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Lake San Antonio Water Level Today

Daily level, distance to full pool and history for Lake San Antonio, on the San Antonio River in California.

Updated · Source: CDEC station ATN Provisional

Water level Provisional

737.63ft

msl · Daily reading for Nov 7, 2026

  • 42.37 ftbelow full pool (780.0 ft)
  • −0.01 ftin 24 h−0.08 ft in 7 days−0.35 ft in 30 days
730740750760770780790730740750760770780790730740750760770780790
  • Full pool
  • 1 yr ago

Is Lake San Antonio full?

No. Lake San Antonio is 42.37 ft below full pool (780.0 ft). It is 4.86 ft lower than a year ago (742.49 ft on Nov 7, 2025).

Lake San Antonio level history

View data table
DateLevel (ft)
Nov 7, 2026737.63
Nov 6, 2026737.64
Nov 5, 2026737.65
Nov 4, 2026737.67
Nov 3, 2026737.68
Nov 2, 2026737.67
Nov 1, 2026737.70
Oct 31, 2026737.71
Oct 30, 2026737.72
Oct 29, 2026737.74
Oct 28, 2026737.75
Oct 27, 2026737.76
Oct 26, 2026737.78
Oct 25, 2026737.78
Oct 24, 2026737.80
Oct 23, 2026737.81
Oct 22, 2026737.82
Oct 21, 2026737.84
Oct 20, 2026737.78
Oct 19, 2026737.79
Oct 18, 2026737.80
Oct 17, 2026737.82
Oct 16, 2026737.84
Oct 15, 2026737.86
Oct 14, 2026737.87
Oct 13, 2026737.89
Oct 12, 2026737.92
Oct 11, 2026737.93
Oct 10, 2026737.96
Oct 9, 2026737.97
Oct 8, 2026737.98
  • Lake San Antonio level
  • Full pool 780.0 ft
  • Above full pool
Source: CDEC · Daily readings since 2023

Lake San Antonio on Nov 7 in past years

Lake San Antonio water level on Nov 7 in past years
YearLevel (ft)vs todayvs full pool
2026today737.63—−42.37 ft
2025742.49+4.86−37.51 ft
2024759.75+22.12−20.25 ft
2023754.81+17.18−25.19 ft

Today’s level is the lowest for Nov 7 in records going back to 2023.

Lake facts

Full pool (conservation pool)
780.0 ft msl
Highest since 2023
769.14 ftMay 18, 2024
Lowest since 2023
730.10 ftFeb 8, 2023
Data since
Feb 8, 2023
Dam
San Antonio Damcompleted 1965
River
San Antonio River
Owned by
Monterey County Water Resources Agency
Dam location
Monterey County
Gauge location
35.7980, −120.8830

Dam, river and owner from the National Inventory of Dams (USACE). Records cover Feb 8, 2023 to today (daily averages).

Weather on the lake

  1. Tonight46°FLowN 2 mphMostly Clear
  2. Monday80°FHighLow 46°FNNE 1–5 mphSunny
  3. Tuesday80°FHighLow 44°FNNE 1–5 mphSunny
  4. Wednesday82°FHighLow 46°FSE 0–5 mphSunny
  5. Thursday75°FHighLow 46°FSSE 1–9 mphSunny
  6. Friday74°FHighLow 46°FN 1–5 mphPatchy Fog then Mostly Sunny
  7. Saturday73°FHighLow 49°FSSW 1–8 mphPatchy Fog then Mostly Sunny

Forecast: National Weather Service for the dam area (35.80, −120.88). Wind speeds are forecasts, not measurements.

Nearby lakes

Quick answers

What is the full pool level of Lake San Antonio?
780.0 ft above mean sea level, the top of its conservation pool. Above it, water is released or flows over the spillway of San Antonio Dam.
How much does Lake San Antonio need to be full?
Lake San Antonio needs 42.37 ft more water to reach full pool (780.0 ft), as of Nov 7, 2026.
Is Lake San Antonio rising or falling?
It is falling: −0.08 ft in the last 7 days and −0.01 ft in 24 hours, to 737.63 ft on Nov 7, 2026 (California Data Exchange Center).
What is the highest level in our data?
Lake San Antonio reached 769.14 ft on May 18, 2024. The lowest was 730.10 ft on Feb 8, 2023 (CDEC data since 2023; older records are not in this data set).
How much has Lake San Antonio changed in the last year?
In the last 12 months it ranged from 737.63 ft (Nov 7, 2026) to 754.33 ft (Apr 21, 2026), a swing of 16.70 ft.
How often is this page updated?
This page is updated every day with the daily reading from California Data Exchange Center. The last reading is from Nov 7, 2026.

Where this data comes from

Daily reservoir elevation from the California Data Exchange Center of the California Department of Water Resources (station ATN, cdec.water.ca.gov). Recent readings are provisional and may be revised. Weather from the National Weather Service. Dam details from the National Inventory of Dams.

Lake Levels Daily is an independent site, not affiliated with TWDB, LCRA, USACE, USGS, NOAA, TVA or any lake operator. Check official sources before making safety decisions.