The combination of melting snow and between 1.5 and 3.0 inches of rain produced field, poor drainage and widespread river flooding in New Jersey. Rain spread from south to north during the evening of the 25th and fell at a fairly steady rate. The heaviest rain fell during the afternoon of the 26th in the southern half of the state and the evening of the 26th in the northern half of the state. The rain ended during the evening of the 26th in the southern part of the state and the early morning of the 27th in the northern part of the state.
The steady rain was caused by a strong southerly flow of air from the Gulf of Mexico around an intense low pressure system that spent much of the 25th and 26th in Iowa before weakening and drifting to the northeast. The mild southerly flow also quickly melted the large snow pack in the central and southern part of the state. The rain ended after this low's occluded front moved through the state.

Flood in SALEM, NEW JERSEY
From 27-DEC-09 02:00:00 to 30-DEC-09 13:15:00 (EST-5)
Location: NORMA
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The Maurice River at Norma was above its 4 foot flood stage from 200 a.m EST on the 27th through 115 p.m. EST on the 30th. It crested at 4.73 feet at 445 p.m. EST on the 28th.

Flood in GLOUCESTER, NEW JERSEY
From 26-DEC-09 16:45:00 to 27-DEC-09 05:10:00 (EST-5)
Location: MULLICA HILL
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The Raccoon Creek at Swedesboro was above its 13 foot flood stage from 445 p.m. EST on the 26th through 510 a.m. EST on the 27th. It crested at 13.39 feet at 1 a.m. EST on the 27th. Event precipitation totals were 2.56 inches in Franklin, 2.13 inches in Mantua and 1.75 inches in Washington.

Flood in SOMERSET, NEW JERSEY
From 26-DEC-09 16:15:00 to 29-DEC-09 02:00:00 (EST-5)
Location: GRIGGSTOWN
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The Raritan River at Manville was above its 14 foot flood stage from 841 a.m. EST through 245 p.m. EST on the 27th. It crested at 14.53 feet at 1145 a.m. EST. Farther downstream the Raritan River at Bound Brook was above its 28 foot flood stage from 1125 a.m. EST through 615 p.m. EST on the 27th. It crested at 28.54 feet at 215 p.m. EST. The Millstone River at Griggstown was above its 10 foot flood stage from 415 p.m. EST on the 26th through 200 a.m. EST on the 29th. It crested at 14.90 feet at 945 a.m. EST on the 27th. Farther downstream, the Millstone River at Blackwells Mills was above its 9 foot flood stage from 153 a.m. EST on the 27th through 1040 a.m. EST on the 28th. It crested at 11.40 feet at 130 p.m. EST. The North Branch of the Raritan River at South Branch crested at 8.48 feet at 10 a.m. EST on the 27th. Flood stage is 7 feet. The times it went above and below flood stage were not available.
Event precipitation totals included 1.92 incheas in Skillman, 1.85 inches in Franklin, 1.75 inches in Montgomery, 1.73 inches in Pottersville, 1.44 inches in Bridgewater, 1.37 inches in Bernards and 1.21 inches in Hillsborough.

Flood in BURLINGTON, NEW JERSEY
From 26-DEC-09 20:15:00 to 30-DEC-09 11:00:00 (EST-5)
Location: PEMBERTON
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The North Branch of the Rancocas Creek at Pemberton was above its 2.5 foot flood stage from 815 p.m EST on the 26th through 1100 a.m. EST on the 30th. It crested at 3.06 feet at 100 a.m. EST on the 28th. Event precipitation totals included 2.34 inches in Medford, 2.1 inches in Moorestown, 2.02 inches in Mount Laurel, 1.92 inches in Pemberton and 1.74 inches in Mount Holly.

Flood in CAMDEN, NEW JERSEY
From 26-DEC-09 09:29:00 to 27-DEC-09 03:05:00 (EST-5)
Location: HADDONFIELD
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The Cooper River at Haddonfield was above its 2.8 foot flood stage from 929 a.m. EST on the 26th through 305 a.m. EST on the 27th. It crested at 3.08 feet at 830 p.m. EST on the 26th. Event precipitation totals included 2.14 inches in Winslow, 2.13 inches in Somerdale, 1.90 inches in Pennsauken, 1.80 inches in Berlin and 1.42 inches in Merchantville.

