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: Friday December 5th, 2025 09:30 PM EST
River Status: Normal

  Height Flow
Currently 2.58 ft 0.0763 kcfs
Record 16.2 ft 16900 cfs

Forecast
  Date (EST) Stage (ft) Flow (kcfs)
  Friday 12/05/2025 01:00 PM 2.40 0.05
  Friday 12/05/2025 07:00 PM 2.50 0.06
  Saturday 12/06/2025 01:00 AM 2.50 0.06
  Saturday 12/06/2025 07:00 AM 2.50 0.06
  Saturday 12/06/2025 01:00 PM 2.50 0.06
  Saturday 12/06/2025 07:00 PM 2.50 0.06
  Sunday 12/07/2025 01:00 AM 2.50 0.06

Observation
  Date (EST) Stage (ft) Flow (kcfs)
Friday 12/05/2025 09:30 PM 2.58 0.08
Friday 12/05/2025 09:15 PM 2.58 0.08
Friday 12/05/2025 09:00 PM 2.58 0.08
Friday 12/05/2025 08:45 PM 2.57 0.07
Friday 12/05/2025 08:30 PM 2.57 0.07
Friday 12/05/2025 08:15 PM 2.57 0.07
Friday 12/05/2025 08:00 PM 2.57 0.07
Friday 12/05/2025 07:45 PM 2.57 0.07
Friday 12/05/2025 07:30 PM 2.57 0.07
Friday 12/05/2025 07:15 PM 2.57 0.07
Friday 12/05/2025 07:00 PM 2.57 0.07
Friday 12/05/2025 06:46 PM 2.56 0.07
Friday 12/05/2025 06:45 PM 2.56 0.07
Friday 12/05/2025 06:30 PM 2.56 0.07
Friday 12/05/2025 06:15 PM 2.56 0.07
Friday 12/05/2025 06:00 PM 2.55 0.07
Friday 12/05/2025 05:45 PM 2.55 0.07
Friday 12/05/2025 05:30 PM 2.55 0.07
Friday 12/05/2025 05:15 PM 2.54 0.07
Friday 12/05/2025 05:00 PM 2.54 0.07
Friday 12/05/2025 04:45 PM 2.53 0.07
Friday 12/05/2025 04:30 PM 2.53 0.07
Friday 12/05/2025 04:15 PM 2.52 0.07
Friday 12/05/2025 04:00 PM 2.52 0.07
Friday 12/05/2025 03:45 PM 2.51 0.06
Friday 12/05/2025 03:30 PM 2.50 0.06
Friday 12/05/2025 03:15 PM 2.50 0.06
Friday 12/05/2025 03:00 PM 2.49 0.06
Friday 12/05/2025 02:45 PM 2.49 0.06
Friday 12/05/2025 02:30 PM 2.49 0.06

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