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Helemano 6 Reservoir, Oahu water level today

Lake in Honolulu County, Hawaii

22.81ft
6.95 m · gauge reading (local datum, not an elevation)
Measured · provisional
Normal for the dateRising
24 hours
▲ 0.44 ft
7 days
▲ 0.26 ft
30 days
▼ 0.45 ft
Normal for Oct 23 ?
23.32 ft

At a glance · Oct 23

About normal

Helemano 6 Reservoir, Oahu is 0.5 ft lower than normal for Oct 23, lower than on this date in 7 of the last 10 years, but still within its normal range.

  • This week↗ Rising 0.26 ft
  • Lowest on record↓ 19.51 ft (2026)

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

Normal for Oct 23Record lowToday22.81 ft

Today compared with past years on Oct 23

Lowest to highest on this date: 19.60–24.54 ftUsual range (10th–90th percentile): 21.55–23.66 ftNormal (25th–75th percentile): 22.65–23.48 ftToday: 22.81 ftToday 22.81 ftMedian 23.32Lowest 19.60Highest 24.5425th75th
Lowest to highest on this date: 19.60–24.54 ftUsual range (10th–90th percentile): 21.55–23.66 ftNormal (25th–75th percentile): 22.65–23.48 ftToday: 22.81 ftToday 22.81 ftMedian 23.32Lowest 19.6025th75th

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 0.26 ft in 7 days and fallen 0.45 ft in 30 days.

Since 2009, the lowest daily level was 19.51 ft (Mar 2026) and the highest 30.87 ft (Mar 2026).

