Merrimack River at Bates Bridge near Haverhill — MA, United States

Tide times & tide chart

-0.7 ft2:37am2.9 ft7:47am-0.4 ft2:35pm3.8 ft8:12pmNow
Tide predictions for Merrimack River at Bates Bridge near Haverhill, computed from harmonic constituents. High 3.8 feet on Mon 19 Oct 2026 at 20:10, low -0.7 feet on Mon 19 Oct 2026 at 02:40, above MLLW, the chart datum.
↑7:02am↓5:55pm

Predictions are not observations — conditions vary with weather and river flow. Not for navigation.

Slackwater predicts tides and currents offline, on your phone — tides worldwide, currents across the US and Canada.

Download on the App StoreSlackwater

Requires iOS 26 or later.

Tide times for the next 7 days

Mon 19 Oct 2026 through Sun 25 Oct 2026. All times are local to Merrimack River at Bates Bridge near Haverhill (America/New_York). Heights are in feet above MLLW.
DayTideTimeHeight
Mon 19 Oct 2026Low-0.7 ft
Mon 19 Oct 2026High2.9 ft
Mon 19 Oct 2026Low-0.4 ft
Mon 19 Oct 2026High3.8 ft
Tue 20 Oct 2026Low-0.7 ft
Tue 20 Oct 2026High2.9 ft
Tue 20 Oct 2026Low-0.4 ft
Tue 20 Oct 2026High3.8 ft
Wed 21 Oct 2026Low-0.7 ft
Wed 21 Oct 2026High3.1 ft
Wed 21 Oct 2026Low-0.4 ft
Wed 21 Oct 2026High3.9 ft
Thu 22 Oct 2026Low-0.6 ft
Thu 22 Oct 2026High3.5 ft
Thu 22 Oct 2026Low-0.4 ft
Thu 22 Oct 2026High4.1 ft
Fri 23 Oct 2026Low-0.6 ft
Fri 23 Oct 2026High4.0 ft
Fri 23 Oct 2026Low-0.4 ft
Fri 23 Oct 2026High4.3 ft
Sat 24 Oct 2026Low-0.5 ft
Sat 24 Oct 2026High4.5 ft
Sat 24 Oct 2026Low-0.5 ft
Sun 25 Oct 2026High4.5 ft
Sun 25 Oct 2026Low-0.4 ft
Sun 25 Oct 2026High5.0 ft
Sun 25 Oct 2026Low-0.6 ft

Station facts

Position
42.7636° N, 71.0332° W
Time zone
America/New_York
Datum
MLLW datum · computed from harmonic constituents
Source
Harmonic constituents from TICON-4
Region
MA, United States

Heights are measured above chart datum. A negative height means there is that much less water than the charted depth shows.

Slackwater database (https://github.com/openwatersio/slackwater-database). Source: Hart-Davis, M., Dettmering, D., Seitz, F. (2025), TICON-4: TIdal CONstants based on GESLA-4 sea-level records, SEANOE, https://doi.org/10.17882/109129. Licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Modified: see https://github.com/openwatersio/slackwater-database#modifications-to-source-data

How we check predictions — dated samples and their limits.

Nearby

All tide stations