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Lago Regulador de Isabela water level today

Lake in Isabela Municipio, Puerto Rico

521.00ft
158.80 m · LMSL
Measured · provisional
Much below normal for the dateSteady
24 hours
▲ 0.01 ft
7 days
▲ 0.39 ft
30 days
▼ 4.14 ft
Normal for Oct 23 ?
526.97 ft

At a glance · Oct 23

Much lower than usual

Lago Regulador de Isabela is 6.0 ft lower than normal for Oct 23, lower than on this date in 7 of the last 10 years.

  • This week↗ Rising 0.39 ft
  • Lowest on record↓ 513.09 ft (2013)

Compared with this gauge's own records for the same date. A statistical guide, not advice.

Normal for Oct 23Record lowToday521.00 ft

Today compared with past years on Oct 23

Lowest to highest on this date: 516.63–532.28 ftUsual range (10th–90th percentile): 521.10–531.23 ftNormal (25th–75th percentile): 523.51–530.64 ftToday: 521.00 ftToday 521.00 ftMedian 526.97Lowest 516.63Highest 532.2825th75th
Lowest to highest on this date: 516.63–532.28 ftUsual range (10th–90th percentile): 521.10–531.23 ftNormal (25th–75th percentile): 523.51–530.64 ftToday: 521.00 ftToday 521.00 ftMedian 526.97Lowest 516.6325th75th

Where today's reading sits among this gauge's own records for the same date (±3 days). A statistical guide, not advice.

What this means

It is lower than on Oct 23 in 7 of the last 10 years.

The lake has risen 0.39 ft in 7 days and fallen 4.14 ft in 30 days.

Since 2004, the lowest daily level was 513.09 ft (Aug 2013) and the highest 533.10 ft (Oct 2018).

Lago Regulador de Isabela level chart

Loading chart…

Measured Normal range for the date (middle 50% of past years)

2026 compared with 2025

515519524528533JanFebMarAprMayJunJulAugSepOctNovDec202520262025-09-18: 523.98 ft2025-09-23: 523.12 ft2025-09-28: 523.60 ft2025-10-03: 522.94 ft2025-10-08: 522.49 ft2025-10-13: 522.68 ft2025-10-18: 523.84 ft2025-10-23: 522.58 ft2025-10-28: 519.54 ft2025-11-02: 519.95 ft2025-11-07: 519.01 ft2025-11-12: 518.07 ft2025-11-17: 519.48 ft2025-11-22: 521.42 ft2025-11-27: 521.83 ft2025-12-02: 522.67 ft2025-12-07: 522.85 ft2025-12-12: 519.21 ft2025-12-17: 519.92 ft2025-12-22: 520.00 ft2025-12-27: 519.31 ft2026-01-01: 520.10 ft2026-01-06: 519.79 ft2026-01-11: 519.75 ft2026-01-16: 518.58 ft2026-01-21: 518.22 ft2026-01-26: 517.59 ft2026-01-31: 518.84 ft2026-02-05: 520.78 ft2026-02-10: 522.56 ft2026-02-15: 521.92 ft2026-02-20: 522.02 ft2026-02-25: 522.09 ft2026-03-02: 520.89 ft2026-03-07: 520.29 ft2026-03-12: 519.54 ft2026-03-17: 518.85 ft2026-03-22: 517.18 ft2026-03-27: 518.77 ft2026-04-01: 519.18 ft2026-04-06: 521.49 ft2026-04-11: 523.07 ft2026-04-16: 524.21 ft2026-04-21: 524.56 ft2026-04-26: 523.53 ft2026-05-01: 522.02 ft2026-05-06: 522.40 ft2026-05-11: 520.69 ft2026-05-16: 520.78 ft2026-05-21: 522.73 ft2026-05-26: 522.20 ft2026-05-31: 520.36 ft2026-06-05: 522.15 ft2026-06-10: 522.52 ft2026-06-15: 521.44 ft2026-06-20: 519.00 ft2026-06-25: 517.66 ft2026-06-30: 519.20 ft2026-07-05: 518.19 ft2026-07-10: 516.19 ft2026-07-15: 519.59 ft2026-07-20: 519.60 ft2026-07-25: 519.06 ft2026-07-30: 521.59 ft2026-08-04: 520.61 ft2026-08-09: 520.27 ft2026-08-14: 521.17 ft2026-08-19: 520.57 ft2026-08-24: 520.40 ft2026-08-29: 523.49 ft2026-09-03: 524.29 ft2026-09-08: 524.45 ft2026-09-13: 525.80 ft2026-09-18: 526.20 ft2026-09-23: 525.14 ft2026-09-28: 524.77 ft2026-10-03: 524.03 ft2026-10-08: 521.47 ft2026-10-13: 520.06 ft2026-10-18: 521.42 ft
515519524528533JanAprJulOct202520262025-09-18: 523.98 ft2025-09-23: 523.12 ft2025-09-28: 523.60 ft2025-10-03: 522.94 ft2025-10-08: 522.49 ft2025-10-13: 522.68 ft2025-10-18: 523.84 ft2025-10-23: 522.58 ft2025-10-28: 519.54 ft2025-11-02: 519.95 ft2025-11-07: 519.01 ft2025-11-12: 518.07 ft2025-11-17: 519.48 ft2025-11-22: 521.42 ft2025-11-27: 521.83 ft2025-12-02: 522.67 ft2025-12-07: 522.85 ft2025-12-12: 519.21 ft2025-12-17: 519.92 ft2025-12-22: 520.00 ft2025-12-27: 519.31 ft2026-01-01: 520.10 ft2026-01-06: 519.79 ft2026-01-11: 519.75 ft2026-01-16: 518.58 ft2026-01-21: 518.22 ft2026-01-26: 517.59 ft2026-01-31: 518.84 ft2026-02-05: 520.78 ft2026-02-10: 522.56 ft2026-02-15: 521.92 ft2026-02-20: 522.02 ft2026-02-25: 522.09 ft2026-03-02: 520.89 ft2026-03-07: 520.29 ft2026-03-12: 519.54 ft2026-03-17: 518.85 ft2026-03-22: 517.18 ft2026-03-27: 518.77 ft2026-04-01: 519.18 ft2026-04-06: 521.49 ft2026-04-11: 523.07 ft2026-04-16: 524.21 ft2026-04-21: 524.56 ft2026-04-26: 523.53 ft2026-05-01: 522.02 ft2026-05-06: 522.40 ft2026-05-11: 520.69 ft2026-05-16: 520.78 ft2026-05-21: 522.73 ft2026-05-26: 522.20 ft2026-05-31: 520.36 ft2026-06-05: 522.15 ft2026-06-10: 522.52 ft2026-06-15: 521.44 ft2026-06-20: 519.00 ft2026-06-25: 517.66 ft2026-06-30: 519.20 ft2026-07-05: 518.19 ft2026-07-10: 516.19 ft2026-07-15: 519.59 ft2026-07-20: 519.60 ft2026-07-25: 519.06 ft2026-07-30: 521.59 ft2026-08-04: 520.61 ft2026-08-09: 520.27 ft2026-08-14: 521.17 ft2026-08-19: 520.57 ft2026-08-24: 520.40 ft2026-08-29: 523.49 ft2026-09-03: 524.29 ft2026-09-08: 524.45 ft2026-09-13: 525.80 ft2026-09-18: 526.20 ft2026-09-23: 525.14 ft2026-09-28: 524.77 ft2026-10-03: 524.03 ft2026-10-08: 521.47 ft2026-10-13: 520.06 ft2026-10-18: 521.42 ft
20262025Normal (middle 50% of past years)Usual range (10th–90th percentile)Median

