Street flooding was reported in Bound Brook from the Raritan River. Roadways were closed in Hillsborough and Montgomery Townships. Numerous rivers and creeks flooded in the county.
The North Branch of the Raritan River at the village of North Branch was above its 12.3 foot flood stage from 315 a.m. EST through 1134 a.m. EST on the 12th. It crested at 13.38 feet at 715 a.m. EST. Farther downstream, the North Branch of the Raritan River at Raritan was above its 10 foot flood stage through 1223 p.m. EST on the 12th. It crested at 10.58 feet at 9 a.m. EST on the 12th. Farther downstream, the North Branch of the Raritan River at the village of South Branch was above its 7 foot flood stage from 1110 p.m. EST on the 11th through 550 p.m. EST on the 12th. It crested at 11.09 feet at 930 a.m. EST on the 12th.
The main stem of the Raritan River at Manville was above its 12 foot flood stage from 1023 a.m. EST through 1049 p.m. EST on the 12th. It crested at 16.01 feet at 615 p.m. EST. Farther downstream the Raritan River at Bound Brook was above its 28 foot flood stage from 1005 a.m. EST on the 12th through 1243 a.m. EST on the 13th. It crested at 30.35 feet at 530 p.m. EST on the 12th.
The Millstone River at Griggstown was above its 10 foot flood stage from 1228 a.m. EST on the 12th through 656 a.m. EST on the 14th. It crested at 15.11 feet at 345 p.m. EST on the 12th. Farther downstream the Millstone River at Blackwells Mills was above its 9 foot flood stage from 840 a.m. EST on the 12th through 445 p.m. EST on the 13th. It crested at 11.88 feet at 745 p.m. EST on the 12th. Farther downstream the Millstone River at Weston was above its 12.4 foot flood stage from 1214 p.m. EST through 950 p.m. EST on the 12th. It crested at 13.27 feet at 5 p.m. EST.
Pike Run at Belle Mead was above its 7 foot flood stage from 1219 a.m. EST through 531 a.m. EST on the 12th. It crested at 7.66 feet at 2 a.m. EST. The Lamington River at Burnt Mills was above its 9.5 foot flood stage from 1130 p.m. EST on the 11th through 1109 a.m. EST on the 12th. It crested at 11.1 feet at 6 a.m. EST.
Event precipitation totals included 3.31 inches in Franklin, 3.18 inches in Bridgewater, 2.88 inches in Hillsborough and 2.85 inches in Bernardsville.