Galisteo Reservoir water level history

Daily records since 2018 · Level today: 5,497.91 ft

Highest on record

5,507.52 ft

Sep 30, 2026

Lowest on record

5,496.53 ft

Apr 5, 2020

Today

5,497.91 ft

Oct 21, 2026

Years of data

since 2018

In short

Across 8 complete years, 2018 had the lowest average level (5,499.90 ft) and 2023 the highest (5,500.00 ft).

On average the lake is lowest in October (5,499.85 ft) and highest in September (5,500.01 ft).

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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 (294 days)	5,499.90	5,497.90	Oct 18	5,507.52	Sep 30
2025	5,499.99	5,498.38	Sep 14	5,503.28	Sep 7
2024	5,500.00	5,499.34	Aug 9	5,500.61	Jun 30
2023	5,500.00	5,500.00	Jan 1	5,500.00	Jan 1
2022	5,500.00	5,499.81	Jan 6	5,500.00	Jan 1
2021	5,499.96	5,498.43	May 28	5,500.00	Jan 1
2020	5,499.96	5,496.53	Apr 5	5,500.16	Jul 28
2019	5,499.99	5,498.22	Nov 8	5,500.00	Jan 1
2018	5,499.90	5,496.69	Dec 23	5,503.50	Jul 24

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

Month	Average	Lowest	Highest
January	5,500.00	5,499.81	5,500.00
February	5,499.98	5,497.51	5,500.00
March	5,500.00	5,500.00	5,500.00
April	5,499.97	5,496.53	5,500.00
May	5,499.96	5,498.43	5,500.00
June	5,499.99	5,497.92	5,500.61
July	5,499.99	5,498.42	5,503.50
August	5,499.99	5,498.61	5,502.34
September	5,500.01	5,497.78	5,507.52
October	5,499.85	5,497.78	5,502.38
November	5,499.96	5,497.92	5,500.00
December	5,499.91	5,496.69	5,500.00

Daily levels as CSV (3,214 rows; credit the original agencies listed below)