Country: USA
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Hoover Reservoir water level history

Daily records since 2017 · Level today: 891.06 ft

Highest on record
897.40 ft
May 20, 2020
Lowest on record
879.55 ft
Dec 9, 2019
Today
891.06 ft
Oct 23, 2026
Years of data
9
since 2017

In short

Across 8 complete years, 2025 had the lowest average level (888.66 ft) and 2018 the highest (893.24 ft).

On average the lake is lowest in November (886.76 ft) and highest in May (893.91 ft).

Hoover Reservoir level, all years

Loading chart…

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

Each year's lowest and highest level

87888388889389820172018201920202021202220232024202520262017: lowest 885.20 ft (2017-11-01), highest 894.72 ft (2017-11-20), average 890.18 ft, 132 days measured2018: lowest 889.11 ft (2018-08-31), highest 897.30 ft (2018-04-04), average 893.24 ft, 348 days measured2019: lowest 879.55 ft (2019-12-09), highest 895.92 ft (2019-03-31), average 890.28 ft, 365 days measured2020: lowest 881.85 ft (2020-01-01), highest 897.40 ft (2020-05-20), average 890.39 ft, 366 days measured2021: lowest 888.89 ft (2021-10-23), highest 895.84 ft (2021-05-10), average 893.12 ft, 344 days measured2022: lowest 882.18 ft (2022-12-29), highest 897.04 ft (2022-02-18), average 891.19 ft, 357 days measured2023: lowest 883.05 ft (2023-01-01), highest 895.69 ft (2023-03-25), average 891.01 ft, 364 days measured2024: lowest 880.78 ft (2024-12-08), highest 897.17 ft (2024-04-03), average 889.12 ft, 366 days measured2025: lowest 880.03 ft (2025-12-09), highest 895.32 ft (2025-05-07), average 888.66 ft, 365 days measured2026: lowest 882.38 ft (2026-01-06), highest 895.65 ft (2026-05-23), average 891.66 ft, 272 days measured
8788838888938982017201920212023202520262017: lowest 885.20 ft (2017-11-01), highest 894.72 ft (2017-11-20), average 890.18 ft, 132 days measured2018: lowest 889.11 ft (2018-08-31), highest 897.30 ft (2018-04-04), average 893.24 ft, 348 days measured2019: lowest 879.55 ft (2019-12-09), highest 895.92 ft (2019-03-31), average 890.28 ft, 365 days measured2020: lowest 881.85 ft (2020-01-01), highest 897.40 ft (2020-05-20), average 890.39 ft, 366 days measured2021: lowest 888.89 ft (2021-10-23), highest 895.84 ft (2021-05-10), average 893.12 ft, 344 days measured2022: lowest 882.18 ft (2022-12-29), highest 897.04 ft (2022-02-18), average 891.19 ft, 357 days measured2023: lowest 883.05 ft (2023-01-01), highest 895.69 ft (2023-03-25), average 891.01 ft, 364 days measured2024: lowest 880.78 ft (2024-12-08), highest 897.17 ft (2024-04-03), average 889.12 ft, 366 days measured2025: lowest 880.03 ft (2025-12-09), highest 895.32 ft (2025-05-07), average 888.66 ft, 365 days measured2026: lowest 882.38 ft (2026-01-06), highest 895.65 ft (2026-05-23), average 891.66 ft, 272 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.

  • 2019879.55 ft on Dec 9
  • 2025880.03 ft on Dec 9
  • 2024880.78 ft on Dec 8
  • 2020881.85 ft on Jan 1
  • 2022882.18 ft on Dec 29

Yearly highs and lows

YearAverageLowLow dateHighHigh date
2026 (272 days)891.66882.38Jan 6895.65May 23
2025888.66880.03Dec 9895.32May 7
2024889.12880.78Dec 8897.17Apr 3
2023891.01883.05Jan 1895.69Mar 25
2022891.19882.18Dec 29897.04Feb 18
2021893.12888.89Oct 23895.84May 10
2020890.39881.85Jan 1897.40May 20
2019890.28879.55Dec 9895.92Mar 31
2018893.24889.11Aug 31897.30Apr 4
2017 (132 days)890.18885.20Nov 1894.72Nov 20

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

Monthly averages

MonthAverageLowestHighest
January890.16881.85896.16
February892.71882.76897.04
March893.80888.08896.06
April893.90892.27897.30
May893.91892.45897.40
June893.35891.61895.39
July892.49889.45895.06
August890.67886.60894.90
September889.10883.78893.73
October886.99881.78893.61
November886.76880.45894.72
December887.11879.55895.18

Download

Daily levels as CSV (3,279 rows; credit the original agencies listed below)