Tides Today & Tomorrow in Prisoners Point, San Joaquin River, CA

TIDE TIMES for Saturday, July 25, 2026
The tide is currently falling in Prisoners Point, San Joaquin River, CA.
Next low tide : in 4h 10m at 10:30 am (0.1 ft)
Next high tide : 4:30 pm (2.8 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 6:03 am
Moon phase : Waxing Gibbous (87% illuminated)
Tide Station Location : Station #9415149
Common Questions About Tides

Prisoners Point, San Joaquin River, CA Tides - Feb 1968

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu7:383.26:433.31:24-0.21:211.07:115:28Waxing Crescent1Thu
2Fri8:103.17:333.01:520.02:100.97:105:29Waxing Crescent2Fri
3Sat8:403.18:312.62:170.13:020.87:095:30Waxing Crescent3Sat
4Sun9:073.29:422.32:420.44:030.77:085:31First Quarter4Sun
5Mon9:353.211:062.23:130.75:130.67:075:32First Quarter5Mon
6Tue10:083.33:531.06:270.57:065:34First Quarter6Tue
7Wed12:302.210:50 AM3.34:451.37:350.47:055:35First Quarter7Wed
8Thu1:442.411:40 AM3.45:481.68:340.27:045:36Waxing Gibbous8Thu
9Fri2:452.612:373.56:581.79:230.17:035:37Waxing Gibbous9Fri
10Sat3:372.81:333.68:031.710:070.07:025:38Waxing Gibbous10Sat
11Sun4:212.92:263.79:011.710:45-0.17:015:39Waxing Gibbous11Sun
12Mon5:003.03:163.89:521.511:18-0.27:005:40Full Moon12Mon
13Tue5:343.04:033.810:391.311:48-0.26:595:41Full Moon13Tue
14Wed6:033.04:503.811:241.16:585:42Full Moon14Wed
15Thu6:293.05:383.712:14-0.212:090.96:565:44Full Moon15Thu
16Fri6:523.16:273.412:40-0.112:550.76:555:45Waning Gibbous16Fri
17Sat7:153.37:223.21:070.01:450.56:545:46Waning Gibbous17Sat
18Sun7:443.58:252.81:380.22:410.46:535:47Waning Gibbous18Sun
19Mon8:193.69:442.52:150.53:500.46:515:48Third Quarter19Mon
20Tue9:033.711:162.42:580.85:140.46:505:49Third Quarter20Tue
21Wed9:563.73:511.26:390.36:495:50Third Quarter21Wed
22Thu12:442.411:03 AM3.65:011.57:520.16:485:51Third Quarter22Thu
23Fri1:582.612:223.66:271.68:53-0.16:465:52Waning Crescent23Fri
24Sat2:572.91:393.67:491.69:45-0.26:455:53Waning Crescent24Sat
25Sun3:473.12:433.78:581.410:30-0.26:445:54Waning Crescent25Sun
26Mon4:313.23:363.69:561.311:09-0.26:425:55New Moon26Mon
27Tue5:113.24:243.610:481.111:44-0.26:415:56New Moon27Tue
28Wed5:463.25:083.411:350.96:405:57New Moon28Wed
29Thu6:173.25:513.212:13-0.112:200.76:385:58New Moon29Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9415149)

Common Questions About Prisoners Point, San Joaquin River, CA Tides

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What time does the tide turn (slack tide) in Prisoners Point, San Joaquin River, CA today?

Slack tide in Prisoners Point, San Joaquin River, CA is approximately 1:30 pm — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

Is this week a spring tide or neap tide in Prisoners Point, San Joaquin River, CA?

Prisoners Point, San Joaquin River, CA is currently in a spring phase. Tonight's moon is 87% illuminated. Spring tides (largest swings) occur near new and full moons; neap tides (smallest swings) occur near first and third quarter moons. Tidal ranges this week are near their weekly maximum.

What datum are Prisoners Point, San Joaquin River, CA tide heights measured from?

Tide heights on this page are measured from Mean Lower Low Water (MLLW), the U.S. NOAA standard. A height of 0 ft represents the 19-year average of each day's lower low tide. Negative values indicate a "minus tide" — water levels below that long-term reference.

What factors can affect the tide predictions for Prisoners Point, San Joaquin River, CA?

Tide predictions for Prisoners Point, San Joaquin River, CA come from NOAA's harmonic analysis and are typically accurate within about ±10 minutes on timing and ±0.5 ft on height. Actual water levels can deviate further due to sustained winds, atmospheric pressure changes, river flow, and storm surge. During major weather events, be sure to check US Harbors weather pages for factors that could impact tidal predictions.

Which NOAA station provides tide data for Prisoners Point, San Joaquin River, CA?

Tide data for Prisoners Point, San Joaquin River, CA is sourced from NOAA Station #9415149. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9415149.

What is the moon phase in Prisoners Point, San Joaquin River, CA tonight?

Tonight the moon over Prisoners Point, San Joaquin River, CA is Waxing Gibbous (87% illuminated). This places Prisoners Point, San Joaquin River, CA in a spring tide cycle, so tidal ranges are near their weekly maximum this week.

US Harbors Tidal Data

The data in our tide charts, tide tables, and tide graphs is provided by NOAA and others. These predictions are derived mathematically from numerous inputs, including data from historical tide stations and nearby locations where sensors are actively recording. As shown in the tide graph at the top of this page, “Predicted” tides (blue) are what forecasting models expect to happen. “Observed” tides (red) are those recorded by local sensors in real time, overlaid on the predictions for direct comparison. We display Observed water levels for a select group of harbors including Portland, Maine, where a physical sensor monitors water levels in real time.

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