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RiverBrain

MERRIMACK RIVER AT CONCORD, NH

USGS

New Hampshire (43.20897, -71.53035) · View on map

Current reading

2,740 CFS

Gauge height: 3.27 FT

Read about 1 hour ago · Aug 26, 2026 1:30 PM EDT

Flow history — last 6 days

Runs on this gauge

No runs currently read this gauge.