Lake Guajataca Water Level
Lago Guajataca · Quebradillas, Puerto Rico · operated by Puerto Rico Electric Power Authority (PREPA/AEE)
Water level
196.01 m
above mean sea level · 2026-08-08
SafetyAt 196.01 m, Lake Guajataca is above its seasonal norm — higher than 93.2% of all August days recorded since 1995.
Recorded range
185.36 – 199.51 m
Position in range
75.3%
Seasonal percentile
93.2%
Record since
1995
Official operating levels (PREPA)
Overflow
196.50 m
Safety
194.00 m
Observation
188.00 m
Adjustments
185.50 m
Control
185.00 m
Out of service
184.00 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 1995 (185.36 m to 199.51 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
40.21 hm³
National Inventory of Dams
USGS gauge
50010800
Daily values, 15-minute source data
Municipality
Quebradillas
North 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.