Souhegan River At Merrimack

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Hydrograph

Stage Color Key
8 ft - Near Flood 9 ft - Minor Flood 11 ft - Moderate Flood 13 ft - Major Flood

Latest Observation: Monday August 3rd, 2026 04:30 PM EDT
River Status: Normal

  Height Flow
Currently 3.78 ft 0.479 kcfs
Record 16.2 ft 16900 cfs

Forecast
  Date (EDT) Stage (ft) Flow (kcfs)
  Monday 08/03/2026 02:00 PM 4.10 0.63
  Monday 08/03/2026 08:00 PM 5.20 1.27
  Tuesday 08/04/2026 02:00 AM 5.70 1.63
  Tuesday 08/04/2026 08:00 AM 5.70 1.63
  Tuesday 08/04/2026 02:00 PM 5.50 1.48
  Tuesday 08/04/2026 08:00 PM 5.30 1.34
  Wednesday 08/05/2026 02:00 AM 5.10 1.20

Observation
  Date (EDT) Stage (ft) Flow (kcfs)
Monday 08/03/2026 04:30 PM 3.78 0.48
Monday 08/03/2026 04:15 PM 3.73 0.46
Monday 08/03/2026 04:00 PM 3.68 0.44
Monday 08/03/2026 03:45 PM 3.63 0.41
Monday 08/03/2026 03:30 PM 3.59 0.40
Monday 08/03/2026 03:15 PM 3.55 0.38
Monday 08/03/2026 03:00 PM 3.51 0.36
Monday 08/03/2026 02:45 PM 3.47 0.35
Monday 08/03/2026 02:30 PM 3.44 0.33
Monday 08/03/2026 02:15 PM 3.41 0.32
Monday 08/03/2026 02:00 PM 3.38 0.31
Monday 08/03/2026 01:45 PM 3.35 0.30
Monday 08/03/2026 01:30 PM 3.33 0.29
Monday 08/03/2026 01:15 PM 3.31 0.29
Monday 08/03/2026 01:00 PM 3.28 0.27
Monday 08/03/2026 12:45 PM 3.26 0.27
Monday 08/03/2026 12:31 PM 3.25 0.26
Monday 08/03/2026 11:30 AM 3.18 0.24
Monday 08/03/2026 11:15 AM 3.17 0.24
Monday 08/03/2026 11:00 AM 3.16 0.23
Monday 08/03/2026 10:45 AM 3.15 0.23
Monday 08/03/2026 10:30 AM 3.15 0.23
Monday 08/03/2026 10:15 AM 3.14 0.23
Monday 08/03/2026 10:00 AM 3.14 0.23
Monday 08/03/2026 09:45 AM 3.14 0.23
Monday 08/03/2026 09:30 AM 3.14 0.23
Monday 08/03/2026 09:15 AM 3.14 0.23
Monday 08/03/2026 09:00 AM 3.15 0.23
Monday 08/03/2026 08:45 AM 3.15 0.23
Monday 08/03/2026 08:30 AM 3.14 0.23

Data Courtesy of the National Water Prediction Service
Script Courtesy of Dennis at East Masonville Weather with mods by Saratoga-weather.org