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Reservoir levels

Reservoir map

Every reservoir where it actually sits, with NWS radar over it.

19 of 19 reservoirs reporting

All 19 in the detailed view

Reservoirs

19 of 19 reservoirs reporting
Base map
Layer

Our own base map · Protomaps + OpenStreetMap · NOAA/NWS nowCOAST

AAA alert phases

  • Overflow — At capacity; the excess leaves over the spillway.
  • Safety — Normal operating level.
  • Observation — Below the safety mark; under monitoring.
  • Operational adjustments — AAA reduces withdrawal to stretch the reserve.
  • Control — Critical level.
  • Out of service — Below the point of reliable withdrawal.

Tap a reservoir on the map

12Safety4Observation3Operational adjustments
Detailed view
All 19, in text. The same reservoirs the map shows, as a table: name, municipality, phase in words, level and share of its operating range. Phase and level come from the most recent reading; the 24-hour change is measured between bulletins.
ReservoirMunicipalityPhaseMost recent level5:00 AM bulletin levelPercent of range24-hour change
CarraízoTrujillo AltoOperational adjustments37.15 mTaken at 5:45 AM37.14 m65%+0.07 m
La PlataComeríoOperational adjustments44.66 mTaken at 6:45 AM44.66 m69%-0.05 m
CidraCidraOperational adjustments400.06 mTaken at 5:45 AM; it is also the August 31, 2026 AAA official bulletin figureNo data61%+0.04 m
Toa VacaVillalbaSafety147.11 mTaken at 6:15 AM; it is also the August 31, 2026 AAA official bulletin figureNo data59%0.00 m
Río BlancoNaguaboObservation24.50 mTaken at 6:30 AM24.49 m51%+0.20 m
FajardoFajardoObservation46.40 mTaken at 6:30 AM; it is also the August 31, 2026 AAA official bulletin figureNo data63%+0.16 m
CariteGuayamaSafety541.71 mTaken at 6:15 AM541.70 m89%+0.02 m
PatillasPatillasSafety63.38 mTaken at 5:45 AM63.36 m79%+0.05 m
El GuineoOrocovisSafety901.53 mTaken at 5:45 AM901.53 m92%+0.04 m
MatrullasOrocovisSafety733.16 mTaken at 5:45 AM733.16 m64%+0.04 m
GuayabalJuana DíazObservation102.50 mTaken at 5:50 AM102.50 m74%+0.11 m
GarzasAdjuntasSafety736.06 mTaken at 5:45 AM736.07 m100%+0.02 m
GuayoLaresSafety442.72 mTaken at 5:45 AM442.72 m72%+0.05 m
LucchettiYaucoSafety170.99 mTaken at 5:45 AM170.99 m67%-0.01 m
LocoYaucoObservation69.32 mTaken at 5:45 AM69.33 m74%-0.05 m
Dos BocasAreciboSafety89.68 mTaken at 5:45 AM89.68 m97%+0.02 m
CaonillasUtuadoSafety250.53 mTaken at 5:45 AM; it is also the August 31, 2026 AAA official bulletin figureNo data91%+0.05 m
GuajatacaQuebradillasSafety195.89 mTaken at 5:45 AM195.89 m95%+0.02 m
CerrillosPonceSafety167.26 mTaken at 5:45 AM167.26 m80%0.00 m