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Seneca Lake Water Level Today

Daily level, changes and history for Seneca Lake, on the Seneca River (outlet) in New York.

Updated · Source: NWS gauge GNVN6 Provisional

Water level Provisional

443.99ft

msl · 7:00 PM EST, Nov 8, 2026

  • +0.15 ftin 24 h+0.09 ft in 7 days−0.13 ft in 30 days
442444446448442444446448
  • 1 yr ago

Is Seneca Lake full?

Seneca Lake is a natural lake. Its outflow to the Seneca River is regulated at Waterloo, but there is no set full level, so this page compares the level with past years and with the National Weather Service flood stage at Geneva (448 ft). It is 0.67 ft lower than a year ago (444.66 ft on Nov 8, 2025).

Seneca Lake level history

View data table
DateLevel (ft)% full
Nov 8, 2026443.99—
Nov 7, 2026443.80—
Nov 6, 2026443.89—
Nov 5, 2026443.95—
Nov 4, 2026443.99—
Nov 3, 2026443.98—
Nov 2, 2026443.98—
Nov 1, 2026443.90—
Oct 31, 2026443.78—
Oct 30, 2026443.74—
Oct 29, 2026444.02—
Oct 28, 2026444.19—
Oct 27, 2026444.23—
Oct 26, 2026444.36—
Oct 25, 2026444.31—
Oct 24, 2026444.02—
Oct 23, 2026443.57—
Oct 22, 2026443.58—
Oct 21, 2026443.95—
Oct 20, 2026444.31—
Oct 19, 2026444.30—
Oct 18, 2026444.28—
Oct 17, 2026444.28—
Oct 16, 2026444.46—
Oct 15, 2026444.33—
Oct 14, 2026444.43—
Oct 13, 2026444.40—
Oct 12, 2026444.15—
Oct 11, 2026443.96—
Oct 10, 2026444.05—
Oct 9, 2026444.12—
  • Seneca Lake level
Source: NOAA NWPS · Daily averages since 2010

Seneca Lake on Nov 8 in past years

Seneca Lake water level on Nov 8 in past years
YearLevel (ft)vs today
2026today443.99—
2025444.66+0.67
2024445.13+1.14
2023445.30+1.31
2022445.19+1.20
2021447.55+3.56
2020444.90+0.91
2019446.03+2.04
2018446.11+2.12
2017446.11+2.12
2016445.60+1.61

Today’s level is the lowest for Nov 8 in records going back to 2011.

Lake facts

Highest since 2010
447.82 ftNov 1, 2021
Lowest since 2010
443.57 ftOct 23, 2026
Data since
Dec 7, 2010
Dam
Waterloo Dam
River
Seneca River (outlet)
Gauge location
42.8680, −76.9410

Records cover Dec 7, 2010 to today (daily averages).

Weather on the lake

  1. Tonight43°FLowW 8–18 mphRain Showers Likely
  2. Monday52°FHighLow 40°FNW 12–20 mphRain Showers Likely then Mostly Cloudy
  3. Tuesday60°FHighLow 41°FSW 7–14 mphPartly Sunny
  4. Wednesday56°FHighLow 39°FNW 2–8 mphPartly Sunny
  5. Thursday46°FHighLow 34°FE 3–8 mphLight Rain
  6. Friday40°FHighLow 32°FN 13 mphRain and Snow Likely
  7. Saturday41°FHighLow 33°FNW 13 mphChance Rain and Snow

Forecast: National Weather Service for the dam area (42.87, −76.94). Wind speeds are forecasts, not measurements.

Nearby lakes

Quick answers

Is Seneca Lake rising or falling?
It is rising: +0.09 ft in the last 7 days and +0.15 ft in 24 hours, to 443.99 ft on 7:00 PM EST, Nov 8, 2026 (NOAA National Water Prediction Service).
What is the highest level in our data?
Seneca Lake reached 447.82 ft on Nov 1, 2021. The lowest was 443.57 ft on Oct 23, 2026 (NOAA NWPS data since 2010; older records are not in this data set).
How much has Seneca Lake changed in the last year?
In the last 12 months it ranged from 443.57 ft (Oct 23, 2026) to 447.75 ft (May 1, 2026), a swing of 4.18 ft.
How often is this page updated?
This page is updated several times a day with the latest reading from NOAA National Water Prediction Service. The last reading is from 7:00 PM EST, Nov 8, 2026.

Where this data comes from

Lake level reported by the operator through the National Weather Service (gauge GNVN6, water.noaa.gov); history from the Iowa Environmental Mesonet archive of the same reports. Recent readings are provisional. Weather from the National Weather Service.

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.