Country: USA
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Afterbay Reservoir water level history

Daily records since 1995 · Level today: 364.04 ft

Highest on record
391.84 ft
Jul 7, 2025
Lowest on record
256.69 ft
Oct 4, 1997
Today
364.04 ft
Oct 23, 2026
Years of data
31
since 1995

In short

Across 29 complete years, 1998 had the lowest average level (275.16 ft) and 2006 the highest (381.20 ft).

On average the lake is lowest in September (363.55 ft) and highest in October (368.22 ft).

Afterbay Reservoir level, all years

Loading chart…

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

Each year's lowest and highest level

2492863243624001995199920032007201120152019202320261995: lowest 285.55 ft (1995-12-31), highest 285.55 ft (1995-12-31), average 285.55 ft, 1 days measured1996: lowest 274.54 ft (1996-10-09), highest 291.89 ft (1996-09-07), average 281.73 ft, 354 days measured1997: lowest 256.69 ft (1997-10-04), highest 285.80 ft (1997-02-16), average 271.95 ft, 276 days measured1998: lowest 263.37 ft (1998-01-01), highest 287.73 ft (1998-03-20), average 275.16 ft, 365 days measured1999: lowest 270.35 ft (1999-01-02), highest 382.87 ft (1999-12-21), average 304.97 ft, 352 days measured2000: lowest 374.91 ft (2000-12-31), highest 383.60 ft (2000-04-30), average 379.68 ft, 355 days measured2001: lowest 373.41 ft (2001-12-31), highest 383.94 ft (2001-04-12), average 378.17 ft, 355 days measured2002: lowest 372.86 ft (2002-03-16), highest 385.36 ft (2002-12-14), average 375.58 ft, 365 days measured2003: lowest 378.40 ft (2003-10-28), highest 387.36 ft (2003-03-21), average 381.02 ft, 363 days measured2004: lowest 376.94 ft (2004-08-29), highest 384.08 ft (2004-11-14), average 380.35 ft, 359 days measured2005: lowest 373.51 ft (2005-11-20), highest 383.26 ft (2005-12-17), average 378.77 ft, 355 days measured2006: lowest 378.37 ft (2006-11-16), highest 384.87 ft (2006-11-23), average 381.20 ft, 363 days measured2007: lowest 372.80 ft (2007-10-23), highest 382.59 ft (2007-03-30), average 377.04 ft, 362 days measured2008: lowest 372.01 ft (2008-03-03), highest 384.16 ft (2008-12-23), average 378.71 ft, 366 days measured2009: lowest 374.99 ft (2009-10-31), highest 384.25 ft (2009-01-08), average 379.83 ft, 362 days measured2010: lowest 374.87 ft (2010-09-26), highest 383.72 ft (2010-02-07), average 379.13 ft, 349 days measured2011: lowest 374.62 ft (2011-11-15), highest 384.30 ft (2011-12-01), average 379.02 ft, 359 days measured2012: lowest 373.26 ft (2012-12-25), highest 382.54 ft (2012-02-23), average 377.36 ft, 363 days measured2013: lowest 373.21 ft (2013-01-10), highest 384.65 ft (2013-08-03), average 379.34 ft, 365 days measured2014: lowest 374.64 ft (2014-10-09), highest 384.81 ft (2014-01-12), average 378.99 ft, 365 days measured2015: lowest 378.15 ft (2015-04-17), highest 384.21 ft (2015-03-07), average 380.91 ft, 365 days measured2016: lowest 377.86 ft (2016-09-27), highest 385.35 ft (2016-10-09), average 380.16 ft, 365 days measured2017: lowest 373.44 ft (2017-12-31), highest 384.57 ft (2017-04-25), average 377.88 ft, 364 days measured2018: lowest 373.29 ft (2018-01-10), highest 384.18 ft (2018-11-06), average 379.18 ft, 358 days measured2019: lowest 375.75 ft (2019-11-30), highest 386.57 ft (2019-02-24), average 379.29 ft, 365 days measured2020: lowest 374.77 ft (2020-12-19), highest 384.85 ft (2020-05-22), average 379.30 ft, 360 days measured2021: lowest 368.11 ft (2021-04-25), highest 383.31 ft (2021-03-08), average 374.59 ft, 364 days measured2022: lowest 369.71 ft (2022-01-01), highest 383.73 ft (2022-03-18), average 374.90 ft, 365 days measured2023: lowest 364.40 ft (2023-12-09), highest 381.94 ft (2023-04-06), average 374.28 ft, 362 days measured2024: lowest 366.05 ft (2024-02-14), highest 380.05 ft (2024-01-10), average 370.31 ft, 348 days measured2025: lowest 366.43 ft (2025-12-31), highest 391.84 ft (2025-07-07), average 370.38 ft, 364 days measured2026: lowest 364.12 ft (2026-10-21), highest 373.95 ft (2026-03-27), average 368.19 ft, 287 days measured
