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

TIDE TIMES for Saturday, July 11, 2026
The tide is currently rising in Prisoners Point, San Joaquin River, CA.
Next low tide : 10:28 am (0.1 ft)
Next high tide : in 3h 16m at 1:53 am (4.3 ft)
Sunset today : 8:30 pm
Sunrise tomorrow : 5:52 am
Moon phase : Waning Crescent (18% illuminated)
Tide Station Location : Station #9415149
Common Questions About Tides

Prisoners Point, San Joaquin River, CA Tides - Sep 1983

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu2:022.57:400.56:211.56:357:36Third Quarter1Thu
2Fri12:093.83:082.78:520.47:351.56:367:35Waning Crescent2Fri
3Sat1:193.94:032.99:510.28:481.56:377:33Waning Crescent3Sat
4Sun2:294.04:513.010:410.09:551.46:387:32Waning Crescent4Sun
5Mon3:354.15:343.211:27-0.110:561.16:397:30New Moon5Mon
6Tue4:354.16:143.312:09-0.16:407:29New Moon6Tue
7Wed5:314.06:513.412:48-0.16:407:27New Moon7Wed
8Thu6:263.87:273.412:490.71:240.16:417:26Waxing Crescent8Thu
9Fri7:223.68:023.51:440.61:590.26:427:24Waxing Crescent9Fri
10Sat8:203.38:373.52:390.42:340.46:437:23Waxing Crescent10Sat
11Sun9:233.19:133.53:370.43:110.76:447:21Waxing Crescent11Sun
12Mon10:322.89:543.54:390.43:540.96:457:19First Quarter12Mon
13Tue11:462.710:443.45:470.44:451.26:467:18First Quarter13Tue
14Wed12:592.76:570.35:501.46:467:16First Quarter14Wed
15Thu2:052.88:020.27:031.56:477:15First Quarter15Thu
16Fri12:573.33:033.09:000.18:121.56:487:13Waxing Gibbous16Fri
17Sat2:043.33:523.19:500.09:121.46:497:12Waxing Gibbous17Sat
18Sun3:003.34:353.210:320.010:051.26:507:10Waxing Gibbous18Sun
19Mon3:473.35:133.211:100.010:511.16:517:08Waxing Gibbous19Mon
20Tue4:303.35:453.211:420.111:340.96:527:07Full Moon20Tue
21Wed5:093.36:123.212:080.26:527:05Full Moon21Wed
22Thu5:483.26:323.212:140.812:310.36:537:04Full Moon22Thu
23Fri6:273.16:463.312:510.712:510.46:547:02Full Moon23Fri
24Sat7:093.07:033.41:260.61:140.56:557:01Waning Gibbous24Sat
25Sun7:552.97:293.62:000.51:440.76:566:59Waning Gibbous25Sun
26Mon8:492.78:033.72:380.42:200.86:576:57Waning Gibbous26Mon
27Tue9:572.68:443.73:230.43:041.16:586:56Waning Gibbous27Tue
28Wed11:192.59:343.74:240.43:561.36:596:54Third Quarter28Wed
29Thu12:392.55:490.45:021.46:596:53Third Quarter29Thu
30Fri1:482.67:140.36:211.57:006:51Third Quarter30Fri
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 6:10 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 18% 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 Waning Crescent (18% 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