Lake Garzas Water Level
Lago Garzas · Adjuntas, Puerto Rico · operated by Puerto Rico Electric Power Authority (PREPA/AEE)
Water level
736.05 m
above mean sea level · 2026-08-08
SafetyAt 736.05 m, Lake Garzas is close to its seasonal norm for August, sitting above 46.4% of August days recorded since 1993.
Recorded range
724.85 – 736.7 m
Position in range
94.5%
Seasonal percentile
46.4%
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.
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
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.