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

TIDE TIMES for Thursday, July 9, 2026
The tide is currently falling in Prisoners Point, San Joaquin River, CA.
Next low tide : in 3h 50m at 8:15 am (0.5 ft)
Next high tide : 2:11 pm (2.3 ft)
Sunset today : 8:31 pm
Sunrise tomorrow : 5:51 am
Moon phase : Waning Crescent (28% illuminated)
Tide Station Location : Station #9415149
Common Questions About Tides

Prisoners Point, San Joaquin River, CA Tides - Nov 1985

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri8:252.66:083.71:420.112:461.56:325:07Waning Gibbous1Fri
2Sat9:232.66:503.62:180.11:341.66:335:06Waning Gibbous2Sat
3Sun10:222.57:403.43:020.12:311.66:345:05Waning Gibbous3Sun
4Mon11:182.68:393.23:580.13:381.66:355:04Third Quarter4Mon
5Tue12:092.64:590.14:531.56:365:03Third Quarter5Tue
6Wed12:532.75:570.06:081.26:375:02Third Quarter6Wed
7Thu1:312.86:470.07:150.96:385:01Waning Crescent7Thu
8Fri12:372.82:033.07:310.08:140.56:395:00Waning Crescent8Fri
9Sat1:492.92:323.38:100.29:090.26:404:59Waning Crescent9Sat
10Sun2:522.93:003.58:490.410:020.06:424:58Waning Crescent10Sun
11Mon3:533.03:293.89:280.610:56-0.26:434:57New Moon11Mon
12Tue4:523.04:024.010:090.911:49-0.36:444:56New Moon12Tue
13Wed5:513.04:404.210:541.16:454:55New Moon13Wed
14Thu6:532.95:214.212:43-0.411:44 AM1.36:464:55Waxing Crescent14Thu
15Fri7:552.96:074.11:38-0.312:381.46:474:54Waxing Crescent15Fri
16Sat8:572.96:593.82:34-0.31:401.56:484:53Waxing Crescent16Sat
17Sun9:582.98:013.43:32-0.22:491.56:494:53First Quarter17Sun
18Mon10:572.99:183.14:30-0.14:061.46:504:52First Quarter18Mon
19Tue11:513.010:512.85:26-0.15:251.26:514:51First Quarter19Tue
20Wed12:413.16:180.06:390.96:524:51First Quarter20Wed
21Thu12:142.61:263.27:050.07:430.66:534:50Waxing Gibbous21Thu
22Fri1:232.52:043.37:460.28:400.36:544:50Waxing Gibbous22Fri
23Sat2:232.52:373.48:220.49:310.16:554:49Waxing Gibbous23Sat
24Sun3:182.53:043.48:550.710:180.06:564:49Waxing Gibbous24Sun
25Mon4:092.53:253.59:240.911:02-0.16:574:48Full Moon25Mon
26Tue5:002.63:413.69:541.211:43-0.16:584:48Full Moon26Tue
27Wed5:502.64:003.710:261.46:594:48Full Moon27Wed
28Thu6:392.74:283.812:21-0.111:04 AM1.67:004:47Full Moon28Thu
29Fri7:282.75:033.812:570.011:46 AM1.77:014:47Waning Gibbous29Fri
30Sat8:162.75:443.81:300.012:321.77:024:47Waning Gibbous30Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9415149)

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

Show All
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 11:13 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 transitional phase. Tonight's moon is 28% 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 Waning Crescent (28% 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