Country: USA
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South Fork Tolt Reservoir water level history

Daily records since 1991 · Level today: 1,720.72 ft

Highest on record
1,766.54 ft
May 20, 2008
Lowest on record
1,711.77 ft
Oct 12, 2003
Today
1,720.72 ft
Oct 23, 2026
Years of data
35
since 1991

In short

Across 34 complete years, 2023 had the lowest average level (1,739.94 ft) and 1997 the highest (1,759.01 ft).

On average the lake is lowest in October (1,738.17 ft) and highest in May (1,761.08 ft).

South Fork Tolt Reservoir level, all years

Loading chart…

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

Each year's lowest and highest level

1,7081,7241,7391,7541,77019911995199920032007201120152019202320261991: lowest 1,728.74 ft (1991-11-03), highest 1,751.43 ft (1991-12-13), average 1,739.52 ft, 92 days measured1992: lowest 1,729.42 ft (1992-10-30), highest 1,757.47 ft (1992-01-30), average 1,744.09 ft, 366 days measured1993: lowest 1,740.70 ft (1993-11-20), highest 1,766.17 ft (1993-04-29), average 1,756.26 ft, 365 days measured1994: lowest 1,733.61 ft (1994-10-19), highest 1,765.63 ft (1994-06-14), average 1,753.41 ft, 365 days measured1995: lowest 1,743.48 ft (1995-09-29), highest 1,765.39 ft (1995-05-12), average 1,757.49 ft, 365 days measured1996: lowest 1,740.53 ft (1996-10-12), highest 1,765.88 ft (1996-04-24), average 1,755.53 ft, 366 days measured1997: lowest 1,750.63 ft (1997-09-15), highest 1,766.41 ft (1997-07-10), average 1,759.01 ft, 360 days measured1998: lowest 1,734.61 ft (1998-11-12), highest 1,765.38 ft (1998-05-27), average 1,754.42 ft, 362 days measured1999: lowest 1,746.37 ft (1999-10-06), highest 1,766.01 ft (1999-06-24), average 1,756.66 ft, 364 days measured2000: lowest 1,741.79 ft (2000-12-23), highest 1,766.05 ft (2000-06-14), average 1,753.56 ft, 366 days measured2001: lowest 1,738.96 ft (2001-10-09), highest 1,762.56 ft (2001-12-18), average 1,751.26 ft, 365 days measured2002: lowest 1,731.53 ft (2002-11-08), highest 1,765.48 ft (2002-06-29), average 1,751.57 ft, 365 days measured2003: lowest 1,711.77 ft (2003-10-12), highest 1,761.82 ft (2003-04-01), average 1,742.90 ft, 365 days measured2004: lowest 1,740.05 ft (2004-08-21), highest 1,760.77 ft (2004-12-15), average 1,753.20 ft, 366 days measured2005: lowest 1,735.49 ft (2005-09-28), highest 1,761.94 ft (2005-01-23), average 1,752.09 ft, 365 days measured2006: lowest 1,728.29 ft (2006-11-02), highest 1,763.27 ft (2006-06-18), average 1,752.00 ft, 365 days measured2007: lowest 1,736.70 ft (2007-09-29), highest 1,764.77 ft (2007-03-24), average 1,752.65 ft, 365 days measured2008: lowest 1,748.57 ft (2008-11-01), highest 1,766.54 ft (2008-05-20), average 1,756.97 ft, 366 days measured2009: lowest 1,734.59 ft (2009-10-16), highest 1,765.14 ft (2009-01-07), average 1,752.53 ft, 365 days measured2010: lowest 1,748.14 ft (2010-10-08), highest 1,765.71 ft (2010-06-02), average 1,756.45 ft, 365 days measured2011: lowest 1,747.96 ft (2011-10-10), highest 1,765.24 ft (2011-06-30), average 1,756.89 ft, 365 days measured2012: lowest 1,740.17 ft (2012-10-13), highest 1,765.69 ft (2012-06-18), average 1,755.64 ft, 366 days measured2013: lowest 1,738.00 ft (2013-10-03), highest 1,763.38 ft (2013-06-03), average 1,754.02 ft, 359 days measured2014: lowest 1,732.06 ft (2014-10-13), highest 1,764.74 ft (2014-05-10), average 1,752.95 ft, 365 days measured2015: lowest 1,712.13 ft (2015-10-09), highest 1,763.17 ft (2015-04-05), average 1,745.90 ft, 365 days measured2016: lowest 1,736.54 ft (2016-10-06), highest 1,763.82 ft (2016-02-16), average 1,754.26 ft, 366 days measured2017: lowest 1,731.19 ft (2017-10-16), highest 1,764.14 ft (2017-06-18), average 1,752.45 ft, 347 days measured2018: lowest 1,724.85 ft (2018-10-25), highest 1,764.14 ft (2018-05-20), average 1,751.11 ft, 365 days measured2019: lowest 1,731.56 ft (2019-09-14), highest 1,758.69 ft (2019-04-25), average 1,747.21 ft, 365 days measured2020: lowest 1,742.95 ft (2020-09-22), highest 1,765.61 ft (2020-05-26), average 1,757.48 ft, 366 days measured2021: lowest 1,735.54 ft (2021-09-26), highest 1,762.75 ft (2021-01-06), average 1,752.30 ft, 364 days measured2022: lowest 1,726.32 ft (2022-10-27), highest 1,766.00 ft (2022-06-10), average 1,750.98 ft, 365 days measured2023: lowest 1,718.81 ft (2023-11-01), highest 1,755.03 ft (2023-05-22), average 1,739.94 ft, 365 days measured2024: lowest 1,738.23 ft (2024-10-18), highest 1,764.83 ft (2024-06-05), average 1,754.01 ft, 366 days measured2025: lowest 1,722.89 ft (2025-10-18), highest 1,762.42 ft (2025-03-28), average 1,748.55 ft, 365 days measured2026: lowest 1,721.20 ft (2026-10-21), highest 1,764.37 ft (2026-03-20), average 1,751.10 ft, 294 days measured
