San Joaquin R a Channel Marker 42 nr Iselton — CA, United States

Tide times & tide chart

-0.2 ft6:40am1.8 ft1:51pm1.1 ft7:00pm2.1 ft11:53pmNow
Tide predictions for San Joaquin R a Channel Marker 42 nr Iselton, computed from harmonic constituents. High 2.2 feet on Mon 19 Oct 2026 at 00:00, low -0.2 feet on Mon 19 Oct 2026 at 06:40, above MLLW, the chart datum.
↑7:19am↓6:22pm

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

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Tide times for the next 7 days

Mon 19 Oct 2026 through Sun 25 Oct 2026. All times are local to San Joaquin R a Channel Marker 42 nr Iselton (America/Los_Angeles). Heights are in feet above MLLW.
DayTideTimeHeight
Mon 19 Oct 2026Low-0.2 ft
Mon 19 Oct 2026High1.8 ft
Mon 19 Oct 2026Low1.1 ft
Mon 19 Oct 2026High2.1 ft
Tue 20 Oct 2026Low-0.3 ft
Tue 20 Oct 2026High1.8 ft
Tue 20 Oct 2026Low0.8 ft
Wed 21 Oct 2026High2.0 ft
Wed 21 Oct 2026Low-0.3 ft
Wed 21 Oct 2026High1.9 ft
Wed 21 Oct 2026Low0.5 ft
Thu 22 Oct 2026High1.9 ft
Thu 22 Oct 2026Low-0.2 ft
Thu 22 Oct 2026High2.1 ft
Thu 22 Oct 2026Low0.3 ft
Fri 23 Oct 2026High1.9 ft
Fri 23 Oct 2026Low-0.1 ft
Fri 23 Oct 2026High2.3 ft
Fri 23 Oct 2026Low0.1 ft
Sat 24 Oct 2026High1.9 ft
Sat 24 Oct 2026Low0.2 ft
Sat 24 Oct 2026High2.6 ft
Sat 24 Oct 2026Low-0.2 ft
Sun 25 Oct 2026High1.8 ft
Sun 25 Oct 2026Low0.5 ft
Sun 25 Oct 2026High2.8 ft
Sun 25 Oct 2026Low-0.4 ft

Station facts

Position
38.1007° N, 121.6027° W
Time zone
America/Los_Angeles
Datum
MLLW datum · computed from harmonic constituents
Source
Harmonic constituents from TICON-4
Region
CA, 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.

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