Lake Lucchetti Water Level
Lago Luchetti · Yauco, Puerto Rico · operated by Puerto Rico Electric Power Authority (PREPA/AEE)
Water level
171.16 m
above mean sea level · 2026-08-08
SafetyAt 171.16 m, Lake Lucchetti is above its seasonal norm — higher than 77.8% of all August days recorded since 1990.
Recorded range
156.11 – 174.89 m
Position in range
80.1%
Seasonal percentile
77.8%
Record since
1990
Official operating levels (PREPA)
Overflow
173.74 m
Safety
170.69 m
Observation
168.86 m
Adjustments
167.03 m
Control
165.51 m
Out of service
164.29 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 1990 (156.11 m to 174.89 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
18.23 hm³
National Inventory of Dams
USGS gauge
50125780
Daily values, 15-minute source data
Municipality
Yauco
South 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.