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

TIDE TIMES for Thursday, July 23, 2026
The tide is currently falling in Prisoners Point, San Joaquin River, CA.
Next low tide : in 3h 50m at 7:00 pm (1.4 ft)
Next high tide (tomorrow) : 1:31 am (3.7 ft)
Sunset today : 8:23 pm
Sunrise tomorrow : 6:01 am
Moon phase : Waxing Gibbous (72% illuminated)
Tide Station Location : Station #9415149
Common Questions About Tides

Prisoners Point, San Joaquin River, CA Tides - Sep 2079

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri10:302.69:403.44:400.63:381.06:367:35First Quarter1Fri
2Sat11:462.510:173.45:460.64:221.36:377:34First Quarter2Sat
3Sun1:022.56:560.55:181.66:387:32First Quarter3Sun
4Mon2:112.68:030.46:291.76:397:31First Quarter4Mon
5Tue12:093.33:092.89:010.37:441.76:397:29Waxing Gibbous5Tue
6Wed1:223.33:592.99:500.18:501.66:407:28Waxing Gibbous6Wed
7Thu2:273.44:413.010:330.19:451.56:417:26Waxing Gibbous7Thu
8Fri3:213.55:173.011:090.010:341.36:427:25Waxing Gibbous8Fri
9Sat4:083.55:483.111:410.011:181.16:437:23Full Moon9Sat
10Sun4:523.56:143.112:090.06:447:21Full Moon10Sun
11Mon5:363.56:343.212:000.912:330.16:457:20Full Moon11Mon
12Tue6:203.46:533.312:420.712:560.26:457:18Full Moon12Tue
13Wed7:083.27:153.51:230.51:230.46:467:17Waning Gibbous13Wed
14Thu8:013.07:453.72:070.41:550.66:477:15Waning Gibbous14Thu
15Fri9:032.88:223.92:570.42:330.86:487:14Waning Gibbous15Fri
16Sat10:192.69:063.93:570.43:181.16:497:12Third Quarter16Sat
17Sun11:462.510:003.85:150.44:141.46:507:10Third Quarter17Sun
18Mon1:072.66:430.45:271.66:517:09Third Quarter18Mon
19Tue2:172.78:000.36:531.66:517:07Third Quarter19Tue
20Wed12:293.63:142.99:030.18:151.46:527:06Waning Crescent20Wed
21Thu1:553.64:023.19:560.09:241.26:537:04Waning Crescent21Thu
22Fri3:063.64:453.210:41-0.110:240.96:547:03Waning Crescent22Fri
23Sat4:043.65:233.311:200.011:180.76:557:01New Moon23Sat
24Sun4:573.55:583.311:550.16:566:59New Moon24Sun
25Mon5:463.46:283.412:090.512:260.26:576:58New Moon25Mon
26Tue6:353.26:523.412:570.412:530.46:576:56New Moon26Tue
27Wed7:253.07:133.41:430.31:180.76:586:55Waxing Crescent27Wed
28Thu8:182.87:323.52:290.31:450.96:596:53Waxing Crescent28Thu
29Fri9:172.77:563.53:160.32:171.17:006:52Waxing Crescent29Fri
30Sat10:232.68:293.54:070.32:571.47:016:50Waxing Crescent30Sat
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 10:15 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 transitional phase. Tonight's moon is 72% 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 shifting between spring and neap.

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 (72% illuminated). This places Prisoners Point, San Joaquin River, CA in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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