverflowMay 17, 2025May 21, 20255
SafetyMay 22, 2025July 1, 202541
OverflowJuly 2, 2025July 13, 202512
SafetyJuly 14, 2025July 14, 20251
OverflowJuly 15, 2025July 15, 20251
SafetyJuly 16, 2025July 16, 20251
OverflowJuly 17, 2025July 19, 20253
SafetyJuly 20, 2025July 27, 20258
OverflowJuly 28, 2025July 30, 20253
SafetyJuly 31, 2025August 3, 20254
OverflowAugust 4, 2025August 12, 20259
SafetyAugust 13, 2025November 29, 2025109
OverflowNovember 30, 2025December 22, 202523
SafetyDecember 23, 2025January 24, 202633
OverflowJanuary 25, 2026February 5, 202612
SafetyFebruary 6, 2026March 11, 202634
OverflowMarch 12, 2026April 2, 202622
SafetyApril 3, 2026July 28, 2026117
ObservationJuly 29, 2026August 23, 202626

How we read the data

Every figure on this portal is the 5:00 AM AST reading from the USGS gauge, every day, at every reservoir. AAA's daily bulletin is drawn at 4:55 AM and carries the freshest reading that had arrived by press time; the gauges transmit once an hour, and the 5:00 AM reading is published around 5:57 AM. On days when levels move quickly the two figures can therefore differ by about a centimetre. Each is correct for its own cut-off. Ours holds the same 24-hour interval every day, which is what makes our day-over-day changes directly comparable to one another.

We read the same USGS gauges that underpin the bulletin. The alert phases (Overflow, Safety, Observation, Operational adjustments, Control) are the thresholds AAA publishes for each reservoir; AAA prints them in Spanish, as Desborde, Seguridad, Observación, Ajustes and Control.

Source

Data: U.S. Geological Survey (USGS)

Provisional data

Provisional data: values are preliminary, have not been reviewed or approved by the U.S. Geological Survey, and are subject to revision or removal as the record is finalized. Do not use them for decisions involving personal or public safety, or property.

Daily reservoir level bulletin: Autoridad de Acueductos y Alcantarillados de Puerto Rico.

This portal is not an official channel of the Autoridad de Acueductos y Alcantarillados. For service notices, consult AAA.