Lake Dos Bocas Water Level
Lago Dos Bocas · Arecibo, Puerto Rico · operated by Puerto Rico Electric Power Authority (PREPA/AEE)
Water level
89.5 m
above mean sea level · 2026-08-08
SafetyAt 89.5 m, Lake Dos Bocas is close to its seasonal norm for August, sitting above 72.8% of August days recorded since 1999.
Recorded range
84.07 – 92.8 m
Position in range
62.2%
Seasonal percentile
72.8%
Record since
1999
Official operating levels (PREPA)
Overflow
89.92 m
Safety
88.09 m
Observation
86.26 m
Adjustments
84.43 m
Control
82.91 m
Out of service
81.69 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 1999 (84.07 m to 92.8 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
37.52 hm³
National Inventory of Dams
USGS gauge
50027100
Daily values, 15-minute source data
Municipality
Arecibo
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.