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Kemoo 5 Reservoir, Oahu water level history

Daily records since 2015 · Level today: 14.68 ft

Highest on record
20.81 ft
Mar 10, 2019
Lowest on record
12.56 ft
Dec 18, 2025
Today
14.68 ft
Oct 23, 2026
Years of data
11
since 2015

In short

Across 10 complete years, 2025 had the lowest average level (14.97 ft) and 2019 the highest (18.96 ft).

On average the lake is lowest in October (16.45 ft) and highest in May (17.41 ft).

Kemoo 5 Reservoir, Oahu level, all years

Loading chart…

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

Each year's lowest and highest level

121417192120152017201920212023202520262015: lowest 12.70 ft (2015-07-23), highest 19.39 ft (2015-08-26), average 16.18 ft, 162 days measured2016: lowest 13.39 ft (2016-10-11), highest 18.51 ft (2016-05-31), average 15.77 ft, 366 days measured2017: lowest 14.46 ft (2017-01-05), highest 19.23 ft (2017-10-03), average 17.22 ft, 365 days measured2018: lowest 13.15 ft (2018-11-12), highest 20.78 ft (2018-07-29), average 18.22 ft, 365 days measured2019: lowest 16.58 ft (2019-12-31), highest 20.81 ft (2019-03-10), average 18.96 ft, 337 days measured2020: lowest 16.03 ft (2020-07-14), highest 19.67 ft (2020-03-12), average 17.87 ft, 366 days measured2021: lowest 16.28 ft (2021-12-14), highest 19.26 ft (2021-02-26), average 17.86 ft, 365 days measured2022: lowest 14.10 ft (2022-08-07), highest 18.94 ft (2022-04-01), average 17.26 ft, 363 days measured2023: lowest 15.52 ft (2023-11-21), highest 17.45 ft (2023-01-02), average 16.45 ft, 351 days measured2024: lowest 15.52 ft (2024-08-26), highest 18.31 ft (2024-05-18), average 16.21 ft, 366 days measured2025: lowest 12.56 ft (2025-12-18), highest 17.54 ft (2025-02-17), average 14.97 ft, 353 days measured2026: lowest 12.56 ft (2026-06-11), highest 18.37 ft (2026-03-14), average 14.07 ft, 291 days measured
1214171921201520182021202420262015: lowest 12.70 ft (2015-07-23), highest 19.39 ft (2015-08-26), average 16.18 ft, 162 days measured2016: lowest 13.39 ft (2016-10-11), highest 18.51 ft (2016-05-31), average 15.77 ft, 366 days measured2017: lowest 14.46 ft (2017-01-05), highest 19.23 ft (2017-10-03), average 17.22 ft, 365 days measured2018: lowest 13.15 ft (2018-11-12), highest 20.78 ft (2018-07-29), average 18.22 ft, 365 days measured2019: lowest 16.58 ft (2019-12-31), highest 20.81 ft (2019-03-10), average 18.96 ft, 337 days measured2020: lowest 16.03 ft (2020-07-14), highest 19.67 ft (2020-03-12), average 17.87 ft, 366 days measured2021: lowest 16.28 ft (2021-12-14), highest 19.26 ft (2021-02-26), average 17.86 ft, 365 days measured2022: lowest 14.10 ft (2022-08-07), highest 18.94 ft (2022-04-01), average 17.26 ft, 363 days measured2023: lowest 15.52 ft (2023-11-21), highest 17.45 ft (2023-01-02), average 16.45 ft, 351 days measured2024: lowest 15.52 ft (2024-08-26), highest 18.31 ft (2024-05-18), average 16.21 ft, 366 days measured2025: lowest 12.56 ft (2025-12-18), highest 17.54 ft (2025-02-17), average 14.97 ft, 353 days measured2026: lowest 12.56 ft (2026-06-11), highest 18.37 ft (2026-03-14), average 14.07 ft, 291 days measured
Lowest to highest that yearYear average2026 so far

One bar per year from the lowest to the highest daily level, with the year's average. Years with no bar have no daily record in the agency archive.

Lowest years

Years ranked by their lowest daily level.

  • 202512.56 ft on Dec 18
  • 201813.15 ft on Nov 12
  • 201613.39 ft on Oct 11
  • 202214.10 ft on Aug 7
  • 201714.46 ft on Jan 5

Yearly highs and lows

YearAverageLowLow dateHighHigh date
2026 (291 days)14.0712.56Jun 1118.37Mar 14
202514.9712.56Dec 1817.54Feb 17
202416.2115.52Aug 2618.31May 18
202316.4515.52Nov 2117.45Jan 2
202217.2614.10Aug 718.94Apr 1
202117.8616.28Dec 1419.26Feb 26
202017.8716.03Jul 1419.67Mar 12
201918.9616.58Dec 3120.81Mar 10
201818.2213.15Nov 1220.78Jul 29
201717.2214.46Jan 519.23Oct 3
201615.7713.39Oct 1118.51May 31
2015 (162 days)16.1812.70Jul 2319.39Aug 26

Levels in feet. Partial years show the number of days with data.

Monthly averages

MonthAverageLowestHighest
January16.5212.5718.70
February17.2814.7820.21
March17.3812.7420.81
April16.9212.5720.66
May17.4112.5720.60
June16.9912.5620.30
July16.6412.5720.78
August16.5812.5720.43
September16.6412.5719.15
October16.4512.5719.27
November16.5812.5720.08
December16.5612.5619.73

Download

Daily levels as CSV (4,050 rows; credit the original agencies listed below)