Lake Dos Bocas Water Level
Lago Dos Bocas · Arecibo, Puerto Rico · operated by Puerto Rico Electric Power Authority (PREPA/AEE)
Water level
90.17 m
above mean sea level · 2026-11-08
OverflowAt 90.17 m, Lake Dos Bocas is above its seasonal norm — higher than 91.5% of all November days recorded since 1999.
Recorded range
84.07 – 92.8 m
Position in range
69.9%
Seasonal percentile
91.5%
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.
Drought context
Puerto Rico drought →U.S. Drought Monitor
Noneno 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 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
On the map
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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.