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Lake Alan Henry Reservoir water level history

Daily records since 1997 · Level today: 2,209.54 ft

Highest on record
2,229.30 ft
Jul 5, 2010
Lowest on record
2,182.38 ft
Sep 30, 1998
Today
2,209.54 ft
Oct 23, 2026
Years of data
29
since 1997

In short

Across 25 complete years, 2001 had the lowest average level (2,203.57 ft) and 2007 the highest (2,219.97 ft).

On average the lake is lowest in April (2,212.86 ft) and highest in June (2,214.31 ft).

Lake Alan Henry Reservoir level, all years

Loading chart…

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

Each year's lowest and highest level

2,1802,1932,2062,2192,232199720012005200920132017202120261997: lowest 2,183.52 ft (1997-12-19), highest 2,184.37 ft (1997-10-01), average 2,183.88 ft, 87 days measured1998: lowest 2,182.38 ft (1998-09-30), highest 2,184.75 ft (1998-06-13), average 2,183.62 ft, 269 days measured2000: lowest 2,200.57 ft (2000-10-14), highest 2,211.45 ft (2000-10-26), average 2,205.97 ft, 92 days measured2001: lowest 2,202.00 ft (2001-08-22), highest 2,206.80 ft (2001-06-01), average 2,203.57 ft, 348 days measured2002: lowest 2,205.13 ft (2002-03-16), highest 2,208.77 ft (2002-10-30), average 2,206.75 ft, 347 days measured2003: lowest 2,207.25 ft (2003-05-19), highest 2,211.68 ft (2003-09-12), average 2,209.61 ft, 365 days measured2004: lowest 2,210.20 ft (2004-01-11), highest 2,225.94 ft (2004-11-17), average 2,215.62 ft, 366 days measured2005: lowest 2,218.59 ft (2005-12-30), highest 2,222.02 ft (2005-08-17), average 2,219.76 ft, 365 days measured2006: lowest 2,217.50 ft (2006-04-19), highest 2,225.76 ft (2006-10-16), average 2,219.34 ft, 362 days measured2007: lowest 2,218.86 ft (2007-12-09), highest 2,221.74 ft (2007-05-10), average 2,219.97 ft, 365 days measured2008: lowest 2,217.81 ft (2008-06-16), highest 2,225.79 ft (2008-09-13), average 2,219.09 ft, 366 days measured2009: lowest 2,216.92 ft (2009-12-21), highest 2,219.49 ft (2009-01-01), average 2,218.32 ft, 363 days measured2010: lowest 2,216.87 ft (2010-01-26), highest 2,229.30 ft (2010-07-05), average 2,219.27 ft, 365 days measured2011: lowest 2,212.02 ft (2011-12-30), highest 2,218.03 ft (2011-01-01), average 2,214.99 ft, 362 days measured2012: lowest 2,209.70 ft (2012-12-30), highest 2,213.09 ft (2012-06-07), average 2,211.46 ft, 366 days measured2013: lowest 2,205.98 ft (2013-12-20), highest 2,209.92 ft (2013-01-11), average 2,207.70 ft, 365 days measured2014: lowest 2,201.24 ft (2014-09-05), highest 2,211.20 ft (2014-09-27), average 2,205.84 ft, 365 days measured2015: lowest 2,209.73 ft (2015-04-12), highest 2,222.96 ft (2015-07-08), average 2,216.24 ft, 365 days measured2016: lowest 2,216.42 ft (2016-08-27), highest 2,218.69 ft (2016-11-08), average 2,217.70 ft, 366 days measured2017: lowest 2,214.74 ft (2017-12-31), highest 2,218.62 ft (2017-02-16), average 2,216.76 ft, 365 days measured2018: lowest 2,211.31 ft (2018-09-20), highest 2,216.17 ft (2018-10-26), average 2,213.67 ft, 365 days measured2019: lowest 2,214.09 ft (2019-03-11), highest 2,219.47 ft (2019-06-06), average 2,216.82 ft, 365 days measured2020: lowest 2,215.75 ft (2020-12-30), highest 2,222.09 ft (2020-05-25), average 2,218.19 ft, 364 days measured2021: lowest 2,213.90 ft (2021-04-27), highest 2,223.55 ft (2021-06-30), average 2,217.29 ft, 365 days measured2022: lowest 2,210.09 ft (2022-12-30), highest 2,216.37 ft (2022-01-01), average 2,212.75 ft, 365 days measured2023: lowest 2,208.09 ft (2023-05-21), highest 2,217.46 ft (2023-07-02), average 2,213.46 ft, 365 days measured2024: lowest 2,215.14 ft (2024-05-01), highest 2,222.08 ft (2024-11-19), average 2,217.99 ft, 366 days measured2025: lowest 2,214.91 ft (2025-12-31), highest 2,219.79 ft (2025-01-01), average 2,217.94 ft, 365 days measured2026: lowest 2,208.24 ft (2026-10-13), highest 2,214.89 ft (2026-01-01), average 2,212.03 ft, 295 days measured
