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Spruce Run Reservoir Water Level Today

Daily level, distance to full pool and history for Spruce Run Reservoir, on the Spruce Run (South Branch Raritan River) in New Jersey.

Updated · Source: USGS 01396790 Provisional

Water level Provisional

262.08ft

msl · 9:45 AM EST, Nov 9, 2026

  • 10.92 ftbelow full pool (273.0 ft)
  • −0.09 ftin 24 h−0.55 ft in 7 days−0.95 ft in 30 days
250255260265270275280250255260265270275280250255260265270275280
  • Full pool
  • 1 yr ago

Is Spruce Run Reservoir full?

No. Spruce Run Reservoir is 10.92 ft below full pool (273.0 ft). It is 11.71 ft higher than a year ago (250.37 ft on Nov 9, 2025).

Spruce Run Reservoir level history

View data table
DateLevel (ft)
Nov 9, 2026262.08
Nov 8, 2026262.18
Nov 7, 2026262.26
Nov 6, 2026262.33
Nov 5, 2026262.38
Nov 4, 2026262.46
Nov 3, 2026262.55
Nov 2, 2026262.63
Nov 1, 2026262.70
Oct 31, 2026262.76
Oct 30, 2026262.83
Oct 29, 2026262.91
Oct 28, 2026263.01
Oct 27, 2026263.10
Oct 26, 2026263.19
Oct 25, 2026263.29
Oct 24, 2026263.38
Oct 23, 2026263.46
Oct 22, 2026263.49
Oct 21, 2026263.50
Oct 20, 2026263.51
Oct 19, 2026263.52
Oct 18, 2026263.53
Oct 17, 2026263.54
Oct 16, 2026263.54
Oct 15, 2026263.52
Oct 14, 2026263.50
Oct 13, 2026263.47
Oct 12, 2026263.39
Oct 11, 2026263.05
Oct 10, 2026263.03
  • Spruce Run Reservoir level
  • Full pool 273.0 ft
  • Above full pool
Source: USGS · Daily averages since 2013

Spruce Run Reservoir on Nov 9 in past years

Spruce Run Reservoir water level on Nov 9 in past years
YearLevel (ft)vs todayvs full pool
2026today262.08—−10.92 ft
2025250.37−11.71−22.63 ft
2024248.55−13.53−24.45 ft
2023272.42+10.34−0.58 ft
2022253.32−8.76−19.68 ft
2021272.99+10.91−0.01 ft
2020268.53+6.45−4.47 ft
2019269.58+7.50−3.42 ft
2018273.34+11.26+0.34 ft
2017259.78−2.30−13.22 ft
2016248.89−13.19−24.11 ft

Today’s level is the highest for this date since 2023.

Lake facts

Full pool (conservation pool)
273.0 ft msl
Highest since 2013
274.69 ftSep 1, 2021
Lowest since 2013
247.93 ftDec 10, 2024
Data since
Oct 1, 2013
Dam
Spruce Run Damcompleted 1961
River
Spruce Run (South Branch Raritan River)
Owned by
New Jersey Water Supply Authority
Dam location
Hunterdon County
Gauge location
40.6436, −74.9236

Dam, river and owner from the National Inventory of Dams (USACE). Records cover Oct 1, 2013 to today (daily averages).

Spruce Run Reservoir map and depth

  • Level gauge
Shoreline © OpenStreetMap contributors · Open the full map
Average depth when full
about 25 ftcapacity ÷ surface area
Surface area
about 1,340 acresmeasured on the OpenStreetMap outline
Height of Spruce Run Dam
80 ftNational Inventory of Dams

The outline shows the mapped shoreline, not today’s water line: when the lake is low, the water stands back from it.

Weather on the lake

  1. Today59°FHighLow 37°FNW 10–15 mphMostly Sunny
  2. Tonight37°FLowW 5 mphPartly Cloudy
  3. Tuesday63°FHighLow 36°FW 5–10 mphMostly Sunny
  4. Wednesday63°FHighLow 38°FW 0–5 mphSunny
  5. Thursday60°FHighLow 38°FE 0–5 mphChance Light Rain
  6. Friday50°FHighLow 31°FN 10 mphLight Rain
  7. Saturday49°FHighLow 31°FNW 10 mphChance Light Rain

Forecast: National Weather Service for the dam area (40.64, −74.92). Wind speeds are forecasts, not measurements.

Nearby lakes

Quick answers

What is the full pool level of Spruce Run Reservoir?
273.0 ft above mean sea level, the top of its conservation pool. Above it, water is released or flows over the spillway of Spruce Run Dam.
How much does Spruce Run Reservoir need to be full?
Spruce Run Reservoir needs 10.92 ft more water to reach full pool (273.0 ft), as of Nov 9, 2026.
How deep is Spruce Run Reservoir?
Spruce Run Reservoir is about 25 ft deep on average when full: 33,758 acre-ft of storage spread over about 1,340 acres of surface. As in most reservoirs, the deepest water is in the old river channel near Spruce Run Dam.
Is Spruce Run Reservoir rising or falling?
It is falling: −0.55 ft in the last 7 days and −0.09 ft in 24 hours, to 262.08 ft on 9:45 AM EST, Nov 9, 2026 (US Geological Survey).
When was Spruce Run Reservoir last full?
It was last at or above full pool (273.0 ft) on Jun 11, 2024. On Nov 9, 2026 it was 10.92 ft below.
What is the highest level in our data?
Spruce Run Reservoir reached 274.69 ft on Sep 1, 2021. The lowest was 247.93 ft on Dec 10, 2024 (USGS data since 2013; older records are not in this data set).
How much has Spruce Run Reservoir changed in the last year?
In the last 12 months it ranged from 249.02 ft (Feb 16, 2026) to 263.54 ft (Oct 16, 2026), a swing of 14.52 ft.
How often is this page updated?
This page is updated several times a day with the latest reading from US Geological Survey. The last reading is from 9:45 AM EST, Nov 9, 2026.

Where this data comes from

Reservoir gauge 01396790 of the US Geological Survey (waterdata.usgs.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.