Allegheny Reservoir water level history

Daily records since 2013 · Level today: 1,319.02 ft

Highest on record

1,340.49 ft

Apr 16, 2024

Lowest on record

1,296.42 ft

Oct 30, 2025

Today

1,319.02 ft

Oct 21, 2026

Years of data

since 2013

In short

Across 12 complete years, 2016 had the lowest average level (1,316.17 ft) and 2018 the highest (1,321.12 ft).

On average the lake is lowest in January (1,305.86 ft) and highest in May (1,330.02 ft).

Loading chart…

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

Years ranked by their lowest daily level.

Year	Average	Low	Low date	High	High date
2026 (291 days)	1,323.64	1,301.09	Feb 17	1,339.05	Apr 7
2025	1,317.22	1,296.42	Oct 30	1,336.41	May 8
2024	1,319.49	1,302.98	Jan 23	1,340.49	Apr 16
2023	1,318.59	1,303.30	Dec 13	1,330.19	Apr 19
2022	1,317.94	1,302.13	Feb 2	1,331.27	Apr 9
2021	1,320.09	1,302.49	Feb 24	1,336.42	Jul 21
2020	1,316.36	1,299.10	Oct 29	1,331.48	May 18
2019	1,318.64	1,302.18	Jan 14	1,334.04	Jun 23
2018	1,321.12	1,300.72	Jan 11	1,334.05	Apr 18
2017	1,319.22	1,302.94	Feb 6	1,333.52	Apr 24
2016	1,316.17	1,302.97	Feb 17	1,331.48	May 5
2015	1,318.12	1,298.88	Mar 11	1,331.35	Jul 4
2014	1,318.73	1,300.44	Feb 20	1,337.14	May 19
2013 (159 days)	1,316.10	1,302.52	Nov 24	1,328.89	Jul 26

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

Month	Average	Lowest	Highest
January	1,305.86	1,300.72	1,321.90
February	1,306.69	1,299.75	1,327.33
March	1,317.61	1,298.88	1,332.00
April	1,329.44	1,310.02	1,340.49
May	1,330.02	1,327.75	1,337.14
June	1,328.89	1,325.14	1,334.04
July	1,327.73	1,318.90	1,336.42
August	1,325.53	1,316.57	1,333.16
September	1,321.80	1,308.88	1,331.00
October	1,314.59	1,296.42	1,329.12
November	1,308.50	1,297.21	1,324.46
December	1,306.61	1,302.98	1,318.88

Daily levels as CSV (4,833 rows; credit the original agencies listed below)