Rivers in New Jersey

Delaware River at Tocks Island

Warren County, New JerseyNWS TKSN4USGS 01440200Mount Holly office

Below flood stage
6.62ftStage

Observed Wed, Sep 23, 6:15 AM EDT

Flood stage
21.00 ft
Forecast crest
6.40 ftWed, Sep 23, 8:00 AM EDT
Record crest
37.40 ft1955

Open the live map with the river flood outlook

Flood stages and impacts

CategoryStage
Major flood25.00 ft
Moderate flood23.00 ft
Minor flood21.00 ft
Action20.00 ft
  1. 30.00 ftAll delaware water gap recreation resources are impacted, including natural and cultural resources, archeological sites, visitor use facilities, and infrastructure such as roads, bridges, and utilities.
  2. 25.00 ftCampsites in Worthington State Forest in New Jersey flood.
  3. 23.00 ftRoute 209 is closed.
  4. 22.00 ftMany local roads that connect to Route 209, River Road, and other park roads are closed.
  5. 21.00 ftApproach roads to the Shawnee Inn flood. Route 209 begins to flood.

Flood outlook

Chance of flooding, September to November

CategoryChance
Minor flooding6%
Moderate floodingUnder 5%
Major floodingUnder 5%

The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 28, 2026.

Crest history

14 crests on NOAA’s list since 1955.

#DateStage
1August 19, 195537.40 ft
2June 28, 200633.87 ft
3April 3, 200533.24 ft
4September 19, 200430.34 ft
5January 20, 199628.40 ft
6September 9, 201124.95 ft
7March 16, 198624.00 ft
8June 30, 197323.82 ft
9August 29, 201123.21 ft
10March 12, 201122.88 ft
11May 30, 198421.77 ft
12March 7, 201120.54 ft
13January 25, 201820.08 ft
14June 24, 197217.31 ft

Most recent crests

  • January 25, 2018: 20.08 ft
  • September 9, 2011: 24.95 ft
  • August 29, 2011: 23.21 ft
  • March 12, 2011: 22.88 ft
  • March 7, 2011: 20.54 ft
  • June 28, 2006: 33.87 ft
  • April 3, 2005: 33.24 ft
  • September 19, 2004: 30.34 ft
  • January 20, 1996: 28.40 ft
  • March 16, 1986: 24.00 ft

Nearby

Upstream, downstream and the gauges around this one.

What this means

Forecasts by the Middle Atlantic River Forecast Center. Forecasts are issued routinely year-round.

Sources

Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.