Country: USA
United StatesCanadaUnited Kingdom

Greenbelt Lake water level history

Daily records since 1996 · Level today: 2,606.63 ft

Highest on record
2,652.45 ft
Oct 1, 1996
Lowest on record
2,606.67 ft
Oct 22, 2026
Today
2,606.63 ft
Oct 23, 2026
Years of data
30
since 1996

In short

Across 27 complete years, 2025 had the lowest average level (2,614.72 ft) and 1998 the highest (2,643.63 ft).

On average the lake is lowest in October (2,630.13 ft) and highest in June (2,631.84 ft).

Greenbelt Lake level, all years

Loading chart…

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

Each year's lowest and highest level

2,6042,6172,6302,6422,6551996200020042008201220162020202420261996: lowest 2,638.67 ft (1996-11-12), highest 2,652.45 ft (1996-10-01), average 2,638.98 ft, 92 days measured1997: lowest 2,638.79 ft (1997-01-08), highest 2,646.40 ft (1997-06-18), average 2,643.44 ft, 365 days measured1998: lowest 2,640.72 ft (1998-10-26), highest 2,645.88 ft (1998-03-29), average 2,643.63 ft, 363 days measured1999: lowest 2,641.87 ft (1999-12-15), highest 2,645.06 ft (1999-06-28), average 2,643.07 ft, 227 days measured2000: lowest 2,639.40 ft (2000-10-20), highest 2,643.35 ft (2000-07-01), average 2,641.43 ft, 356 days measured2001: lowest 2,639.83 ft (2001-01-01), highest 2,643.08 ft (2001-06-01), average 2,641.06 ft, 265 days measured2002: lowest 2,638.39 ft (2002-10-01), highest 2,641.04 ft (2002-04-18), average 2,639.94 ft, 332 days measured2003: lowest 2,638.57 ft (2003-08-28), highest 2,641.34 ft (2003-09-13), average 2,640.08 ft, 365 days measured2004: lowest 2,638.62 ft (2004-10-05), highest 2,641.76 ft (2004-04-27), average 2,640.17 ft, 366 days measured2005: lowest 2,638.34 ft (2005-12-30), highest 2,642.77 ft (2005-06-16), average 2,640.09 ft, 365 days measured2006: lowest 2,634.36 ft (2006-11-30), highest 2,638.31 ft (2006-01-01), average 2,636.30 ft, 365 days measured2007: lowest 2,635.15 ft (2007-01-01), highest 2,641.50 ft (2007-06-28), average 2,638.84 ft, 365 days measured2008: lowest 2,635.20 ft (2008-12-31), highest 2,639.27 ft (2008-01-15), average 2,637.14 ft, 348 days measured2009: lowest 2,631.41 ft (2009-12-24), highest 2,635.20 ft (2009-01-01), average 2,633.60 ft, 365 days measured2010: lowest 2,631.42 ft (2010-01-13), highest 2,635.33 ft (2010-07-16), average 2,633.14 ft, 365 days measured2011: lowest 2,624.95 ft (2011-12-10), highest 2,632.70 ft (2011-02-21), average 2,629.07 ft, 350 days measured2012: lowest 2,619.48 ft (2012-12-31), highest 2,625.33 ft (2012-06-15), average 2,623.32 ft, 366 days measured2013: lowest 2,618.25 ft (2013-06-16), highest 2,622.38 ft (2013-06-22), average 2,620.51 ft, 365 days measured2014: lowest 2,618.88 ft (2014-12-02), highest 2,621.68 ft (2014-03-08), average 2,620.34 ft, 365 days measured2015: lowest 2,618.91 ft (2015-01-01), highest 2,629.91 ft (2015-12-31), average 2,625.42 ft, 363 days measured2016: lowest 2,629.93 ft (2016-01-01), highest 2,633.52 ft (2016-09-09), average 2,631.60 ft, 362 days measured2017: lowest 2,631.59 ft (2017-12-31), highest 2,633.56 ft (2017-05-13), average 2,632.61 ft, 365 days measured2018: lowest 2,627.42 ft (2018-12-23), highest 2,631.58 ft (2018-01-01), average 2,629.57 ft, 365 days measured2019: lowest 2,626.79 ft (2019-10-01), highest 2,629.26 ft (2019-06-07), average 2,627.77 ft, 365 days measured2020: lowest 2,623.87 ft (2020-12-27), highest 2,627.91 ft (2020-03-19), average 2,626.22 ft, 364 days measured2021: lowest 2,623.79 ft (2021-01-21), highest 2,626.98 ft (2021-07-10), average 2,624.86 ft, 365 days measured2022: lowest 2,618.69 ft (2022-12-30), highest 2,623.84 ft (2022-01-01), average 2,621.61 ft, 365 days measured2023: lowest 2,616.47 ft (2023-12-12), highest 2,620.54 ft (2023-06-11), average 2,618.37 ft, 360 days measured2024: lowest 2,613.40 ft (2024-11-01), highest 2,618.17 ft (2024-04-14), average 2,616.25 ft, 359 days measured2025: lowest 2,612.64 ft (2025-12-31), highest 2,616.64 ft (2025-06-11), average 2,614.72 ft, 351 days measured2026: lowest 2,606.67 ft (2026-10-22), highest 2,612.63 ft (2026-01-01), average 2,610.30 ft, 264 days measured
