Download Report Download Report to Microsoft Excel
Merrimack River at Lowell
 Total Drainage Area: 4,635 sq. miles 
 Drainage Area Controlled by Corps Dams: 1,619 sq. miles (35%) 
 Warning Flow/Stage: 28,500 cfs / 49.0 feet 
 Flood Flow/Stage: 45,100 cfs / 52.0 feet 
Date Time
(Eastern)
Stage
(ft)
Flow
(cfs)
CSM
(cfs / sq. mi.)
13 Sep 2026 03:30 PM 42.31 2,598 .6
13 Sep 2026 03:15 PM 42.31 2,598 .6
13 Sep 2026 03:00 PM 42.30 2,576 .6
13 Sep 2026 02:45 PM 42.29 2,554 .6
13 Sep 2026 02:30 PM 42.28 2,532 .6
13 Sep 2026 02:15 PM 42.29 2,554 .6
13 Sep 2026 02:00 PM 42.29 2,554 .6
13 Sep 2026 01:45 PM 42.29 2,554 .6
13 Sep 2026 01:30 PM 42.29 2,554 .6
13 Sep 2026 01:15 PM 42.22 2,402 .5
13 Sep 2026 01:00 PM 42.16 2,275 .5
13 Sep 2026 12:45 PM 42.07 2,088 .5
13 Sep 2026 12:30 PM 42.00 1,946 .4
13 Sep 2026 12:15 PM 41.92 1,789 .4
13 Sep 2026 12:00 PM 41.84 1,636 .4
13 Sep 2026 11:45 AM 41.79 1,543 .3
13 Sep 2026 11:30 AM 41.74 1,466 .3
13 Sep 2026 11:15 AM 41.72 1,436 .3
13 Sep 2026 11:00 AM 41.70 1,406 .3
13 Sep 2026 10:45 AM 41.68 1,376 .3
13 Sep 2026 10:30 AM 41.63 1,301 .3
13 Sep 2026 10:15 AM 41.59 1,244 .3
13 Sep 2026 10:00 AM 41.56 1,207 .3
13 Sep 2026 09:45 AM 41.55 1,194 .3
13 Sep 2026 09:30 AM 41.56 1,207 .3
13 Sep 2026 09:15 AM 41.56 1,207 .3
13 Sep 2026 09:00 AM 41.56 1,207 .3
13 Sep 2026 08:45 AM 41.56 1,207 .3
13 Sep 2026 08:30 AM 41.55 1,194 .3
13 Sep 2026 08:15 AM 41.54 1,182 .3
13 Sep 2026 08:00 AM 41.54 1,182 .3
13 Sep 2026 07:45 AM 41.54 1,182 .3
13 Sep 2026 07:30 AM 41.54 1,182 .3
13 Sep 2026 07:15 AM 41.54 1,182 .3
13 Sep 2026 07:00 AM 41.54 1,182 .3
13 Sep 2026 06:45 AM 41.54 1,182 .3
13 Sep 2026 06:30 AM 41.54 1,182 .3
13 Sep 2026 06:15 AM 41.54 1,182 .3
13 Sep 2026 06:00 AM 41.55 1,194 .3
13 Sep 2026 05:45 AM 41.55 1,194 .3
13 Sep 2026 05:30 AM 41.55 1,194 .3
13 Sep 2026 05:15 AM 41.55 1,194 .3
13 Sep 2026 05:00 AM 41.55 1,194 .3
13 Sep 2026 04:45 AM 41.56 1,207 .3
13 Sep 2026 04:30 AM 41.56 1,207 .3
13 Sep 2026 04:15 AM 41.57 1,219 .3
13 Sep 2026 04:00 AM 41.59 1,244 .3
13 Sep 2026 03:45 AM 41.61 1,272 .3
13 Sep 2026 03:30 AM 41.64 1,316 .3
13 Sep 2026 03:15 AM 41.67 1,361 .3
13 Sep 2026 03:00 AM 41.70 1,406 .3