1,7081,7241,7391,7541,770199120002009201820261991: lowest 1,728.74 ft (1991-11-03), highest 1,751.43 ft (1991-12-13), average 1,739.52 ft, 92 days measured1992: lowest 1,729.42 ft (1992-10-30), highest 1,757.47 ft (1992-01-30), average 1,744.09 ft, 366 days measured1993: lowest 1,740.70 ft (1993-11-20), highest 1,766.17 ft (1993-04-29), average 1,756.26 ft, 365 days measured1994: lowest 1,733.61 ft (1994-10-19), highest 1,765.63 ft (1994-06-14), average 1,753.41 ft, 365 days measured1995: lowest 1,743.48 ft (1995-09-29), highest 1,765.39 ft (1995-05-12), average 1,757.49 ft, 365 days measured1996: lowest 1,740.53 ft (1996-10-12), highest 1,765.88 ft (1996-04-24), average 1,755.53 ft, 366 days measured1997: lowest 1,750.63 ft (1997-09-15), highest 1,766.41 ft (1997-07-10), average 1,759.01 ft, 360 days measured1998: lowest 1,734.61 ft (1998-11-12), highest 1,765.38 ft (1998-05-27), average 1,754.42 ft, 362 days measured1999: lowest 1,746.37 ft (1999-10-06), highest 1,766.01 ft (1999-06-24), average 1,756.66 ft, 364 days measured2000: lowest 1,741.79 ft (2000-12-23), highest 1,766.05 ft (2000-06-14), average 1,753.56 ft, 366 days measured2001: lowest 1,738.96 ft (2001-10-09), highest 1,762.56 ft (2001-12-18), average 1,751.26 ft, 365 days measured2002: lowest 1,731.53 ft (2002-11-08), highest 1,765.48 ft (2002-06-29), average 1,751.57 ft, 365 days measured2003: lowest 1,711.77 ft (2003-10-12), highest 1,761.82 ft (2003-04-01), average 1,742.90 ft, 365 days measured2004: lowest 1,740.05 ft (2004-08-21), highest 1,760.77 ft (2004-12-15), average 1,753.20 ft, 366 days measured2005: lowest 1,735.49 ft (2005-09-28), highest 1,761.94 ft (2005-01-23), average 1,752.09 ft, 365 days measured2006: lowest 1,728.29 ft (2006-11-02), highest 1,763.27 ft (2006-06-18), average 1,752.00 ft, 365 days measured2007: lowest 1,736.70 ft (2007-09-29), highest 1,764.77 ft (2007-03-24), average 1,752.65 ft, 365 days measured2008: lowest 1,748.57 ft (2008-11-01), highest 1,766.54 ft (2008-05-20), average 1,756.97 ft, 366 days measured2009: lowest 1,734.59 ft (2009-10-16), highest 1,765.14 ft (2009-01-07), average 1,752.53 ft, 365 days measured2010: lowest 1,748.14 ft (2010-10-08), highest 1,765.71 ft (2010-06-02), average 1,756.45 ft, 365 days measured2011: lowest 1,747.96 ft (2011-10-10), highest 1,765.24 ft (2011-06-30), average 1,756.89 ft, 365 days measured2012: lowest 1,740.17 ft (2012-10-13), highest 1,765.69 ft (2012-06-18), average 1,755.64 ft, 366 days measured2013: lowest 1,738.00 ft (2013-10-03), highest 1,763.38 ft (2013-06-03), average 1,754.02 ft, 359 days measured2014: lowest 1,732.06 ft (2014-10-13), highest 1,764.74 ft (2014-05-10), average 1,752.95 ft, 365 days measured2015: lowest 1,712.13 ft (2015-10-09), highest 1,763.17 ft (2015-04-05), average 1,745.90 ft, 365 days measured2016: lowest 1,736.54 ft (2016-10-06), highest 1,763.82 ft (2016-02-16), average 1,754.26 ft, 366 days measured2017: lowest 1,731.19 ft (2017-10-16), highest 1,764.14 ft (2017-06-18), average 1,752.45 ft, 347 days measured2018: lowest 1,724.85 ft (2018-10-25), highest 1,764.14 ft (2018-05-20), average 1,751.11 ft, 365 days measured2019: lowest 1,731.56 ft (2019-09-14), highest 1,758.69 ft (2019-04-25), average 1,747.21 ft, 365 days measured2020: lowest 1,742.95 ft (2020-09-22), highest 1,765.61 ft (2020-05-26), average 1,757.48 ft, 366 days measured2021: lowest 1,735.54 ft (2021-09-26), highest 1,762.75 ft (2021-01-06), average 1,752.30 ft, 364 days measured2022: lowest 1,726.32 ft (2022-10-27), highest 1,766.00 ft (2022-06-10), average 1,750.98 ft, 365 days measured2023: lowest 1,718.81 ft (2023-11-01), highest 1,755.03 ft (2023-05-22), average 1,739.94 ft, 365 days measured2024: lowest 1,738.23 ft (2024-10-18), highest 1,764.83 ft (2024-06-05), average 1,754.01 ft, 366 days measured2025: lowest 1,722.89 ft (2025-10-18), highest 1,762.42 ft (2025-03-28), average 1,748.55 ft, 365 days measured2026: lowest 1,721.20 ft (2026-10-21), highest 1,764.37 ft (2026-03-20), average 1,751.10 ft, 294 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.