249286324362400199520032011201920261995: lowest 285.55 ft (1995-12-31), highest 285.55 ft (1995-12-31), average 285.55 ft, 1 days measured1996: lowest 274.54 ft (1996-10-09), highest 291.89 ft (1996-09-07), average 281.73 ft, 354 days measured1997: lowest 256.69 ft (1997-10-04), highest 285.80 ft (1997-02-16), average 271.95 ft, 276 days measured1998: lowest 263.37 ft (1998-01-01), highest 287.73 ft (1998-03-20), average 275.16 ft, 365 days measured1999: lowest 270.35 ft (1999-01-02), highest 382.87 ft (1999-12-21), average 304.97 ft, 352 days measured2000: lowest 374.91 ft (2000-12-31), highest 383.60 ft (2000-04-30), average 379.68 ft, 355 days measured2001: lowest 373.41 ft (2001-12-31), highest 383.94 ft (2001-04-12), average 378.17 ft, 355 days measured2002: lowest 372.86 ft (2002-03-16), highest 385.36 ft (2002-12-14), average 375.58 ft, 365 days measured2003: lowest 378.40 ft (2003-10-28), highest 387.36 ft (2003-03-21), average 381.02 ft, 363 days measured2004: lowest 376.94 ft (2004-08-29), highest 384.08 ft (2004-11-14), average 380.35 ft, 359 days measured2005: lowest 373.51 ft (2005-11-20), highest 383.26 ft (2005-12-17), average 378.77 ft, 355 days measured2006: lowest 378.37 ft (2006-11-16), highest 384.87 ft (2006-11-23), average 381.20 ft, 363 days measured2007: lowest 372.80 ft (2007-10-23), highest 382.59 ft (2007-03-30), average 377.04 ft, 362 days measured2008: lowest 372.01 ft (2008-03-03), highest 384.16 ft (2008-12-23), average 378.71 ft, 366 days measured2009: lowest 374.99 ft (2009-10-31), highest 384.25 ft (2009-01-08), average 379.83 ft, 362 days measured2010: lowest 374.87 ft (2010-09-26), highest 383.72 ft (2010-02-07), average 379.13 ft, 349 days measured2011: lowest 374.62 ft (2011-11-15), highest 384.30 ft (2011-12-01), average 379.02 ft, 359 days measured2012: lowest 373.26 ft (2012-12-25), highest 382.54 ft (2012-02-23), average 377.36 ft, 363 days measured2013: lowest 373.21 ft (2013-01-10), highest 384.65 ft (2013-08-03), average 379.34 ft, 365 days measured2014: lowest 374.64 ft (2014-10-09), highest 384.81 ft (2014-01-12), average 378.99 ft, 365 days measured2015: lowest 378.15 ft (2015-04-17), highest 384.21 ft (2015-03-07), average 380.91 ft, 365 days measured2016: lowest 377.86 ft (2016-09-27), highest 385.35 ft (2016-10-09), average 380.16 ft, 365 days measured2017: lowest 373.44 ft (2017-12-31), highest 384.57 ft (2017-04-25), average 377.88 ft, 364 days measured2018: lowest 373.29 ft (2018-01-10), highest 384.18 ft (2018-11-06), average 379.18 ft, 358 days measured2019: lowest 375.75 ft (2019-11-30), highest 386.57 ft (2019-02-24), average 379.29 ft, 365 days measured2020: lowest 374.77 ft (2020-12-19), highest 384.85 ft (2020-05-22), average 379.30 ft, 360 days measured2021: lowest 368.11 ft (2021-04-25), highest 383.31 ft (2021-03-08), average 374.59 ft, 364 days measured2022: lowest 369.71 ft (2022-01-01), highest 383.73 ft (2022-03-18), average 374.90 ft, 365 days measured2023: lowest 364.40 ft (2023-12-09), highest 381.94 ft (2023-04-06), average 374.28 ft, 362 days measured2024: lowest 366.05 ft (2024-02-14), highest 380.05 ft (2024-01-10), average 370.31 ft, 348 days measured2025: lowest 366.43 ft (2025-12-31), highest 391.84 ft (2025-07-07), average 370.38 ft, 364 days measured2026: lowest 364.12 ft (2026-10-21), highest 373.95 ft (2026-03-27), average 368.19 ft, 287 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.