2,1802,1932,2062,2192,232199720052013202120261997: lowest 2,183.52 ft (1997-12-19), highest 2,184.37 ft (1997-10-01), average 2,183.88 ft, 87 days measured1998: lowest 2,182.38 ft (1998-09-30), highest 2,184.75 ft (1998-06-13), average 2,183.62 ft, 269 days measured2000: lowest 2,200.57 ft (2000-10-14), highest 2,211.45 ft (2000-10-26), average 2,205.97 ft, 92 days measured2001: lowest 2,202.00 ft (2001-08-22), highest 2,206.80 ft (2001-06-01), average 2,203.57 ft, 348 days measured2002: lowest 2,205.13 ft (2002-03-16), highest 2,208.77 ft (2002-10-30), average 2,206.75 ft, 347 days measured2003: lowest 2,207.25 ft (2003-05-19), highest 2,211.68 ft (2003-09-12), average 2,209.61 ft, 365 days measured2004: lowest 2,210.20 ft (2004-01-11), highest 2,225.94 ft (2004-11-17), average 2,215.62 ft, 366 days measured2005: lowest 2,218.59 ft (2005-12-30), highest 2,222.02 ft (2005-08-17), average 2,219.76 ft, 365 days measured2006: lowest 2,217.50 ft (2006-04-19), highest 2,225.76 ft (2006-10-16), average 2,219.34 ft, 362 days measured2007: lowest 2,218.86 ft (2007-12-09), highest 2,221.74 ft (2007-05-10), average 2,219.97 ft, 365 days measured2008: lowest 2,217.81 ft (2008-06-16), highest 2,225.79 ft (2008-09-13), average 2,219.09 ft, 366 days measured2009: lowest 2,216.92 ft (2009-12-21), highest 2,219.49 ft (2009-01-01), average 2,218.32 ft, 363 days measured2010: lowest 2,216.87 ft (2010-01-26), highest 2,229.30 ft (2010-07-05), average 2,219.27 ft, 365 days measured2011: lowest 2,212.02 ft (2011-12-30), highest 2,218.03 ft (2011-01-01), average 2,214.99 ft, 362 days measured2012: lowest 2,209.70 ft (2012-12-30), highest 2,213.09 ft (2012-06-07), average 2,211.46 ft, 366 days measured2013: lowest 2,205.98 ft (2013-12-20), highest 2,209.92 ft (2013-01-11), average 2,207.70 ft, 365 days measured2014: lowest 2,201.24 ft (2014-09-05), highest 2,211.20 ft (2014-09-27), average 2,205.84 ft, 365 days measured2015: lowest 2,209.73 ft (2015-04-12), highest 2,222.96 ft (2015-07-08), average 2,216.24 ft, 365 days measured2016: lowest 2,216.42 ft (2016-08-27), highest 2,218.69 ft (2016-11-08), average 2,217.70 ft, 366 days measured2017: lowest 2,214.74 ft (2017-12-31), highest 2,218.62 ft (2017-02-16), average 2,216.76 ft, 365 days measured2018: lowest 2,211.31 ft (2018-09-20), highest 2,216.17 ft (2018-10-26), average 2,213.67 ft, 365 days measured2019: lowest 2,214.09 ft (2019-03-11), highest 2,219.47 ft (2019-06-06), average 2,216.82 ft, 365 days measured2020: lowest 2,215.75 ft (2020-12-30), highest 2,222.09 ft (2020-05-25), average 2,218.19 ft, 364 days measured2021: lowest 2,213.90 ft (2021-04-27), highest 2,223.55 ft (2021-06-30), average 2,217.29 ft, 365 days measured2022: lowest 2,210.09 ft (2022-12-30), highest 2,216.37 ft (2022-01-01), average 2,212.75 ft, 365 days measured2023: lowest 2,208.09 ft (2023-05-21), highest 2,217.46 ft (2023-07-02), average 2,213.46 ft, 365 days measured2024: lowest 2,215.14 ft (2024-05-01), highest 2,222.08 ft (2024-11-19), average 2,217.99 ft, 366 days measured2025: lowest 2,214.91 ft (2025-12-31), highest 2,219.79 ft (2025-01-01), average 2,217.94 ft, 365 days measured2026: lowest 2,208.24 ft (2026-10-13), highest 2,214.89 ft (2026-01-01), average 2,212.03 ft, 295 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.

