Country: USA
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Wahiawa Reservoir water level history

Daily records since 2005 · Level today: 54.16 ft

Highest on record
82.96 ft
Mar 20, 2026
Lowest on record
45.91 ft
Jul 8, 2026
Today
54.16 ft
Oct 23, 2026
Years of data
21
since 2005

In short

Across 19 complete years, 2025 had the lowest average level (64.67 ft) and 2006 the highest (75.36 ft).

On average the lake is lowest in October (67.88 ft) and highest in April (70.69 ft).

Wahiawa Reservoir level, all years

Loading chart…

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

Each year's lowest and highest level

4454647585200520082011201420172020202320262005: lowest 71.51 ft (2005-12-31), highest 81.70 ft (2005-10-02), average 77.30 ft, 92 days measured2006: lowest 69.05 ft (2006-12-28), highest 81.87 ft (2006-03-09), average 75.36 ft, 355 days measured2007: lowest 69.46 ft (2007-01-28), highest 80.84 ft (2007-11-05), average 74.20 ft, 339 days measured2008: lowest 68.86 ft (2008-11-14), highest 81.39 ft (2008-02-07), average 74.14 ft, 366 days measured2009: lowest 59.86 ft (2009-10-27), highest 80.58 ft (2009-01-02), average 69.64 ft, 359 days measured2010: lowest 59.89 ft (2010-03-03), highest 80.77 ft (2010-04-08), average 70.33 ft, 365 days measured2011: lowest 56.73 ft (2011-03-03), highest 81.40 ft (2011-05-08), average 73.32 ft, 365 days measured2012: lowest 60.37 ft (2012-12-13), highest 81.97 ft (2012-03-09), average 71.28 ft, 363 days measured2013: lowest 65.10 ft (2013-01-01), highest 81.16 ft (2013-05-29), average 71.56 ft, 363 days measured2014: lowest 63.32 ft (2014-02-27), highest 80.37 ft (2014-07-21), average 68.75 ft, 364 days measured2015: lowest 64.21 ft (2015-03-04), highest 80.81 ft (2015-11-27), average 69.27 ft, 363 days measured2016: lowest 62.23 ft (2016-12-19), highest 80.32 ft (2016-09-15), average 69.48 ft, 358 days measured2017: lowest 62.47 ft (2017-02-27), highest 75.40 ft (2017-06-16), average 66.51 ft, 333 days measured2018: lowest 62.21 ft (2018-04-06), highest 79.25 ft (2018-08-29), average 67.99 ft, 365 days measured2019: lowest 61.68 ft (2019-09-14), highest 73.61 ft (2019-12-26), average 66.17 ft, 336 days measured2020: lowest 58.32 ft (2020-10-20), highest 81.29 ft (2020-01-12), average 66.42 ft, 342 days measured2021: lowest 62.80 ft (2021-11-22), highest 81.13 ft (2021-03-17), average 67.82 ft, 359 days measured2022: lowest 61.51 ft (2022-03-19), highest 80.29 ft (2022-01-04), average 65.50 ft, 311 days measured2023: lowest 59.94 ft (2023-11-19), highest 74.78 ft (2023-12-21), average 65.75 ft, 365 days measured2024: lowest 62.00 ft (2024-01-25), highest 81.28 ft (2024-05-17), average 66.42 ft, 366 days measured2025: lowest 58.62 ft (2025-10-17), highest 71.81 ft (2025-03-18), average 64.67 ft, 365 days measured2026: lowest 45.91 ft (2026-07-08), highest 82.96 ft (2026-03-20), average 65.59 ft, 282 days measured
4454647585200520112017202320262005: lowest 71.51 ft (2005-12-31), highest 81.70 ft (2005-10-02), average 77.30 ft, 92 days measured2006: lowest 69.05 ft (2006-12-28), highest 81.87 ft (2006-03-09), average 75.36 ft, 355 days measured2007: lowest 69.46 ft (2007-01-28), highest 80.84 ft (2007-11-05), average 74.20 ft, 339 days measured2008: lowest 68.86 ft (2008-11-14), highest 81.39 ft (2008-02-07), average 74.14 ft, 366 days measured2009: lowest 59.86 ft (2009-10-27), highest 80.58 ft (2009-01-02), average 69.64 ft, 359 days measured2010: lowest 59.89 ft (2010-03-03), highest 80.77 ft (2010-04-08), average 70.33 ft, 365 days measured2011: lowest 56.73 ft (2011-03-03), highest 81.40 ft (2011-05-08), average 73.32 ft, 365 days measured2012: lowest 60.37 ft (2012-12-13), highest 81.97 ft (2012-03-09), average 71.28 ft, 363 days measured2013: lowest 65.10 ft (2013-01-01), highest 81.16 ft (2013-05-29), average 71.56 ft, 363 days measured2014: lowest 63.32 ft (2014-02-27), highest 80.37 ft (2014-07-21), average 68.75 ft, 364 days measured2015: lowest 64.21 ft (2015-03-04), highest 80.81 ft (2015-11-27), average 69.27 ft, 363 days measured2016: lowest 62.23 ft (2016-12-19), highest 80.32 ft (2016-09-15), average 69.48 ft, 358 days measured2017: lowest 62.47 ft (2017-02-27), highest 75.40 ft (2017-06-16), average 66.51 ft, 333 days measured2018: lowest 62.21 ft (2018-04-06), highest 79.25 ft (2018-08-29), average 67.99 ft, 365 days measured2019: lowest 61.68 ft (2019-09-14), highest 73.61 ft (2019-12-26), average 66.17 ft, 336 days measured2020: lowest 58.32 ft (2020-10-20), highest 81.29 ft (2020-01-12), average 66.42 ft, 342 days measured2021: lowest 62.80 ft (2021-11-22), highest 81.13 ft (2021-03-17), average 67.82 ft, 359 days measured2022: lowest 61.51 ft (2022-03-19), highest 80.29 ft (2022-01-04), average 65.50 ft, 311 days measured2023: lowest 59.94 ft (2023-11-19), highest 74.78 ft (2023-12-21), average 65.75 ft, 365 days measured2024: lowest 62.00 ft (2024-01-25), highest 81.28 ft (2024-05-17), average 66.42 ft, 366 days measured2025: lowest 58.62 ft (2025-10-17), highest 71.81 ft (2025-03-18), average 64.67 ft, 365 days measured2026: lowest 45.91 ft (2026-07-08), highest 82.96 ft (2026-03-20), average 65.59 ft, 282 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.