  • 20031,711.77 ft on Oct 12
  • 20151,712.13 ft on Oct 9
  • 20231,718.81 ft on Nov 1
  • 20251,722.89 ft on Oct 18
  • 20181,724.85 ft on Oct 25

Yearly highs and lows

YearAverageLowLow dateHighHigh date
2026 (294 days)1,751.101,721.20Oct 211,764.37Mar 20
20251,748.551,722.89Oct 181,762.42Mar 28
20241,754.011,738.23Oct 181,764.83Jun 5
20231,739.941,718.81Nov 11,755.03May 22
20221,750.981,726.32Oct 271,766.00Jun 10
20211,752.301,735.54Sep 261,762.75Jan 6
20201,757.481,742.95Sep 221,765.61May 26
20191,747.211,731.56Sep 141,758.69Apr 25
20181,751.111,724.85Oct 251,764.14May 20
20171,752.451,731.19Oct 161,764.14Jun 18
20161,754.261,736.54Oct 61,763.82Feb 16
20151,745.901,712.13Oct 91,763.17Apr 5
20141,752.951,732.06Oct 131,764.74May 10
20131,754.021,738.00Oct 31,763.38Jun 3
20121,755.641,740.17Oct 131,765.69Jun 18
20111,756.891,747.96Oct 101,765.24Jun 30
20101,756.451,748.14Oct 81,765.71Jun 2
20091,752.531,734.59Oct 161,765.14Jan 7
20081,756.971,748.57Nov 11,766.54May 20
20071,752.651,736.70Sep 291,764.77Mar 24
20061,752.001,728.29Nov 21,763.27Jun 18
20051,752.091,735.49Sep 281,761.94Jan 23
20041,753.201,740.05Aug 211,760.77Dec 15
20031,742.901,711.77Oct 121,761.82Apr 1
20021,751.571,731.53Nov 81,765.48Jun 29
20011,751.261,738.96Oct 91,762.56Dec 18
20001,753.561,741.79Dec 231,766.05Jun 14
19991,756.661,746.37Oct 61,766.01Jun 24
19981,754.421,734.61Nov 121,765.38May 27
19971,759.011,750.63Sep 151,766.41Jul 10
19961,755.531,740.53Oct 121,765.88Apr 24
19951,757.491,743.48Sep 291,765.39May 12
19941,753.411,733.61Oct 191,765.63Jun 14
19931,756.261,740.70Nov 201,766.17Apr 29
19921,744.091,729.42Oct 301,757.47Jan 30
1991 (92 days)1,739.521,728.74Nov 31,751.43Dec 13

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

Monthly averages

MonthAverageLowestHighest
January1,754.721,734.021,765.14
February1,755.651,742.341,764.65
March1,756.571,743.571,764.77
April1,758.961,743.391,766.17
May1,761.081,748.781,766.54
June1,761.061,744.181,766.05
July1,756.761,734.761,766.41
August1,748.641,722.531,763.51
September1,740.991,715.351,757.74
October1,738.171,711.771,757.84
November1,745.361,718.811,764.52
December1,751.191,728.251,764.07

Download

Daily levels as CSV (12,771 rows; credit the original agencies listed below)