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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.)
17 Jul 2026 04:30 PM 1.63 1,334 .6
17 Jul 2026 04:15 PM 1.64 1,338 .6
17 Jul 2026 04:00 PM 1.64 1,338 .6
17 Jul 2026 03:45 PM 1.63 1,334 .6
17 Jul 2026 03:30 PM 1.64 1,338 .6
17 Jul 2026 03:15 PM 1.62 1,329 .6
17 Jul 2026 03:00 PM 1.63 1,334 .6
17 Jul 2026 02:45 PM 1.61 1,325 .6
17 Jul 2026 02:30 PM 1.63 1,334 .6
17 Jul 2026 02:15 PM 1.64 1,338 .6
17 Jul 2026 02:00 PM 1.63 1,334 .6
17 Jul 2026 01:45 PM 1.64 1,338 .6
17 Jul 2026 01:30 PM 1.63 1,334 .6
17 Jul 2026 01:15 PM 1.62 1,329 .6
17 Jul 2026 01:00 PM 1.63 1,334 .6
17 Jul 2026 12:45 PM 1.62 1,329 .6
17 Jul 2026 12:30 PM 1.62 1,329 .6
17 Jul 2026 12:15 PM 1.64 1,338 .6
17 Jul 2026 12:00 PM 1.61 1,325 .6
17 Jul 2026 11:45 AM 1.63 1,334 .6
17 Jul 2026 11:30 AM 1.56 1,302 .6
17 Jul 2026 11:15 AM 1.64 1,338 .6
17 Jul 2026 11:00 AM 1.65 1,343 .6
17 Jul 2026 10:45 AM 1.64 1,338 .6
17 Jul 2026 10:30 AM 1.65 1,343 .6
17 Jul 2026 10:15 AM 1.65 1,343 .6
17 Jul 2026 10:00 AM 1.66 1,347 .6
17 Jul 2026 09:45 AM 1.66 1,347 .6
17 Jul 2026 09:30 AM 1.66 1,347 .6
17 Jul 2026 09:15 AM 1.66 1,347 .6
17 Jul 2026 09:00 AM 1.66 1,347 .6
17 Jul 2026 08:45 AM 1.65 1,343 .6
17 Jul 2026 08:30 AM 1.66 1,347 .6
17 Jul 2026 08:15 AM 1.65 1,343 .6
17 Jul 2026 08:00 AM 1.66 1,347 .6
17 Jul 2026 07:45 AM 1.65 1,343 .6
17 Jul 2026 07:30 AM 1.65 1,343 .6
17 Jul 2026 07:15 AM 1.65 1,343 .6
17 Jul 2026 07:00 AM 1.66 1,347 .6
17 Jul 2026 06:45 AM 1.65 1,343 .6
17 Jul 2026 06:30 AM 1.65 1,343 .6
17 Jul 2026 06:15 AM 1.64 1,338 .6
17 Jul 2026 06:00 AM 1.65 1,343 .6
17 Jul 2026 05:45 AM 1.63 1,334 .6
17 Jul 2026 05:30 AM 1.63 1,334 .6
17 Jul 2026 05:15 AM 1.64 1,338 .6
17 Jul 2026 05:00 AM 1.64 1,338 .6
17 Jul 2026 04:45 AM 1.64 1,338 .6
17 Jul 2026 04:30 AM 1.64 1,338 .6
17 Jul 2026 04:15 AM 1.64 1,338 .6
17 Jul 2026 04:00 AM 1.64 1,338 .6
17 Jul 2026 03:45 AM 1.64 1,338 .6
17 Jul 2026 03:30 AM 1.64 1,338 .6
17 Jul 2026 03:15 AM 1.64 1,338 .6
17 Jul 2026 03:00 AM 1.64 1,338 .6
17 Jul 2026 02:45 AM 1.64 1,338 .6
17 Jul 2026 02:30 AM 1.63 1,334 .6
17 Jul 2026 02:15 AM 1.63 1,334 .6
17 Jul 2026 02:00 AM 1.63 1,334 .6
17 Jul 2026 01:45 AM 1.64 1,338 .6
17 Jul 2026 01:30 AM 1.64 1,338 .6
17 Jul 2026 01:15 AM 1.63 1,334 .6