13 Sep 2026 02:45 AM 41.72 1,436 .3
13 Sep 2026 02:30 AM 41.75 1,481 .3
13 Sep 2026 02:15 AM 41.80 1,562 .3
13 Sep 2026 02:00 AM 41.84 1,636 .4
13 Sep 2026 01:45 AM 41.88 1,712 .4
13 Sep 2026 01:30 AM 41.91 1,770 .4
13 Sep 2026 01:15 AM 41.94 1,828 .4
13 Sep 2026 01:00 AM 41.96 1,867 .4
13 Sep 2026 12:45 AM 41.97 1,887 .4
13 Sep 2026 12:30 AM 41.97 1,887 .4
13 Sep 2026 12:15 AM 41.97 1,887 .4
13 Sep 2026 12:00 AM 41.97 1,887 .4
12 Sep 2026 11:45 PM 41.97 1,887 .4
12 Sep 2026 11:30 PM 41.98 1,907 .4
12 Sep 2026 11:15 PM 41.98 1,907 .4
12 Sep 2026 11:00 PM 41.98 1,907 .4
12 Sep 2026 10:45 PM 41.98 1,907 .4
12 Sep 2026 10:30 PM 41.98 1,907 .4
12 Sep 2026 10:15 PM 41.98 1,907 .4
12 Sep 2026 10:00 PM 41.98 1,907 .4
12 Sep 2026 09:45 PM 41.98 1,907 .4
12 Sep 2026 09:30 PM 41.98 1,907 .4
12 Sep 2026 09:15 PM 41.98 1,907 .4
12 Sep 2026 09:00 PM 41.97 1,887 .4
12 Sep 2026 08:45 PM 41.97 1,887 .4
12 Sep 2026 08:30 PM 41.95 1,847 .4
12 Sep 2026 08:15 PM 41.92 1,789 .4
12 Sep 2026 08:00 PM 41.88 1,712 .4
12 Sep 2026 07:45 PM 41.84 1,636 .4
12 Sep 2026 07:30 PM 41.80 1,562 .3
12 Sep 2026 07:15 PM 41.79 1,543 .3
12 Sep 2026 07:00 PM 41.78 1,527 .3
12 Sep 2026 06:45 PM 41.78 1,527 .3
12 Sep 2026 06:30 PM 41.77 1,512 .3
12 Sep 2026 06:15 PM 41.77 1,512 .3
12 Sep 2026 06:00 PM 41.78 1,527 .3
12 Sep 2026 05:45 PM 41.76 1,496 .3
12 Sep 2026 05:30 PM 41.79 1,543 .3
12 Sep 2026 05:15 PM 41.78 1,527 .3
12 Sep 2026 05:00 PM 41.76 1,496 .3
12 Sep 2026 04:45 PM 41.76 1,496 .3
12 Sep 2026 04:30 PM 41.75 1,481 .3
12 Sep 2026 04:15 PM 41.73 1,451 .3
12 Sep 2026 04:00 PM 41.71 1,421 .3
12 Sep 2026 03:45 PM 41.70 1,406 .3
12 Sep 2026 03:30 PM 41.68 1,376 .3
12 Sep 2026 03:15 PM 41.68 1,376 .3
12 Sep 2026 03:00 PM 41.67 1,361 .3
12 Sep 2026 02:45 PM 41.66 1,346 .3
12 Sep 2026 02:30 PM 41.64 1,316 .3
12 Sep 2026 02:15 PM 41.63 1,301 .3
12 Sep 2026 02:00 PM 41.61 1,272 .3
12 Sep 2026 01:45 PM 41.58 1,232 .3
12 Sep 2026 01:30 PM 41.57 1,219 .3
12 Sep 2026 01:15 PM 41.56 1,207 .3
12 Sep 2026 01:00 PM 41.56 1,207 .3
12 Sep 2026 12:45 PM 41.56 1,207 .3
12 Sep 2026 12:30 PM 41.56 1,207 .3
12 Sep 2026 12:15 PM 41.55 1,194 .3
12 Sep 2026 12:00 PM 41.56 1,207 .3
