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

TIDE TIMES for Tuesday, June 30, 2026
The tide is currently falling in Prisoners Point, San Joaquin River, CA.
Next low tide (tomorrow) : in 1h 40m at 11:40 pm (1.9 ft)
Next high tide : 5:00 am (3.9 ft)
Sunset today : 8:33 pm
Sunrise tomorrow : 5:46 am
Moon phase : Full Moon (100% illuminated)
Tide Station Location : Station #9415149
Common Questions About Tides

Prisoners Point, San Joaquin River, CA Tides - Feb 2052

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu6:093.15:063.712:01-0.111:38 AM1.07:105:28New Moon1Thu
2Fri6:383.25:523.612:29-0.112:240.97:095:30Waxing Crescent2Fri
3Sat7:073.36:423.412:580.01:110.87:085:31Waxing Crescent3Sat
4Sun7:393.47:383.21:300.12:020.77:075:32Waxing Crescent4Sun
5Mon8:153.58:442.92:070.23:020.67:065:33Waxing Crescent5Mon
6Tue8:593.510:062.62:510.44:160.67:055:34First Quarter6Tue
7Wed9:513.611:352.53:420.75:390.57:045:35First Quarter7Wed
8Thu10:523.64:440.96:580.47:035:36First Quarter8Thu
9Fri12:562.612:003.65:571.18:060.27:025:37Waxing Gibbous9Fri
10Sat2:042.81:083.77:111.29:040.07:015:39Waxing Gibbous10Sat
11Sun3:033.02:083.88:191.29:54-0.17:005:40Waxing Gibbous11Sun
12Mon3:543.23:033.89:201.110:40-0.16:595:41Waxing Gibbous12Mon
13Tue4:403.33:523.810:151.011:20-0.16:585:42Full Moon13Tue
14Wed5:223.34:383.711:060.911:570.06:575:43Full Moon14Wed
15Thu6:013.45:223.611:550.86:555:44Full Moon15Thu
16Fri6:373.36:063.412:290.112:400.86:545:45Waning Gibbous16Fri
17Sat7:083.36:523.212:560.21:250.76:535:46Waning Gibbous17Sat
18Sun7:353.37:412.91:210.32:100.76:525:47Waning Gibbous18Sun
19Mon8:003.28:372.71:470.52:590.66:515:48Waning Gibbous19Mon
20Tue8:263.29:452.52:180.63:550.66:495:49Third Quarter20Tue
21Wed9:003.211:002.42:580.85:010.66:485:51Third Quarter21Wed
22Thu9:433.23:471.06:110.56:475:52Third Quarter22Thu
23Fri12:142.410:39 AM3.14:481.27:150.46:455:53Third Quarter23Fri
24Sat1:202.511:45 AM3.25:581.38:110.36:445:54Waning Crescent24Sat
25Sun2:162.712:513.27:081.38:580.16:435:55Waning Crescent25Sun
26Mon3:042.81:493.38:091.29:400.16:415:56Waning Crescent26Mon
27Tue3:452.92:413.59:041.110:170.06:405:57Waning Crescent27Tue
28Wed4:213.13:293.59:531.010:510.06:395:58New Moon28Wed
29Thu4:533.24:173.610:400.811:220.06:375:59New 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 2:20 am — 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 100% 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 Full Moon (100% 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.

LEARN MORE ABOUT OUR TIDE DATA