Flood in MORRIS, NEW JERSEY
From 27-DEC-09 07:56:00 to 29-DEC-09 21:22:00 (EST-5)
Location: POWERVILLE
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The Passaic River at Pine Brook was above its 19 foot flood stage from 1130 a.m. EST on the 28th through 922 p.m. EST on the 29th. It crested at 19.16 feet at 1230 a.m. EST on the 29th. The Rockaway River above the Boonton Reservoir was above its 5 foot flood stage from 9 a.m. EST through 636 p.m. EST on the 27th. It crested at 5.13 feet at 1 p.m. EST. The Rockaway River below the Boonton Reservoir was above its 5 foot flood stage from 756 a.m. EST on the 27th through 507 p.m. EST on the 28th. It crested at 6.12 feet at 615 p.m. EST on the 27th. Event precipitation totals included 2.88 inches in Rockaway, 2.37 inches in Parsippany, 2.31 inches in Morris Township, 2.24 inches in Randolph, 2.19 inches in Mendham, 2.05 inches in Roxbury and 1.87 inches in Mount Olive.

Flood in OCEAN, NEW JERSEY
From 26-DEC-09 17:15:00 to 28-DEC-09 13:22:00 (EST-5)
Location: PARKWAY PINES
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The North Branch of the Metedeconk at Lakewood was above its 7 foot flood stage from 515 p.m. EST on the 26th through 122 p.m. EST on the 28th. It crested at 8.59 feet at 600 a.m. EST on the 27th. Event precipitation totals included 2.78 inches in South Toms River, 2.10 inches in Berkeley Township, 2.02 inches in Brick and 1.98 inches in Lavallette.

Heavy Rain in MIDDLESEX, NEW JERSEY
From 26-DEC-09 16:00:00 to 26-DEC-09 23:00:00 (EST-5)
Location: WOODBRIDGE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Event precipitation totals included 1.90 inches in South Brunswick, 1.87 inches in North Brunswick, 1.81 inches in New Brunswick and 1.66 inches in Cranbury.

Flood in MONMOUTH, NEW JERSEY
From 26-DEC-09 18:37:00 to 27-DEC-09 16:07:00 (EST-5)
Location: SQUANKUM
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The Manasuqan River at Squankum was above its 7.5 foot flood stage from 637 p.m. EST on the 26th through 407 p.m. EST on the 27th. It crested at 8.59 feet at 530 a.m. EST on the 27th. Event precipitation totals included 2.95 inches in Colts Neck, 2.82 inches in Freehold, 2.81 inches in Howell, 2.33 inches in Middletown, 2.20 inches in Wall, 1.28 inches in Lake Como and 1.17 inches in Shrewsbury.

Heavy Rain in HUNTERDON, NEW JERSEY
From 26-DEC-09 15:00:00 to 26-DEC-09 23:00:00 (EST-5)
Location: WHITEHOUSE STATION
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Event precipitation totals included 2.09 inches in Califon, 2.02 inches in Stockton, 1.99 inches in Readington, 1.95 inches in Clinton, 1.79 inches in Flemington and 1.52 inches in Lebanon.

Heavy Rain in MERCER, NEW JERSEY
From 26-DEC-09 14:00:00 to 26-DEC-09 22:00:00 (EST-5)
Location: PRINCETON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Event precipitation totals included 2.30 inches in Pennington, 1.93 inches in Lawrence, 1.76 inches in Ewing, 1.71 inches at the Mercer County Airport and 1.60 inches in Hightstown.

Flood in ATLANTIC, NEW JERSEY
From 27-DEC-09 11:20:00 to 29-DEC-09 21:00:00 (EST-5)
Location: FOLSOM
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

Runoff from the heavy rain and snow melt started flooding on the Great Egg Harbor River on the 27th. The Great Egg Harbor River at Folsom was above its estimated 6 foot flood stage from 1120 a.m EST on the 27th through 9 p.m. EST on the 29th. It crested at 6.75 feet at 1200 p.m. EST on the 28th. Event precipitation totals included 2.71 inches at the Atlantic City International Airport, 2.51 inches in Hammonton, 2.42 inches in Folsom, 2.37 inches in Buena Vista and 2.15 inches in Estell Manor.

Heavy Rain in CAPE MAY, NEW JERSEY
From 26-DEC-09 12:00:00 to 26-DEC-09 18:00:00 (EST-5)
Location: CAPE MAY PT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Event precipitation totals included 1.91 inches in Woodbine.

Flood in CUMBERLAND, NEW JERSEY
From 27-DEC-09 02:00:00 to 30-DEC-09 13:15:00 (EST-5)
Location: VINELAND RUDYS ARPT
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The Maurice River at Norma was above its 4 foot flood stage from 200 a.m EST on the 27th through 115 p.m. EST on the 30th. It crested at 4.73 feet at 445 p.m. EST on the 28th. Event precipitation totals included 2.26 inches in Millville and 1.70 inches in Bridgeton.