MERRIMACK RIVER AT LAWRENCE, MA

Falling over 24 hours: gauge height down 0.28 ft. Rising or falling means a change of more than 10% in discharge (or 0.2 ft of gauge height) over 24 hours; our rule of thumb, not a USGS class.

This gauge is on the same river as our page for Merrimack River, but no agency page we read lists its species.

Guidance from the readings above and the published thresholds named with each line; not a fishing forecast, a safety guarantee or a statement about access. Local rules and closures come first.

Our page for Merrimack River, on the same river: regulations, guides and shops

USGS gauge page NWS gauge LAWM3

Checked Nov 5, 9:54 PM EST; readings refresh at most every 15 minutes and statistics daily. Provisional USGS data can be revised. Conditions change: re-check before you go. This is general guidance, not a fishing forecast, a safety guarantee or a statement about access.