Tiber Reservoir water level history

Daily records since 2006 · Level today: 2,987.02 ft

Highest on record

3,017.99 ft

Jan 27, 2009

Lowest on record

10.00 ft

Oct 15, 2006

Today

2,987.02 ft

Oct 21, 2026

Years of data

since 2006

In short

Across 18 complete years, 2025 had the lowest average level (2,980.64 ft) and 2011 the highest (2,992.29 ft).

On average the lake is lowest in October (2,980.99 ft) and highest in July (2,992.30 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 (292 days)	2,987.81	2,981.81	Jan 1	2,993.70	Jul 5
2025	2,980.64	2,977.78	Feb 23	2,983.92	Jun 27
2024	2,982.79	2,979.89	Dec 31	2,987.00	Jul 10
2023	2,984.03	2,979.45	Mar 27	2,989.99	Jun 25
2022	2,985.86	2,981.66	Mar 14	2,993.03	Jul 10
2021	2,985.74	2,982.13	May 1	2,991.21	Jun 29
2020	2,988.04	2,985.00	Dec 31	2,993.54	Jul 6
2019	2,989.28	2,981.24	Mar 21	3,001.22	Jul 5
2018	2,988.08	2,981.41	Mar 17	2,996.11	Jul 7
2017	2,986.80	2,980.42	Feb 15	2,993.01	Jun 18
2016	2,983.46	2,980.42	Apr 7	2,987.69	Jun 19
2015	2,987.84	2,983.03	Dec 31	2,993.00	Jun 17
2014	2,986.00	2,980.00	Mar 9	2,993.35	Jul 7
2013	2,986.79	2,983.06	Apr 4	2,992.54	Jul 10
2012	2,985.61	2,980.90	Apr 14	2,991.04	Jul 9
2011	2,992.29	2,983.09	Mar 12	3,011.41	Jul 20
2010	2,984.98	2,979.50	Apr 20	2,990.45	Jul 13
2009	2,988.29	2,945.32	Feb 7	3,017.99	Jan 27
2008	2,983.05	2,973.92	Apr 16	2,994.42	Jul 9
2007 (150 days)	2,977.77	2,975.64	Dec 31	2,981.25	Aug 4
2006 (1 days)	10.00	10.00	Oct 15	10.00	Oct 15

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

Month	Average	Lowest	Highest
January	2,983.02	2,974.90	3,017.99
February	2,982.32	2,945.32	3,017.82
March	2,982.83	2,974.06	3,017.75
April	2,982.90	2,967.70	2,998.89
May	2,985.50	2,974.28	2,995.74
June	2,990.92	2,982.83	3,008.62
July	2,992.30	2,983.32	3,011.41
August	2,989.66	2,979.49	3,009.88
September	2,987.53	2,977.93	3,003.27
October	2,980.99	10.00	2,995.62
November	2,984.68	2,976.32	3,008.46
December	2,983.74	2,975.64	2,988.47

Daily levels as CSV (7,014 rows; credit the original agencies listed below)