Lake Garzas Water Level
Lago Garzas · Adjuntas, Puerto Rico · operated by Puerto Rico Electric Power Authority (PREPA/AEE)
Water level
736.06 m
above mean sea level · 2026-11-06
SafetyAt 736.06 m, Lake Garzas is close to its seasonal norm for November, sitting above 42.6% of November days recorded since 1993.
Recorded range
724.85 – 736.7 m
Position in range
94.6%
Seasonal percentile
42.6%
Record since
1993
Official operating levels (PREPA)
Overflow
736.09 m
Safety
733.04 m
Observation
731.22 m
Adjustments
729.39 m
Control
727.86 m
Out of service
726.64 m
These are the thresholds the Puerto Rico Electric Power Authority publishes for this reservoir. They, not a storage percentage, are what trigger operational adjustments and rationing decisions on the island.
Drought context
Puerto Rico drought →U.S. Drought Monitor
D1Moderate drought
Week of 3 November 2026
Drought figures describe the ground around the reservoir, not its storage. Sources: U.S. Drought Monitor.
The chart plots where the water level sits inside the range this reservoir has recorded since 1993 (724.85 m to 736.7 m). It is a level position, not a share of storage capacity — Puerto Rico does not publish reservoir volume.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
On the map
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Dam and gauge
Design capacity
6.78 hm³
National Inventory of Dams
USGS gauge
50020100
Daily values, 15-minute source data
Municipality
Adjuntas
Central Puerto Rico
Primary use
hydropower
PREPA / AEE
Design capacity is the volume the dam was built to impound, from the US Army Corps of Engineers' National Inventory of Dams. It describes the size of the reservoir — it is not used to compute a fill percentage, because the elevation-to-volume curve needed for that is not published for Puerto Rico.