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Merrimack River At Concord

Back to River Summary

Hydrograph

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

Latest Observation: Tuesday April 21st, 2026 03:30 AM EDT
River Status: Normal

	Height	Flow
Currently	6.32 ft	8.8 kcfs
Record	26.2 ft	N/A

Observation
	Date (EDT)	Stage (ft)	Flow (kcfs)
	Tuesday 04/21/2026 03:30 AM	6.32	8.80
	Tuesday 04/21/2026 03:15 AM	6.33	8.82
	Tuesday 04/21/2026 03:00 AM	6.34	8.85
	Tuesday 04/21/2026 02:45 AM	6.34	8.85
	Tuesday 04/21/2026 02:30 AM	6.34	8.85
	Tuesday 04/21/2026 02:15 AM	6.34	8.85
	Tuesday 04/21/2026 02:00 AM	6.34	8.85
	Tuesday 04/21/2026 01:45 AM	6.35	8.87
	Tuesday 04/21/2026 01:30 AM	6.35	8.87
	Tuesday 04/21/2026 01:15 AM	6.35	8.87
	Tuesday 04/21/2026 01:00 AM	6.36	8.89
	Tuesday 04/21/2026 12:45 AM	6.36	8.89
	Tuesday 04/21/2026 12:30 AM	6.37	8.91
	Tuesday 04/21/2026 12:15 AM	6.36	8.89
	Tuesday 04/21/2026 12:00 AM	6.36	8.89
	Monday 04/20/2026 11:45 PM	6.36	8.89
	Monday 04/20/2026 11:30 PM	6.36	8.89
	Monday 04/20/2026 11:15 PM	6.36	8.89
	Monday 04/20/2026 11:00 PM	6.36	8.89
	Monday 04/20/2026 10:45 PM	6.36	8.89
	Monday 04/20/2026 10:30 PM	6.36	8.89
	Monday 04/20/2026 10:15 PM	6.36	8.89
	Monday 04/20/2026 10:00 PM	6.36	8.89
	Monday 04/20/2026 09:45 PM	6.36	8.89
	Monday 04/20/2026 09:30 PM	6.35	8.87
	Monday 04/20/2026 09:15 PM	6.35	8.87
	Monday 04/20/2026 09:00 PM	6.35	8.87
	Monday 04/20/2026 08:45 PM	6.34	8.85
	Monday 04/20/2026 08:30 PM	6.34	8.85
	Monday 04/20/2026 08:15 PM	6.34	8.85

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