Helemano 6 Reservoir, Oahu level chart

Loading chart…

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

2026 compared with 2025

1922252832JanFebMarAprMayJunJulAugSepOctNovDec202520262025-09-17: 22.55 ft2025-09-22: 23.67 ft2025-09-27: 22.00 ft2025-10-02: 24.31 ft2025-10-07: 23.01 ft2025-10-12: 22.11 ft2025-10-17: 24.43 ft2025-10-22: 22.99 ft2025-10-27: 23.63 ft2025-11-01: 22.69 ft2025-11-06: 23.72 ft2025-11-11: 23.69 ft2025-11-16: 23.45 ft2025-11-21: 23.73 ft2025-11-26: 23.14 ft2025-12-01: 23.85 ft2025-12-06: 23.55 ft2025-12-11: 23.58 ft2025-12-16: 23.65 ft2025-12-21: 24.85 ft2025-12-26: 23.29 ft2025-12-31: 23.86 ft2026-01-05: 24.15 ft2026-01-10: 23.55 ft2026-01-15: 24.29 ft2026-01-20: 23.02 ft2026-01-25: 23.59 ft2026-01-30: 23.69 ft2026-02-04: 22.87 ft2026-02-09: 23.72 ft2026-02-14: 21.58 ft2026-02-19: 23.00 ft2026-02-24: 21.71 ft2026-03-01: 22.61 ft2026-03-06: 22.76 ft2026-03-11: 23.08 ft2026-03-16: 24.14 ft2026-03-21: 26.13 ft2026-03-26: 19.52 ft2026-03-31: 19.52 ft2026-04-05: 19.52 ft2026-04-10: 21.59 ft2026-04-15: 19.75 ft2026-04-20: 19.68 ft2026-04-25: 19.54 ft2026-04-30: 19.54 ft2026-05-05: 20.65 ft2026-05-10: 23.09 ft2026-05-15: 23.45 ft2026-05-20: 22.56 ft2026-05-25: 22.51 ft2026-05-30: 22.50 ft2026-06-04: 22.54 ft2026-06-09: 22.51 ft2026-06-14: 22.41 ft2026-06-19: 23.11 ft2026-06-24: 23.04 ft2026-06-29: 22.98 ft2026-07-04: 22.98 ft2026-07-09: 23.14 ft2026-07-14: 25.67 ft2026-07-19: 24.34 ft2026-07-24: 24.38 ft2026-07-29: 24.30 ft2026-08-03: 24.77 ft2026-08-08: 24.12 ft2026-08-13: 23.87 ft2026-08-18: 22.08 ft2026-08-23: 22.22 ft2026-08-28: 24.39 ft2026-09-02: 24.50 ft2026-09-07: 23.07 ft2026-09-12: 23.89 ft2026-09-17: 23.64 ft2026-09-22: 23.44 ft2026-09-27: 21.47 ft2026-10-02: 22.86 ft2026-10-07: 22.77 ft2026-10-12: 23.11 ft2026-10-17: 22.78 ft
1922252832JanAprJulOct202520262025-09-17: 22.55 ft2025-09-22: 23.67 ft2025-09-27: 22.00 ft2025-10-02: 24.31 ft2025-10-07: 23.01 ft2025-10-12: 22.11 ft2025-10-17: 24.43 ft2025-10-22: 22.99 ft2025-10-27: 23.63 ft2025-11-01: 22.69 ft2025-11-06: 23.72 ft2025-11-11: 23.69 ft2025-11-16: 23.45 ft2025-11-21: 23.73 ft2025-11-26: 23.14 ft2025-12-01: 23.85 ft2025-12-06: 23.55 ft2025-12-11: 23.58 ft2025-12-16: 23.65 ft2025-12-21: 24.85 ft2025-12-26: 23.29 ft2025-12-31: 23.86 ft2026-01-05: 24.15 ft2026-01-10: 23.55 ft2026-01-15: 24.29 ft2026-01-20: 23.02 ft2026-01-25: 23.59 ft2026-01-30: 23.69 ft2026-02-04: 22.87 ft2026-02-09: 23.72 ft2026-02-14: 21.58 ft2026-02-19: 23.00 ft2026-02-24: 21.71 ft2026-03-01: 22.61 ft2026-03-06: 22.76 ft2026-03-11: 23.08 ft2026-03-16: 24.14 ft2026-03-21: 26.13 ft2026-03-26: 19.52 ft2026-03-31: 19.52 ft2026-04-05: 19.52 ft2026-04-10: 21.59 ft2026-04-15: 19.75 ft2026-04-20: 19.68 ft2026-04-25: 19.54 ft2026-04-30: 19.54 ft2026-05-05: 20.65 ft2026-05-10: 23.09 ft2026-05-15: 23.45 ft2026-05-20: 22.56 ft2026-05-25: 22.51 ft2026-05-30: 22.50 ft2026-06-04: 22.54 ft2026-06-09: 22.51 ft2026-06-14: 22.41 ft2026-06-19: 23.11 ft2026-06-24: 23.04 ft2026-06-29: 22.98 ft2026-07-04: 22.98 ft2026-07-09: 23.14 ft2026-07-14: 25.67 ft2026-07-19: 24.34 ft2026-07-24: 24.38 ft2026-07-29: 24.30 ft2026-08-03: 24.77 ft2026-08-08: 24.12 ft2026-08-13: 23.87 ft2026-08-18: 22.08 ft2026-08-23: 22.22 ft2026-08-28: 24.39 ft2026-09-02: 24.50 ft2026-09-07: 23.07 ft2026-09-12: 23.89 ft2026-09-17: 23.64 ft2026-09-22: 23.44 ft2026-09-27: 21.47 ft2026-10-02: 22.86 ft2026-10-07: 22.77 ft2026-10-12: 23.11 ft2026-10-17: 22.78 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, 202523.73 ft▲ 0.92 ft
Oct 23, 202422.41 ft▼ 0.40 ft
Oct 23, 202323.12 ft▲ 0.31 ft
Oct 23, 202223.96 ft▲ 1.15 ft
Oct 23, 202122.60 ft▼ 0.21 ft
Oct 23, 202023.29 ft▲ 0.48 ft
Oct 23, 201923.07 ft▲ 0.26 ft
Oct 23, 201821.99 ft▼ 0.82 ft
Oct 23, 201723.46 ft▲ 0.65 ft
Oct 23, 201623.84 ft▲ 1.03 ft

Records & details

Highest
30.87 ft on Mar 20, 2026
Lowest
19.51 ft on Mar 23, 2026
Records from
2009 (18 years of daily data)
Water temperature
Not measured here

Full history: yearly highs and lows, monthly averages →

Helemano 6 Reservoir

Height
38 ft
Completed
1915
Purposes
Irrigation
Owner
Private
Normal storage
66 acre-ft
Surface area
5 acres

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

Weather & wind

Today83°F · Mostly Sunny
Wind E 1 to 12 mph
Tonight69°F · Partly Cloudy
Wind NNW 2 to 8 mph
Saturday83°F · Mostly Sunny
Wind NNE 3 to 12 mph
Saturday Night69°F · Partly Cloudy
Wind NE 12 mph
Sunday81°F · Scattered Rain Showers then Mostly Sunny
Wind NE 9 mph
Sunday Night68°F · Mostly Clear
Wind ENE 7 mph

NOAA National Weather Service forecast for this lake's location, updated 11 min ago.

Nearby lakes

All Hawaii lake levels →