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Photograph of the Hackensack River at Rivervale

Hackensack River at Rivervale

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Summary of June 28-29, 2006 flooding in the New Jersey part of the Delaware River Basin

  • Rain fell over the Delaware River Basin every day from June 23 to June 28, 2006. Total rainfall ranged from 3 to 6.5 inches across the New Jersey part of the basin and 7 to 15 inches in northeastern Pennsylvania. The New York part of the basin received 6 to 14 inches during the same period. The heaviest rainfall occured on June 27th.
  • Most flooding in New Jersey occurred along the mainstem of the Delaware River. Peak stages at the Montague and Delaware Water Gap gages averaged 0.5 foot higher than the April 2005 peaks. At the Belvidere, Riegelsville, and Trenton gages, the peak stages were slightly lower than the April 2005 peaks. Peak stages at all locations were 3 to 5 feet lower than the August 1955 historical peak of record.
  • Gages along the Delaware River recorded peak flow consistent with 70-year to greater than 100-year recurrence interval floods. The 70-year recurrence interval flood has a 1.4 percent probability of occurrence in any given year and the 100-year recurrence interval flood has a 1.0 percent probability of occurrence in any given year.
  • Peak flows on tributaries to the Delaware River in New Jersey were less than the 5-year recurrence interval flood, which has a greater than 20 percent probability of occurrence in any given year.

Summary of provisional flood peaks at U.S. Geological Survey (USGS) gaging stations on selected streams in New Jersey during June 28-29, 2006.

[mi2, square miles; ft3/s, cubic feet per second; ft3/s/mi2, cubic feet per second per square mile; >, greater than; --, no data; EDT, eastern daylight time; NWS, National Weather Service; hrs, hours; Est, estimated]

Station numberStation nameDrainage area
(mi2)
Peak discharge (ft3/s)Peak discharge (ft3/s/mi2)USGS Peak gage height (ft)NWS Peak gage height (ft)Time (hrs, EDT)Date of peak dischargeRemarksRecurrence interval (years)Years of record
Delaware River Basin Gages
01438500DELAWARE RIVER AT MONTAGUE, NJ3,480212,00060.932.16--221506/28/2006June 2006 peak7071
206,00059.231.69--160004/03/2005April 2005 peak55
250,00071.835.15-----08/19/1955Historic peak of record>100
01440200 DELAWARE RIVER NEAR DELAWARE WATER GAP, NJ 3,850 225,000 58.4 33.87 -- Est 0400 06/29/2006 June 2006 peak -- 38
215,000 55.8 33.25 -- 2300 04/03/2005 April 2005 peak --
260,000 67.5 37.4 ---- 08/19/1955 Historic peak of record --
01446500 DELAWARE RIVER AT BELVIDERE, NJ 4,540 225,000 49.6 27.16 -- 1130 06/29/2006 June 2006 peak >100 85
226,000 49.8 27.22 -- 0315 04/04/2005 April 2005 peak >100
273,000 60.1 30.21 --- 08/19/1955 Historic peak of record >100
01446995 DELAWARE RIVER AT US RT 22 AT PHILLIPSBURG, NJ 4,717 -- -- 37.09 -- 1215 06/29/2006 June 2006 peak -- --
---- 37.2 -- -- 04/04/2005 April 2005 peak --
---- 43.7 ---- 08/19/1955 Historic peak of record --
01457500 DELAWARE R AT RIEGELSVILLE, NJ 6,330 254,000 40.1 33.62 -- Est 1500 06/29/2006 June 2006 peak >100 101
262,000 41.4 34.07 -- 0700 04/04/2005 April 2005 peak >100
340,000 53.7 38.85 ---- 08/19/1955 Historic peak of record >100
01458500 DELAWARE RIVER AT FRENCHTOWN, NJ 6,420 -- -- 23.4 23.4 -- 06/29/2006 June 2006 peak -- --
---- 23.6 23.6 -- 04/04/2005 April 2005 peak --
---- 27.79 27.79 -- 08/20/1955 Historic peak of record --
01461500 DELAWARE RIVER AT STOCKTON, NJ 6,556 -- -- 79.35 25.35 -- 06/29/2006 June 2006 peak -- --
---- 80.35 26.35 -- 04/04/2005 April 2005 peak --
---- 84.4 30.4 -- 08/20/1955 Historic peak of record --
01462000 DELAWARE RIVER AT LAMBERTVILLE, NJ 6,680 -- -- 68.08 19.0 -- 06/29/2006 June 2006 peak -- --
---- 68.6 19.6 -- 04/04/2005 April 2005 peak --
---- 73.27 24.27 -- 08/20/1955 Historic peak of record --
01462500 DELAWARE RIVER AT WASHINGTON CROSSING, NJ 6,735 -- -- 48.54 22.5 -- 06/29/2006 June 2006 peak -- --
---- 49.1 23.1 -- 04/04/2005 April 2005 peak --
---- 53.77 27.77 -- 08/20/1955 Historic peak of record --
01463500 DELAWARE RIVER AT TRENTON, NJ 6,780 237,000 35.0 25.09 -- 2045 06/29/2006 June 2006 peak 75 104
242,000 35.7 25.33 -- 1430 04/04/2005 April 2005 peak 80
329,000 48.5 28.6 ---- 08/20/1955 Historic peak of record >100

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