Each year drawn on the same January–December axis, over this gauge's normal range for each date. Hover or tap a point for its value.

Same date in past years

DateLevelvs today
Oct 23, 2025522.58 ft▲ 1.58 ft
Oct 23, 2024527.36 ft▲ 6.36 ft
Oct 23, 2023519.88 ft▼ 1.12 ft
Oct 23, 2022520.62 ft▼ 0.38 ft
Oct 23, 2021526.08 ft▲ 5.08 ft
Oct 23, 2020527.05 ft▲ 6.05 ft
Oct 23, 2019530.30 ft▲ 9.30 ft
Oct 23, 2018531.32 ft▲ 10.32 ft
Oct 23, 2017520.63 ft▼ 0.37 ft
Oct 23, 2016530.89 ft▲ 9.89 ft

Records & details

Highest
533.10 ft on Oct 31, 2018
Lowest
513.09 ft on Aug 8, 2013
Records from
2004 (22 years of daily data)
Water temperature
Not measured here

Full history: yearly highs and lows, monthly averages →

Lago Regulador

Height
40 ft
Completed
1996
Purposes
Water Supply
Owner
PUERTO RICO AQUEDUCT AND SEWER AUTHORITY
Normal storage
399 acre-ft
Surface area
162 acres

National Inventory of Dams (U.S. Army Corps of Engineers).

Weather & wind

Tonight73°F · Clear
Wind ESE 6 mph
Saturday89°F · Mostly Sunny then Showers And Thunderstorms
Wind ESE 5 to 9 mph
Saturday Night73°F · Chance Showers And Thunderstorms then Partly Cloudy
Wind SE 5 mph
Sunday89°F · Chance Showers And Thunderstorms
Wind ESE 2 to 7 mph
Sunday Night73°F · Clear
Wind SE 2 to 7 mph
Monday88°F · Chance Showers And Thunderstorms
Wind E 1 to 7 mph

NOAA National Weather Service forecast for this lake's location, updated 24 min ago.

Nearby lakes

All Puerto Rico lake levels →