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Reservoirs

Levels for the 19 reservoirs on AAA's daily bulletin

Garzas

Adjuntas

Safety

735.98m

2,414.63 ft

2.94 m above Observation

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

Compared with normal

0.08 m below normal for this date

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

Percentile 34 across 32 years of record.

Rank 158 of 457 readings from these dates. Rank 1 is the lowest.

The rank counts individual readings, not years.

Most recent year lower on this date: 2024.

Median
736.06 m
Minimum
720.82 m1988
Maximum
736.49 m2014
90th percentile
736.10 m

Level over time

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

Garzas: level from July 25, 2026 to August 23, 2026, a net rise of 0.06 m.

August 23, 2026: 735.98 m.

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

From July 25, 2026 to August 23, 2026. Minimum 735.92 m, maximum 736.08 m.

The vertical scale runs from 735.90 m to 736.10 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 Safety.

4 bounds fall outside this chart’s scale.

Garzas: level from July 25, 2026 to August 23, 2026, a net rise of 0.06 m.
Datem
July 25, 2026735.92
July 26, 2026735.95
July 27, 2026735.99
July 28, 2026736.02
July 29, 2026735.99
July 30, 2026736.02
July 31, 2026736.05
August 1, 2026736.06
August 2, 2026736.06
August 3, 2026736.06
August 4, 2026736.02
August 5, 2026736.07
August 6, 2026735.96
August 7, 2026735.99
August 8, 2026736.02
August 9, 2026736.05
August 10, 2026736.06
August 11, 2026736.06
August 12, 2026736.06
August 13, 2026736.08
August 14, 2026736.06
August 15, 2026736.02
August 16, 2026736.05
August 17, 2026736.06
August 18, 2026736.06
August 19, 2026735.99
August 20, 2026735.95
August 21, 2026735.92
August 22, 2026735.95
August 23, 2026735.98

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.

12 years of the 31 with a reading on August 23 were below the most recent level.

From 1988 to 2026.

The dashed line is this reservoir’s most recent level: 735.98 m on August 23, 2026.

The vertical scale runs from 720.00 m to 740.00 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.

12 years of the 31 with a reading on August 23 were below the most recent level.
Every August 23 in the recordm
1988720.82
1993736.02
1995731.73
1996735.99
1998736.03
2000735.43
2001732.32
2002736.08
2003736.06
2004735.60
2006735.69
2007736.01
2008735.60
2009735.64
2010736.10
2011736.25
2012735.96
2013736.10
2014736.38
2015736.07
2016736.08
2017736.10
2018736.09
2019735.97
2020735.71
2021735.87
2022736.07
2023736.06
2024736.04
2025736.06
2026735.98

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

91 days in Safety, since May 25, 2026.

The longest run in Safety on record: 433 days, from April 30, 2006 to July 22, 2007.

Counts bulletin days, not calendar days.

