Country: USA
United StatesCanadaUnited Kingdom

Heron Lake water level history

Daily records since 2004 · Level today: 3.98 ft

Highest on record
8.46 ft
May 16, 2019
Lowest on record
2.10 ft
Feb 19, 2011
Today
3.98 ft
Oct 23, 2026
Years of data
23
since 2004

In short

Across 16 complete years, 2024 had the lowest average level (3.71 ft) and 2016 the highest (6.24 ft).

On average the lake is lowest in December (3.92 ft) and highest in May (5.54 ft).

Heron Lake level, all years

Loading chart…

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

Each year's lowest and highest level

23579200420072010201320162019202220262004: lowest 3.61 ft (2004-10-17), highest 5.74 ft (2004-07-22), average 4.71 ft, 272 days measured2005: lowest 2.78 ft (2005-12-24), highest 6.14 ft (2005-01-27), average 4.16 ft, 347 days measured2006: lowest 2.83 ft (2006-10-15), highest 4.86 ft (2006-06-10), average 3.78 ft, 365 days measured2007: lowest 3.18 ft (2007-10-15), highest 7.66 ft (2007-04-03), average 4.69 ft, 350 days measured2008: lowest 3.51 ft (2008-12-08), highest 7.60 ft (2008-06-10), average 4.84 ft, 300 days measured2009: lowest 3.48 ft (2009-02-09), highest 6.81 ft (2009-06-25), average 4.64 ft, 353 days measured2010: lowest 2.44 ft (2010-12-29), highest 4.83 ft (2010-07-28), average 3.36 ft, 269 days measured2011: lowest 2.10 ft (2011-02-19), highest 7.48 ft (2011-06-20), average 4.92 ft, 325 days measured2012: lowest 2.42 ft (2012-08-26), highest 5.64 ft (2012-02-04), average 3.86 ft, 366 days measured2013: lowest 3.32 ft (2013-01-03), highest 7.08 ft (2013-04-28), average 5.06 ft, 365 days measured2014: lowest 4.40 ft (2014-01-01), highest 6.79 ft (2014-06-12), average 5.34 ft, 336 days measured2015: lowest 4.47 ft (2015-11-25), highest 7.11 ft (2015-07-17), average 5.24 ft, 349 days measured2016: lowest 5.10 ft (2016-02-23), highest 7.62 ft (2016-08-26), average 6.24 ft, 366 days measured2017: lowest 4.26 ft (2017-12-31), highest 7.58 ft (2017-05-09), average 5.97 ft, 365 days measured2018: lowest 4.00 ft (2018-01-21), highest 6.44 ft (2018-04-21), average 5.02 ft, 313 days measured2019: lowest 3.79 ft (2019-12-27), highest 8.46 ft (2019-05-16), average 5.70 ft, 364 days measured2020: lowest 3.47 ft (2020-10-17), highest 6.75 ft (2020-04-12), average 4.96 ft, 337 days measured2021: lowest 3.09 ft (2021-03-10), highest 4.91 ft (2021-12-29), average 4.11 ft, 354 days measured2022: lowest 2.98 ft (2022-12-27), highest 7.38 ft (2022-05-01), average 4.95 ft, 365 days measured2023: lowest 2.99 ft (2023-12-30), highest 5.39 ft (2023-04-17), average 3.62 ft, 316 days measured2024: lowest 2.81 ft (2024-11-03), highest 4.97 ft (2024-06-05), average 3.71 ft, 364 days measured2025: lowest 2.69 ft (2025-12-17), highest 5.01 ft (2025-06-18), average 3.83 ft, 347 days measured2026: lowest 2.37 ft (2026-03-01), highest 4.91 ft (2026-08-22), average 3.83 ft, 271 days measured
23579200420102016202220262004: lowest 3.61 ft (2004-10-17), highest 5.74 ft (2004-07-22), average 4.71 ft, 272 days measured2005: lowest 2.78 ft (2005-12-24), highest 6.14 ft (2005-01-27), average 4.16 ft, 347 days measured2006: lowest 2.83 ft (2006-10-15), highest 4.86 ft (2006-06-10), average 3.78 ft, 365 days measured2007: lowest 3.18 ft (2007-10-15), highest 7.66 ft (2007-04-03), average 4.69 ft, 350 days measured2008: lowest 3.51 ft (2008-12-08), highest 7.60 ft (2008-06-10), average 4.84 ft, 300 days measured2009: lowest 3.48 ft (2009-02-09), highest 6.81 ft (2009-06-25), average 4.64 ft, 353 days measured2010: lowest 2.44 ft (2010-12-29), highest 4.83 ft (2010-07-28), average 3.36 ft, 269 days measured2011: lowest 2.10 ft (2011-02-19), highest 7.48 ft (2011-06-20), average 4.92 ft, 325 days measured2012: lowest 2.42 ft (2012-08-26), highest 5.64 ft (2012-02-04), average 3.86 ft, 366 days measured2013: lowest 3.32 ft (2013-01-03), highest 7.08 ft (2013-04-28), average 5.06 ft, 365 days measured2014: lowest 4.40 ft (2014-01-01), highest 6.79 ft (2014-06-12), average 5.34 ft, 336 days measured2015: lowest 4.47 ft (2015-11-25), highest 7.11 ft (2015-07-17), average 5.24 ft, 349 days measured2016: lowest 5.10 ft (2016-02-23), highest 7.62 ft (2016-08-26), average 6.24 ft, 366 days measured2017: lowest 4.26 ft (2017-12-31), highest 7.58 ft (2017-05-09), average 5.97 ft, 365 days measured2018: lowest 4.00 ft (2018-01-21), highest 6.44 ft (2018-04-21), average 5.02 ft, 313 days measured2019: lowest 3.79 ft (2019-12-27), highest 8.46 ft (2019-05-16), average 5.70 ft, 364 days measured2020: lowest 3.47 ft (2020-10-17), highest 6.75 ft (2020-04-12), average 4.96 ft, 337 days measured2021: lowest 3.09 ft (2021-03-10), highest 4.91 ft (2021-12-29), average 4.11 ft, 354 days measured2022: lowest 2.98 ft (2022-12-27), highest 7.38 ft (2022-05-01), average 4.95 ft, 365 days measured2023: lowest 2.99 ft (2023-12-30), highest 5.39 ft (2023-04-17), average 3.62 ft, 316 days measured2024: lowest 2.81 ft (2024-11-03), highest 4.97 ft (2024-06-05), average 3.71 ft, 364 days measured2025: lowest 2.69 ft (2025-12-17), highest 5.01 ft (2025-06-18), average 3.83 ft, 347 days measured2026: lowest 2.37 ft (2026-03-01), highest 4.91 ft (2026-08-22), average 3.83 ft, 271 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.

