Merrimack River At Concord

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Hydrograph

Stage Color Key
12 ft - Near Flood 14 ft - Minor Flood 17 ft - Moderate Flood 20 ft - Major Flood

Latest Observation: Thursday March 19th, 2026 11:30 PM EDT
River Status: Normal

  Height Flow
Currently 8.62 ft 13.8 kcfs
Record 26.2 ft N/A

Observation
  Date (EDT) Stage (ft) Flow (kcfs)
Friday 03/20/2026 12:30 AM 8.54 13.60
Friday 03/20/2026 12:15 AM 8.56 13.60
Friday 03/20/2026 12:00 AM 8.59 13.70
Thursday 03/19/2026 11:45 PM 8.60 13.70
Thursday 03/19/2026 11:30 PM 8.62 13.80
Thursday 03/19/2026 11:15 PM 8.63 13.80
Thursday 03/19/2026 11:00 PM 8.67 13.90
Thursday 03/19/2026 10:45 PM 8.69 13.90
Thursday 03/19/2026 10:30 PM 8.71 14.00
Thursday 03/19/2026 10:15 PM 8.73 14.00
Thursday 03/19/2026 10:00 PM 8.75 14.00
Thursday 03/19/2026 09:45 PM 8.78 14.10
Thursday 03/19/2026 09:30 PM 8.79 14.10
Thursday 03/19/2026 09:15 PM 8.82 14.20
Thursday 03/19/2026 09:00 PM 8.83 14.20
Thursday 03/19/2026 08:45 PM 8.86 14.30
Thursday 03/19/2026 08:30 PM 8.87 14.30
Thursday 03/19/2026 08:15 PM 8.90 14.40
Thursday 03/19/2026 08:00 PM 8.92 14.40
Thursday 03/19/2026 07:45 PM 8.94 14.50
Thursday 03/19/2026 07:30 PM 8.96 14.50
Thursday 03/19/2026 07:15 PM 8.98 14.60
Thursday 03/19/2026 07:00 PM 9.00 14.60
Thursday 03/19/2026 06:45 PM 9.03 14.70
Thursday 03/19/2026 06:30 PM 9.05 14.70
Thursday 03/19/2026 06:15 PM 9.05 14.70
Thursday 03/19/2026 06:00 PM 9.09 14.80
Thursday 03/19/2026 05:45 PM 9.10 14.80
Thursday 03/19/2026 05:30 PM 9.14 14.90
Thursday 03/19/2026 05:15 PM 9.15 14.90

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