2,6042,6172,6302,6422,655199620042012202020261996: lowest 2,638.67 ft (1996-11-12), highest 2,652.45 ft (1996-10-01), average 2,638.98 ft, 92 days measured1997: lowest 2,638.79 ft (1997-01-08), highest 2,646.40 ft (1997-06-18), average 2,643.44 ft, 365 days measured1998: lowest 2,640.72 ft (1998-10-26), highest 2,645.88 ft (1998-03-29), average 2,643.63 ft, 363 days measured1999: lowest 2,641.87 ft (1999-12-15), highest 2,645.06 ft (1999-06-28), average 2,643.07 ft, 227 days measured2000: lowest 2,639.40 ft (2000-10-20), highest 2,643.35 ft (2000-07-01), average 2,641.43 ft, 356 days measured2001: lowest 2,639.83 ft (2001-01-01), highest 2,643.08 ft (2001-06-01), average 2,641.06 ft, 265 days measured2002: lowest 2,638.39 ft (2002-10-01), highest 2,641.04 ft (2002-04-18), average 2,639.94 ft, 332 days measured2003: lowest 2,638.57 ft (2003-08-28), highest 2,641.34 ft (2003-09-13), average 2,640.08 ft, 365 days measured2004: lowest 2,638.62 ft (2004-10-05), highest 2,641.76 ft (2004-04-27), average 2,640.17 ft, 366 days measured2005: lowest 2,638.34 ft (2005-12-30), highest 2,642.77 ft (2005-06-16), average 2,640.09 ft, 365 days measured2006: lowest 2,634.36 ft (2006-11-30), highest 2,638.31 ft (2006-01-01), average 2,636.30 ft, 365 days measured2007: lowest 2,635.15 ft (2007-01-01), highest 2,641.50 ft (2007-06-28), average 2,638.84 ft, 365 days measured2008: lowest 2,635.20 ft (2008-12-31), highest 2,639.27 ft (2008-01-15), average 2,637.14 ft, 348 days measured2009: lowest 2,631.41 ft (2009-12-24), highest 2,635.20 ft (2009-01-01), average 2,633.60 ft, 365 days measured2010: lowest 2,631.42 ft (2010-01-13), highest 2,635.33 ft (2010-07-16), average 2,633.14 ft, 365 days measured2011: lowest 2,624.95 ft (2011-12-10), highest 2,632.70 ft (2011-02-21), average 2,629.07 ft, 350 days measured2012: lowest 2,619.48 ft (2012-12-31), highest 2,625.33 ft (2012-06-15), average 2,623.32 ft, 366 days measured2013: lowest 2,618.25 ft (2013-06-16), highest 2,622.38 ft (2013-06-22), average 2,620.51 ft, 365 days measured2014: lowest 2,618.88 ft (2014-12-02), highest 2,621.68 ft (2014-03-08), average 2,620.34 ft, 365 days measured2015: lowest 2,618.91 ft (2015-01-01), highest 2,629.91 ft (2015-12-31), average 2,625.42 ft, 363 days measured2016: lowest 2,629.93 ft (2016-01-01), highest 2,633.52 ft (2016-09-09), average 2,631.60 ft, 362 days measured2017: lowest 2,631.59 ft (2017-12-31), highest 2,633.56 ft (2017-05-13), average 2,632.61 ft, 365 days measured2018: lowest 2,627.42 ft (2018-12-23), highest 2,631.58 ft (2018-01-01), average 2,629.57 ft, 365 days measured2019: lowest 2,626.79 ft (2019-10-01), highest 2,629.26 ft (2019-06-07), average 2,627.77 ft, 365 days measured2020: lowest 2,623.87 ft (2020-12-27), highest 2,627.91 ft (2020-03-19), average 2,626.22 ft, 364 days measured2021: lowest 2,623.79 ft (2021-01-21), highest 2,626.98 ft (2021-07-10), average 2,624.86 ft, 365 days measured2022: lowest 2,618.69 ft (2022-12-30), highest 2,623.84 ft (2022-01-01), average 2,621.61 ft, 365 days measured2023: lowest 2,616.47 ft (2023-12-12), highest 2,620.54 ft (2023-06-11), average 2,618.37 ft, 360 days measured2024: lowest 2,613.40 ft (2024-11-01), highest 2,618.17 ft (2024-04-14), average 2,616.25 ft, 359 days measured2025: lowest 2,612.64 ft (2025-12-31), highest 2,616.64 ft (2025-06-11), average 2,614.72 ft, 351 days measured2026: lowest 2,606.67 ft (2026-10-22), highest 2,612.63 ft (2026-01-01), average 2,610.30 ft, 264 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.