  • 201156.73 ft on Mar 3
  • 202058.32 ft on Oct 20
  • 202558.62 ft on Oct 17
  • 200959.86 ft on Oct 27
  • 201059.89 ft on Mar 3

Yearly highs and lows

YearAverageLowLow dateHighHigh date
2026 (282 days)65.5945.91Jul 882.96Mar 20
202564.6758.62Oct 1771.81Mar 18
202466.4262.00Jan 2581.28May 17
202365.7559.94Nov 1974.78Dec 21
2022 (311 days)65.5061.51Mar 1980.29Jan 4
202167.8262.80Nov 2281.13Mar 17
202066.4258.32Oct 2081.29Jan 12
201966.1761.68Sep 1473.61Dec 26
201867.9962.21Apr 679.25Aug 29
201766.5162.47Feb 2775.40Jun 16
201669.4862.23Dec 1980.32Sep 15
201569.2764.21Mar 480.81Nov 27
201468.7563.32Feb 2780.37Jul 21
201371.5665.10Jan 181.16May 29
201271.2860.37Dec 1381.97Mar 9
201173.3256.73Mar 381.40May 8
201070.3359.89Mar 380.77Apr 8
200969.6459.86Oct 2780.58Jan 2
200874.1468.86Nov 1481.39Feb 7
200774.2069.46Jan 2880.84Nov 5
200675.3669.05Dec 2881.87Mar 9
2005 (92 days)77.3071.51Dec 3181.70Oct 2

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

Monthly averages

MonthAverageLowestHighest
January69.5561.1681.29
February68.1757.3781.39
March69.7756.7382.96
April70.6962.1881.10
May70.5159.0981.40
June69.8151.7280.62
July68.8445.9180.37
August68.3546.0879.65
September68.5747.2780.73
October67.8846.0381.70
November69.1859.0880.84
December69.3460.3781.35

Download

Daily levels as CSV (7,476 rows; credit the original agencies listed below)