  • 20122.42 ft on Aug 26
  • 20252.69 ft on Dec 17
  • 20052.78 ft on Dec 24
  • 20242.81 ft on Nov 3
  • 20062.83 ft on Oct 15

Yearly highs and lows

YearAverageLowLow dateHighHigh date
2026 (271 days)3.832.37Mar 14.91Aug 22
20253.832.69Dec 175.01Jun 18
20243.712.81Nov 34.97Jun 5
2023 (316 days)3.622.99Dec 305.39Apr 17
20224.952.98Dec 277.38May 1
20214.113.09Mar 104.91Dec 29
20204.963.47Oct 176.75Apr 12
20195.703.79Dec 278.46May 16
2018 (313 days)5.024.00Jan 216.44Apr 21
20175.974.26Dec 317.58May 9
20166.245.10Feb 237.62Aug 26
20155.244.47Nov 257.11Jul 17
20145.344.40Jan 16.79Jun 12
20135.063.32Jan 37.08Apr 28
20123.862.42Aug 265.64Feb 4
2011 (325 days)4.922.10Feb 197.48Jun 20
2010 (269 days)3.362.44Dec 294.83Jul 28
20094.643.48Feb 96.81Jun 25
2008 (300 days)4.843.51Dec 87.60Jun 10
20074.693.18Oct 157.66Apr 3
20063.782.83Oct 154.86Jun 10
20054.162.78Dec 246.14Jan 27
2004 (272 days)4.713.61Oct 175.74Jul 22

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

Monthly averages

MonthAverageLowestHighest
January4.212.326.37
February4.412.106.86
March4.502.377.46
April5.163.007.66
May5.542.908.46
June5.452.977.60
July5.322.717.21
August4.862.427.62
September4.392.757.57
October4.072.837.27
November3.922.686.66
December3.922.446.13

Download

Daily levels as CSV (7,759 rows; credit the original agencies listed below)