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Merrimack River @ Concord, Nh
Merrimack River at Concord
 Total Drainage Area: 2,385 sq. miles 
 Drainage Area Controlled by Corps Dams: 1,555 sq. miles (65%) 
 Warning Flow/Stage: ?? cfs / 10.0 feet 
 Flood Flow/Stage: ?? cfs / 13.7 feet 
Date Time
(Eastern)		 Stage
(ft)		 Flow
(cfs)		 CSM
(cfs / sq. mi.)
Dec-12 12:30 pm 3.40 2,566 1.1
Dec-12 11:30 am 3.38 2,535 1.1
Dec-12 10:30 am 3.38 2,535 1.1
Dec-12 09:30 am 3.39 2,551 1.1
Dec-12 08:30 am 3.40 2,566 1.1
Dec-12 07:30 am 3.35 2,489 1.0
Dec-12 06:30 am 3.39 2,551 1.1
Dec-12 05:30 am 3.40 2,566 1.1
Dec-12 04:30 am 3.35 2,489 1.0
Dec-12 03:30 am 3.38 2,535 1.1
Dec-12 02:30 am 3.33 2,458 1.0
Dec-12 01:30 am 3.28 2,381 1.0
Dec-12 12:30 am 3.31 2,427 1.0
Dec-11 11:30 pm 3.27 2,366 1.0
Dec-11 10:30 pm 3.25 2,335 1.0
Dec-11 09:30 pm 3.30 2,412 1.0
Dec-11 08:30 pm 3.32 2,443 1.0
Dec-11 07:30 pm 3.28 2,381 1.0
Dec-11 06:30 pm 3.32 2,443 1.0
Dec-11 05:30 pm 3.41 2,581 1.1
Dec-11 04:30 pm 3.42 2,597 1.1
Dec-11 03:30 pm 3.38 2,535 1.1
Dec-11 02:30 pm 3.45 2,643 1.1
Dec-11 01:30 pm 3.43 2,612 1.1
Dec-11 12:30 pm 3.42 2,597 1.1
Report Generated December 12, 2025 06:40 pm