  • 1998263.37 ft on Jan 1
  • 1999270.35 ft on Jan 2
  • 1996274.54 ft on Oct 9
  • 2023364.40 ft on Dec 9
  • 2024366.05 ft on Feb 14

Yearly highs and lows

YearAverageLowLow dateHighHigh date
2026 (287 days)368.19364.12Oct 21373.95Mar 27
2025370.38366.43Dec 31391.84Jul 7
2024370.31366.05Feb 14380.05Jan 10
2023374.28364.40Dec 9381.94Apr 6
2022374.90369.71Jan 1383.73Mar 18
2021374.59368.11Apr 25383.31Mar 8
2020379.30374.77Dec 19384.85May 22
2019379.29375.75Nov 30386.57Feb 24
2018379.18373.29Jan 10384.18Nov 6
2017377.88373.44Dec 31384.57Apr 25
2016380.16377.86Sep 27385.35Oct 9
2015380.91378.15Apr 17384.21Mar 7
2014378.99374.64Oct 9384.81Jan 12
2013379.34373.21Jan 10384.65Aug 3
2012377.36373.26Dec 25382.54Feb 23
2011379.02374.62Nov 15384.30Dec 1
2010379.13374.87Sep 26383.72Feb 7
2009379.83374.99Oct 31384.25Jan 8
2008378.71372.01Mar 3384.16Dec 23
2007377.04372.80Oct 23382.59Mar 30
2006381.20378.37Nov 16384.87Nov 23
2005378.77373.51Nov 20383.26Dec 17
2004380.35376.94Aug 29384.08Nov 14
2003381.02378.40Oct 28387.36Mar 21
2002375.58372.86Mar 16385.36Dec 14
2001378.17373.41Dec 31383.94Apr 12
2000379.68374.91Dec 31383.60Apr 30
1999304.97270.35Jan 2382.87Dec 21
1998275.16263.37Jan 1287.73Mar 20
1997 (276 days)271.95256.69Oct 4285.80Feb 16
1996281.73274.54Oct 9291.89Sep 7
1995 (1 days)285.55285.55Dec 31285.55Dec 31

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

Monthly averages

MonthAverageLowestHighest
January366.39263.37384.81
February367.12273.60386.57
March368.02275.85387.36
April367.26275.63384.57
May366.24276.97384.85
June365.80274.38383.83
July365.24272.45391.84
August363.89268.98384.65
September363.55262.93382.69
October368.22256.69385.35
November365.95260.01384.87
December366.38260.66385.36

Download

Daily levels as CSV (11,021 rows; credit the original agencies listed below)