Tionesta Lake water level history

Daily records since 2013 · Level today: 1,089.27 ft

Highest on record

1,136.94 ft

Apr 15, 2024

Lowest on record

1,084.77 ft

Feb 26, 2019

Today

1,089.27 ft

Oct 21, 2026

Years of data

since 2013

In short

Across 12 complete years, 2016 had the lowest average level (1,090.24 ft) and 2017 the highest (1,093.13 ft).

On average the lake is lowest in August (1,090.22 ft) and highest in April (1,096.12 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)	1,094.58	1,086.93	Feb 17	1,119.60	Apr 7
2025	1,092.40	1,086.78	Feb 6	1,110.39	May 7
2024	1,093.11	1,087.05	Dec 8	1,136.94	Apr 15
2023	1,091.05	1,085.96	Dec 22	1,105.31	Jan 6
2022	1,093.02	1,086.43	Feb 11	1,128.97	Feb 25
2021	1,090.88	1,085.35	Jan 9	1,108.59	Jul 19
2020	1,090.72	1,085.63	Jan 22	1,107.17	Dec 27
2019	1,092.73	1,084.77	Feb 26	1,125.39	Feb 10
2018	1,092.56	1,085.66	Jan 1	1,129.41	Jan 15
2017	1,093.13	1,085.28	Feb 4	1,122.85	Jan 14
2016	1,090.24	1,085.74	Jan 6	1,108.08	Jan 1
2015	1,090.73	1,086.22	Dec 14	1,113.14	Dec 30
2014	1,091.66	1,086.06	Feb 10	1,124.77	Jun 27
2013 (159 days)	1,090.41	1,086.21	Nov 7	1,121.89	Dec 24

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

Month	Average	Lowest	Highest
January	1,092.07	1,085.35	1,129.41
February	1,093.17	1,084.77	1,128.97
March	1,093.17	1,085.29	1,120.80
April	1,096.12	1,087.92	1,136.94
May	1,093.40	1,087.68	1,115.39
June	1,092.67	1,087.83	1,124.77
July	1,090.77	1,088.08	1,108.59
August	1,090.22	1,087.94	1,100.21
September	1,090.63	1,088.47	1,109.51
October	1,090.57	1,087.72	1,107.07
November	1,090.53	1,086.13	1,113.37
December	1,090.82	1,085.67	1,121.89

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