  • 20142,201.24 ft on Sep 5
  • 20012,202.00 ft on Aug 22
  • 20022,205.13 ft on Mar 16
  • 20132,205.98 ft on Dec 20
  • 20032,207.25 ft on May 19

Yearly highs and lows

YearAverageLowLow dateHighHigh date
2026 (295 days)2,212.032,208.24Oct 132,214.89Jan 1
20252,217.942,214.91Dec 312,219.79Jan 1
20242,217.992,215.14May 12,222.08Nov 19
20232,213.462,208.09May 212,217.46Jul 2
20222,212.752,210.09Dec 302,216.37Jan 1
20212,217.292,213.90Apr 272,223.55Jun 30
20202,218.192,215.75Dec 302,222.09May 25
20192,216.822,214.09Mar 112,219.47Jun 6
20182,213.672,211.31Sep 202,216.17Oct 26
20172,216.762,214.74Dec 312,218.62Feb 16
20162,217.702,216.42Aug 272,218.69Nov 8
20152,216.242,209.73Apr 122,222.96Jul 8
20142,205.842,201.24Sep 52,211.20Sep 27
20132,207.702,205.98Dec 202,209.92Jan 11
20122,211.462,209.70Dec 302,213.09Jun 7
20112,214.992,212.02Dec 302,218.03Jan 1
20102,219.272,216.87Jan 262,229.30Jul 5
20092,218.322,216.92Dec 212,219.49Jan 1
20082,219.092,217.81Jun 162,225.79Sep 13
20072,219.972,218.86Dec 92,221.74May 10
20062,219.342,217.50Apr 192,225.76Oct 16
20052,219.762,218.59Dec 302,222.02Aug 17
20042,215.622,210.20Jan 112,225.94Nov 17
20032,209.612,207.25May 192,211.68Sep 12
20022,206.752,205.13Mar 162,208.77Oct 30
20012,203.572,202.00Aug 222,206.80Jun 1
2000 (92 days)2,205.972,200.57Oct 142,211.45Oct 26
1998 (269 days)2,183.622,182.38Sep 302,184.75Jun 13
1997 (87 days)2,183.882,183.52Dec 192,184.37Oct 1

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

Monthly averages

MonthAverageLowestHighest
January2,213.392,183.782,220.44
February2,213.102,183.752,220.26
March2,212.902,183.642,220.51
April2,212.862,183.562,222.63
May2,213.292,183.142,222.09
June2,214.312,183.302,223.55
July2,214.072,183.412,229.30
August2,213.592,183.032,222.02
September2,213.742,182.382,225.79
October2,213.512,183.952,225.76
November2,214.142,183.632,225.94
December2,213.622,183.522,220.64

Download

Daily levels as CSV (9,829 rows; credit the original agencies listed below)