Alva Bay — AK, United States

Tide times & tide chart

3.6 ft1:40am10.6 ft8:28am7.0 ft2:07pm11.3 ft8:00pmNow
Tide predictions for Alva Bay, NOAA reference highs and lows, adjusted by published offsets. High 11.3 feet on Mon 19 Oct 2026 at 20:00, low 3.6 feet on Mon 19 Oct 2026 at 01:40, above MLLW, the chart datum.
↑7:23am↓5:34pm

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 Alva Bay (America/Sitka). Heights are in feet above MLLW.
DayTideTimeHeight
Mon 19 Oct 2026Low3.6 ft
Mon 19 Oct 2026High10.6 ft
Mon 19 Oct 2026Low7.0 ft
Mon 19 Oct 2026High11.3 ft
Tue 20 Oct 2026Low3.3 ft
Tue 20 Oct 2026High11.4 ft
Tue 20 Oct 2026Low5.8 ft
Tue 20 Oct 2026High11.8 ft
Wed 21 Oct 2026Low2.7 ft
Wed 21 Oct 2026High12.6 ft
Wed 21 Oct 2026Low4.3 ft
Wed 21 Oct 2026High12.6 ft
Thu 22 Oct 2026Low2.0 ft
Thu 22 Oct 2026High13.8 ft
Thu 22 Oct 2026Low2.6 ft
Thu 22 Oct 2026High13.6 ft
Fri 23 Oct 2026Low1.5 ft
Fri 23 Oct 2026High15.1 ft
Fri 23 Oct 2026Low0.9 ft
Fri 23 Oct 2026High14.4 ft
Sat 24 Oct 2026Low1.2 ft
Sat 24 Oct 2026High16.2 ft
Sat 24 Oct 2026Low-0.6 ft
Sun 25 Oct 2026High15.1 ft
Sun 25 Oct 2026Low1.2 ft
Sun 25 Oct 2026High17.2 ft
Sun 25 Oct 2026Low-1.8 ft

Station facts

Position
55.2283° N, 131.1330° W
Time zone
America/Sitka
Datum
MLLW datum · NOAA reference highs and lows, adjusted by published offsets
Source
NOAA tide offsets from 9450460
Region
AK, 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)

How we check predictions — dated samples and their limits.

Nearby

All tide stations