Each band is one run in one phase, since January 1, 2020.
PhaseFromToBulletin days
SafetyJanuary 1, 2020February 22, 202053
ObservationFebruary 23, 2020February 25, 20203
SafetyFebruary 26, 2020July 30, 2020155
OverflowJuly 31, 2020August 3, 20204
SafetyAugust 4, 2020August 31, 202028
OverflowSeptember 1, 2020September 4, 20204
SafetySeptember 5, 2020September 12, 20208
OverflowSeptember 13, 2020September 13, 20201
SafetySeptember 14, 2020September 27, 202014
OverflowSeptember 28, 2020September 29, 20202
SafetySeptember 30, 2020October 5, 20206
OverflowOctober 6, 2020October 7, 20202
SafetyOctober 8, 2020October 14, 20207
OverflowOctober 15, 2020October 15, 20201
SafetyOctober 16, 2020October 18, 20203
OverflowOctober 19, 2020October 19, 20201
SafetyOctober 20, 2020November 12, 202024
OverflowNovember 13, 2020November 15, 20203
SafetyNovember 16, 2020November 19, 20204
OverflowNovember 20, 2020November 20, 20201
SafetyNovember 21, 2020November 22, 20202
OverflowNovember 23, 2020November 30, 20208
SafetyDecember 1, 2020June 26, 2021208
OverflowJune 27, 2021June 27, 20211
SafetyJune 28, 2021October 13, 2021108
OverflowOctober 14, 2021October 14, 20211
SafetyOctober 15, 2021October 17, 20213
OverflowOctober 18, 2021October 25, 20218
SafetyOctober 26, 2021November 13, 202119
OverflowNovember 14, 2021November 14, 20211
SafetyNovember 15, 2021March 5, 2022110
OverflowMarch 6, 2022March 6, 20221
SafetyMarch 7, 2022August 20, 2022167
OverflowAugust 21, 2022August 21, 20221
SafetyAugust 22, 2022September 18, 202228
OverflowSeptember 19, 2022October 6, 202218
SafetyOctober 7, 2022October 8, 20222
OverflowOctober 9, 2022November 29, 202252
SafetyNovember 30, 2022December 2, 20223
OverflowDecember 3, 2022December 3, 20221
SafetyDecember 4, 2022January 15, 202343
OverflowJanuary 16, 2023January 16, 20231
SafetyJanuary 17, 2023May 21, 2023125
OverflowMay 22, 2023May 22, 20231
SafetyMay 23, 2023July 8, 202347
OverflowJuly 9, 2023July 9, 20231
SafetyJuly 10, 2023August 25, 202347
OverflowAugust 26, 2023August 28, 20233
SafetyAugust 29, 2023September 9, 202312
OverflowSeptember 10, 2023September 10, 20231
SafetySeptember 11, 2023September 18, 20238
OverflowSeptember 19, 2023September 19, 20231
SafetySeptember 20, 2023September 28, 20239
OverflowSeptember 29, 2023September 29, 20231
SafetySeptember 30, 2023October 4, 20235
OverflowOctober 5, 2023October 5, 20231
SafetyOctober 6, 2023October 17, 202312
OverflowOctober 18, 2023October 18, 20231
SafetyOctober 19, 2023October 22, 20234
OverflowOctober 23, 2023October 23, 20231
SafetyOctober 24, 2023October 27, 20234
OverflowOctober 28, 2023October 30, 20233
SafetyOctober 31, 2023November 1, 20232
OverflowNovember 2, 2023November 2, 20231
SafetyNovember 3, 2023November 9, 20237
OverflowNovember 10, 2023November 10, 20231
SafetyNovember 11, 2023November 25, 202315
OverflowNovember 26, 2023November 26, 20231
SafetyNovember 27, 2023February 7, 202473
OverflowFebruary 8, 2024February 8, 20241
SafetyFebruary 9, 2024April 18, 202470
OverflowApril 19, 2024April 19, 20241
SafetyApril 20, 2024April 23, 20244
OverflowApril 24, 2024April 24, 20241
SafetyApril 25, 2024May 6, 202412
OverflowMay 7, 2024May 24, 202418
SafetyMay 25, 2024May 25, 20241
OverflowMay 26, 2024May 31, 20246
SafetyJune 1, 2024June 3, 20243
OverflowJune 4, 2024June 4, 20241
SafetyJune 5, 2024June 5, 20241
OverflowJune 6, 2024June 6, 20241
SafetyJune 7, 2024June 22, 202416
OverflowJune 23, 2024June 23, 20241
SafetyJune 24, 2024June 28, 20245
OverflowJune 29, 2024June 29, 20241
SafetyJune 30, 2024July 31, 202432
OverflowAugust 1, 2024August 1, 20241
SafetyAugust 2, 2024August 13, 202412
OverflowAugust 14, 2024August 16, 20243
SafetyAugust 17, 2024September 8, 202423
OverflowSeptember 9, 2024September 10, 20242
SafetySeptember 11, 2024September 28, 202418
OverflowSeptember 29, 2024September 29, 20241
SafetySeptember 30, 2024September 30, 20241
OverflowOctober 1, 2024October 1, 20241
SafetyOctober 2, 2024October 3, 20242
OverflowOctober 4, 2024October 4, 20241
SafetyOctober 5, 2024October 6, 20242
OverflowOctober 7, 2024October 9, 20243
SafetyOctober 10, 2024October 29, 202420
OverflowOctober 30, 2024October 30, 20241
SafetyOctober 31, 2024November 10, 202411
OverflowNovember 11, 2024November 11, 20241
SafetyNovember 12, 2024November 14, 20243
OverflowNovember 15, 2024November 18, 20244
SafetyNovember 19, 2024December 8, 202420
OverflowDecember 9, 2024December 9, 20241
SafetyDecember 10, 2024December 25, 202416
OverflowDecember 26, 2024December 26, 20241
SafetyDecember 27, 2024December 27, 20241
OverflowDecember 28, 2024December 28, 20241
SafetyDecember 29, 2024April 29, 2025122
OverflowApril 30, 2025May 13, 202514
SafetyMay 14, 2025May 14, 20251
OverflowMay 15, 2025May 15, 20251
SafetyMay 16, 2025May 16, 20251
OverflowMay 17, 2025May 19, 20253
SafetyMay 20, 2025May 23, 20254
OverflowMay 24, 2025May 24, 20251
SafetyMay 25, 2025August 16, 202584
OverflowAugust 17, 2025August 17, 20251
SafetyAugust 18, 2025August 18, 20251
OverflowAugust 19, 2025August 19, 20251
SafetyAugust 20, 2025September 23, 202535
OverflowSeptember 24, 2025September 29, 20256
SafetySeptember 30, 2025October 24, 202525
OverflowOctober 25, 2025October 25, 20251
SafetyOctober 26, 2025November 1, 20257
OverflowNovember 2, 2025November 2, 20251
SafetyNovember 3, 2025January 10, 202669
OverflowJanuary 11, 2026January 11, 20261
SafetyJanuary 12, 2026January 12, 20261
OverflowJanuary 13, 2026January 13, 20261
SafetyJanuary 14, 2026February 1, 202619
OverflowFebruary 2, 2026February 5, 20264
SafetyFebruary 6, 2026February 14, 20269
OverflowFebruary 15, 2026February 16, 20262
SafetyFebruary 17, 2026February 17, 20261
OverflowFebruary 18, 2026February 18, 20261
SafetyFebruary 19, 2026March 24, 202634
OverflowMarch 25, 2026March 25, 20261
SafetyMarch 26, 2026March 28, 20263
OverflowMarch 29, 2026March 29, 20261
SafetyMarch 30, 2026April 1, 20263
OverflowApril 2, 2026April 3, 20262
SafetyApril 4, 2026April 4, 20261
OverflowApril 5, 2026April 5, 20261
SafetyApril 6, 2026April 11, 20266
OverflowApril 12, 2026April 12, 20261
SafetyApril 13, 2026April 13, 20261
OverflowApril 14, 2026April 15, 20262
SafetyApril 16, 2026April 17, 20262
OverflowApril 18, 2026April 19, 20262
SafetyApril 20, 2026April 21, 20262
OverflowApril 22, 2026April 22, 20261
SafetyApril 23, 2026April 30, 20268
OverflowMay 1, 2026May 1, 20261
SafetyMay 2, 2026May 22, 202621
OverflowMay 23, 2026May 24, 20262
SafetyMay 25, 2026August 23, 202691

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.