12 Sep 2026 11:45 AM 41.55 1,194 .3
12 Sep 2026 11:30 AM 41.55 1,194 .3
12 Sep 2026 11:15 AM 41.55 1,194 .3
12 Sep 2026 11:00 AM 41.55 1,194 .3
12 Sep 2026 10:45 AM 41.54 1,182 .3
12 Sep 2026 10:30 AM 41.54 1,182 .3
12 Sep 2026 10:15 AM 41.53 1,170 .3
12 Sep 2026 10:00 AM 41.53 1,170 .3
12 Sep 2026 09:45 AM 41.51 1,145 .3
12 Sep 2026 09:30 AM 41.49 1,120 .2
12 Sep 2026 09:15 AM 41.46 1,083 .2
12 Sep 2026 09:00 AM 41.42 1,034 .2
12 Sep 2026 08:45 AM 41.38 988 .2
12 Sep 2026 08:30 AM 41.37 978 .2
12 Sep 2026 08:15 AM 41.37 978 .2
12 Sep 2026 08:00 AM 41.36 968 .2
12 Sep 2026 07:45 AM 41.35 957 .2
12 Sep 2026 07:30 AM 41.34 947 .2
12 Sep 2026 07:15 AM 41.32 926 .2
12 Sep 2026 07:00 AM 41.32 926 .2
12 Sep 2026 06:45 AM 41.31 916 .2
12 Sep 2026 06:30 AM 41.31 916 .2
12 Sep 2026 06:15 AM 41.31 916 .2
12 Sep 2026 06:00 AM 41.31 916 .2
12 Sep 2026 05:45 AM 41.31 916 .2
12 Sep 2026 05:30 AM 41.31 916 .2
12 Sep 2026 05:15 AM 41.30 906 .2
12 Sep 2026 05:00 AM 41.30 906 .2
12 Sep 2026 04:45 AM 41.30 906 .2
12 Sep 2026 04:30 AM 41.30 906 .2
12 Sep 2026 04:15 AM 41.29 895 .2
12 Sep 2026 04:00 AM 41.29 895 .2
12 Sep 2026 03:45 AM 41.28 885 .2
12 Sep 2026 03:30 AM 41.28 885 .2
12 Sep 2026 03:15 AM 41.27 875 .2
12 Sep 2026 03:00 AM 41.27 875 .2
12 Sep 2026 02:45 AM 41.27 875 .2
12 Sep 2026 02:30 AM 41.27 875 .2
12 Sep 2026 02:15 AM 41.27 875 .2
12 Sep 2026 02:00 AM 41.27 875 .2
12 Sep 2026 01:45 AM 41.27 875 .2
12 Sep 2026 01:30 AM 41.27 875 .2
12 Sep 2026 01:15 AM 41.27 875 .2
12 Sep 2026 01:00 AM 41.27 875 .2
12 Sep 2026 12:45 AM 41.27 875 .2
12 Sep 2026 12:30 AM 41.27 875 .2
12 Sep 2026 12:15 AM 41.27 875 .2
12 Sep 2026 12:00 AM 41.27 875 .2
11 Sep 2026 11:45 PM 41.27 875 .2
11 Sep 2026 11:30 PM 41.27 875 .2
11 Sep 2026 11:15 PM 41.27 875 .2
11 Sep 2026 11:00 PM 41.27 875 .2
11 Sep 2026 10:45 PM 41.27 875 .2
11 Sep 2026 10:30 PM 41.27 875 .2
11 Sep 2026 10:15 PM 41.27 875 .2
11 Sep 2026 10:00 PM 41.27 875 .2
11 Sep 2026 09:45 PM 41.27 875 .2
11 Sep 2026 09:30 PM 41.27 875 .2
11 Sep 2026 09:15 PM 41.27 875 .2
11 Sep 2026 09:00 PM 41.27 875 .2
11 Sep 2026 08:45 PM 41.28 885 .2
11 Sep 2026 08:30 PM 41.28 885 .2
Report Generated September 13, 2026 04:24 pm