Guajataca Dam
Dam in Isabela County, Puerto Rico · Guajataca River · forms Lago Guajataca
Height
120 ft
37 m (NID height)
Length
984 ft
300 m
Completed
1927
Lago Guajataca today
644.09 ft
7 days ▼ 0.07 ft
Normal storage
32,600 acre-ft
Much above normal for the date
Reservoir level measured Oct 23, 2026, 2:45 PM AST. Full level page →
Facts
- Purposes
- Hydroelectric; Irrigation; Water Supply
- Dam type
- Earth
- Structural height
- 120 ft
- Owner
- PUERTO RICO ELECTRIC POWER AUTHORITY (Public Utility)
- Maximum storage
- 49,200 acre-ft
- Surface area
- 1,000 acres
- Hydraulic height
- 116 ft
- Drainage area
- 30 sq mi
- Spillway
- Uncontrolled, 646 ft wide
- Army Corps district
- Jacksonville District
- Also known as
- Lago Guajataca
- NID ID
- PR00001
Facts from the U.S. Army Corps of Engineers National Inventory of Dams, record updated Oct 6, 2026. Search NID ID PR00001 at nid.sec.usace.army.mil. Project website.