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

TIDE TIMES for Tuesday, June 30, 2026
The tide is currently rising in Prisoners Point, San Joaquin River, CA.
Next low tide : 1:35 pm (-0.1 ft)
Next high tide : in 5h 02m at 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 - Jun 1999

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue6:093.78:552.812:471.52:28-0.15:458:22Waning Gibbous1Tue
2Wed6:463.79:402.81:301.52:58-0.15:448:23Waning Gibbous2Wed
3Thu7:293.610:242.82:171.53:29-0.15:448:24Waning Gibbous3Thu
4Fri8:173.411:092.83:081.44:05-0.15:448:24Waning Gibbous4Fri
5Sat9:123.211:542.94:071.44:47-0.15:438:25Third Quarter5Sat
6Sun10:172.95:131.35:360.05:438:26Third Quarter6Sun
7Mon12:373.011:35 AM2.76:281.16:280.15:438:26Third Quarter7Mon
8Tue1:183.21:052.67:420.87:200.35:438:27Third Quarter8Tue
9Wed1:573.42:272.68:490.58:110.55:438:27Waning Crescent9Wed
10Thu2:353.73:372.79:500.39:010.75:428:28Waning Crescent10Thu
11Fri3:133.94:412.810:480.09:520.95:428:28Waning Crescent11Fri
12Sat3:534.15:422.911:42-0.110:451.15:428:29New Moon12Sat
13Sun4:354.36:403.012:35-0.35:428:29New Moon13Sun
14Mon5:204.37:373.11:26-0.35:428:30New Moon14Mon
15Tue6:074.38:333.212:381.42:16-0.35:428:30Waxing Crescent15Tue
16Wed6:574.19:273.21:371.43:03-0.35:428:30Waxing Crescent16Wed
17Thu7:503.810:203.22:381.43:50-0.25:428:31Waxing Crescent17Thu
18Fri8:493.511:123.33:411.34:36-0.15:438:31Waxing Crescent18Fri
19Sat9:573.14:481.25:230.05:438:31First Quarter19Sat
20Sun12:033.311:14 AM2.85:591.06:100.25:438:32First Quarter20Sun
21Mon12:523.412:322.67:090.86:560.35:438:32First Quarter21Mon
22Tue1:383.41:452.58:140.67:410.55:438:32Waxing Gibbous22Tue
23Wed2:203.52:512.59:140.38:240.85:448:32Waxing Gibbous23Wed
24Thu2:573.63:512.610:080.19:051.05:448:32Waxing Gibbous24Thu
25Fri3:293.74:452.710:570.09:451.25:448:32Waxing Gibbous25Fri
26Sat3:563.75:362.811:420.010:251.45:458:33Waxing Gibbous26Sat
27Sun4:193.86:242.912:24-0.15:458:33Full Moon27Sun
28Mon4:433.87:092.91:020.05:458:33Full Moon28Mon
29Tue5:143.97:513.01:360.05:468:33Full Moon29Tue
30Wed5:503.98:313.012:321.62:07-0.15:468:33Full Moon30Wed
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 9:17 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