17 Jul 2026 01:00 AM 1.63 1,334 .6
17 Jul 2026 12:45 AM 1.61 1,325 .6
17 Jul 2026 12:30 AM 1.63 1,334 .6
17 Jul 2026 12:15 AM 1.63 1,334 .6
17 Jul 2026 12:00 AM 1.63 1,334 .6
16 Jul 2026 11:45 PM 1.63 1,334 .6
16 Jul 2026 11:30 PM 1.63 1,334 .6
16 Jul 2026 11:15 PM 1.63 1,334 .6
16 Jul 2026 11:00 PM 1.63 1,334 .6
16 Jul 2026 10:45 PM 1.63 1,334 .6
16 Jul 2026 10:30 PM 1.63 1,334 .6
16 Jul 2026 10:15 PM 1.62 1,329 .6
16 Jul 2026 10:00 PM 1.63 1,334 .6
16 Jul 2026 09:45 PM 1.63 1,334 .6
16 Jul 2026 09:30 PM 1.63 1,334 .6
16 Jul 2026 09:15 PM 1.63 1,334 .6
16 Jul 2026 09:00 PM 1.63 1,334 .6
16 Jul 2026 08:45 PM 1.63 1,334 .6
16 Jul 2026 08:30 PM 1.61 1,325 .6
16 Jul 2026 08:15 PM 1.60 1,320 .6
16 Jul 2026 08:00 PM 1.61 1,325 .6
16 Jul 2026 07:45 PM 1.64 1,338 .6
16 Jul 2026 07:30 PM 1.64 1,338 .6
16 Jul 2026 07:15 PM 1.64 1,338 .6
16 Jul 2026 07:00 PM 1.64 1,338 .6
16 Jul 2026 06:45 PM 1.63 1,334 .6
16 Jul 2026 06:30 PM 1.63 1,334 .6
16 Jul 2026 06:15 PM 1.63 1,334 .6
16 Jul 2026 06:00 PM 1.65 1,343 .6
16 Jul 2026 05:45 PM 1.65 1,343 .6
16 Jul 2026 05:30 PM 1.64 1,338 .6
16 Jul 2026 05:15 PM 1.64 1,338 .6
16 Jul 2026 05:00 PM 1.62 1,329 .6
16 Jul 2026 04:45 PM 1.64 1,338 .6
16 Jul 2026 04:30 PM 1.59 1,316 .6
16 Jul 2026 04:15 PM 1.62 1,329 .6
16 Jul 2026 04:00 PM 1.63 1,334 .6
16 Jul 2026 03:45 PM 1.62 1,329 .6
16 Jul 2026 03:30 PM 1.54 1,293 .5
16 Jul 2026 03:15 PM 1.59 1,316 .6
16 Jul 2026 03:00 PM 1.61 1,325 .6
16 Jul 2026 02:45 PM 1.65 1,343 .6
16 Jul 2026 02:30 PM 1.54 1,293 .5
16 Jul 2026 02:15 PM 1.55 1,298 .5
16 Jul 2026 02:00 PM 1.56 1,302 .6
16 Jul 2026 01:45 PM 1.64 1,338 .6
16 Jul 2026 01:30 PM 1.60 1,320 .6
16 Jul 2026 01:15 PM 1.58 1,311 .6
16 Jul 2026 01:00 PM 1.65 1,343 .6
16 Jul 2026 12:45 PM 1.58 1,311 .6
16 Jul 2026 12:30 PM 1.61 1,325 .6
16 Jul 2026 12:15 PM 1.64 1,338 .6
16 Jul 2026 12:00 PM 1.55 1,298 .5
16 Jul 2026 11:45 AM 1.57 1,307 .6
16 Jul 2026 11:30 AM 1.59 1,316 .6
16 Jul 2026 11:15 AM 1.62 1,329 .6
16 Jul 2026 11:00 AM 1.62 1,329 .6
16 Jul 2026 10:45 AM 1.56 1,302 .6
16 Jul 2026 10:30 AM 1.62 1,329 .6
16 Jul 2026 10:15 AM 1.59 1,316 .6
16 Jul 2026 10:00 AM 1.63 1,334 .6
16 Jul 2026 09:45 AM 1.65 1,343 .6
16 Jul 2026 09:30 AM 1.63 1,334 .6
16 Jul 2026 09:15 AM 1.63 1,334 .6
16 Jul 2026 09:00 AM 1.63 1,334 .6
Report Generated July 17, 2026 04:55 pm