  • 20252,612.64 ft on Dec 31
  • 20242,613.40 ft on Nov 1
  • 20232,616.47 ft on Dec 12
  • 20132,618.25 ft on Jun 16
  • 20222,618.69 ft on Dec 30

Yearly highs and lows

YearAverageLowLow dateHighHigh date
2026 (264 days)2,610.302,606.67Oct 222,612.63Jan 1
20252,614.722,612.64Dec 312,616.64Jun 11
20242,616.252,613.40Nov 12,618.17Apr 14
20232,618.372,616.47Dec 122,620.54Jun 11
20222,621.612,618.69Dec 302,623.84Jan 1
20212,624.862,623.79Jan 212,626.98Jul 10
20202,626.222,623.87Dec 272,627.91Mar 19
20192,627.772,626.79Oct 12,629.26Jun 7
20182,629.572,627.42Dec 232,631.58Jan 1
20172,632.612,631.59Dec 312,633.56May 13
20162,631.602,629.93Jan 12,633.52Sep 9
20152,625.422,618.91Jan 12,629.91Dec 31
20142,620.342,618.88Dec 22,621.68Mar 8
20132,620.512,618.25Jun 162,622.38Jun 22
20122,623.322,619.48Dec 312,625.33Jun 15
20112,629.072,624.95Dec 102,632.70Feb 21
20102,633.142,631.42Jan 132,635.33Jul 16
20092,633.602,631.41Dec 242,635.20Jan 1
20082,637.142,635.20Dec 312,639.27Jan 15
20072,638.842,635.15Jan 12,641.50Jun 28
20062,636.302,634.36Nov 302,638.31Jan 1
20052,640.092,638.34Dec 302,642.77Jun 16
20042,640.172,638.62Oct 52,641.76Apr 27
20032,640.082,638.57Aug 282,641.34Sep 13
20022,639.942,638.39Oct 12,641.04Apr 18
2001 (265 days)2,641.062,639.83Jan 12,643.08Jun 1
20002,641.432,639.40Oct 202,643.35Jul 1
1999 (227 days)2,643.072,641.87Dec 152,645.06Jun 28
19982,643.632,640.72Oct 262,645.88Mar 29
19972,643.442,638.79Jan 82,646.40Jun 18
1996 (92 days)2,638.982,638.67Nov 122,652.45Oct 1

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

Monthly averages

MonthAverageLowestHighest
January2,630.272,612.472,644.66
February2,630.652,612.452,645.08
March2,630.792,611.922,645.88
April2,631.252,611.392,645.86
May2,631.472,610.642,646.30
June2,631.842,609.992,646.40
July2,631.662,609.082,646.24
August2,630.532,607.892,645.43
September2,630.292,607.082,644.98
October2,630.132,606.672,652.45
November2,630.552,612.972,644.18
December2,630.312,612.642,644.48

Download

Daily levels as CSV (10,598 rows; credit the original agencies listed below)