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

TIDE TIMES for Saturday, July 4, 2026
The tide is currently rising in Prisoners Point, San Joaquin River, CA.
Next low tide : 3:16 pm (-0.1 ft)
Next high tide : in 1h 12m at 7:53 am (3.4 ft)
Sunset today : 8:32 pm
Sunrise tomorrow : 5:48 am
Moon phase : Waning Gibbous (80% illuminated)
Tide Station Location : Station #9415149
Common Questions About Tides

Prisoners Point, San Joaquin River, CA Tides - Apr 1994

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri7:593.610:282.82:231.14:150.05:506:29Third Quarter1Fri
2Sat9:023.411:372.83:291.25:240.05:496:30Third Quarter2Sat
3Sun11:253.15:491.27:280.06:477:30Third Quarter3Sun
4Mon1:392.912:562.97:101.18:260.06:467:31Third Quarter4Mon
5Tue2:343.12:112.98:220.99:160.06:447:32Waning Crescent5Tue
6Wed3:223.23:122.99:240.79:590.06:437:33Waning Crescent6Wed
7Thu4:033.34:042.910:180.410:370.26:417:34Waning Crescent7Thu
8Fri4:403.44:522.911:060.311:100.36:407:35Waning Crescent8Fri
9Sat5:103.45:362.811:510.211:390.56:397:36New Moon9Sat
10Sun5:353.46:202.812:320.16:377:37New Moon10Sun
11Mon5:543.47:042.812:040.71:110.16:367:38New Moon11Mon
12Tue6:093.57:492.712:290.91:470.16:347:39New Moon12Tue
13Wed6:313.68:362.612:581.02:200.16:337:40Waxing Crescent13Wed
14Thu7:003.69:272.61:321.12:510.16:317:41Waxing Crescent14Thu
15Fri7:373.610:222.52:131.23:250.16:307:42Waxing Crescent15Fri
16Sat8:203.511:202.53:001.24:080.16:287:43Waxing Crescent16Sat
17Sun9:113.33:561.35:030.16:277:43First Quarter17Sun
18Mon12:192.510:12 AM3.15:021.36:070.16:267:44First Quarter18Mon
19Tue1:122.611:24 AM2.96:171.27:080.16:247:45First Quarter19Tue
20Wed1:592.712:482.87:321.08:010.16:237:46First Quarter20Wed
21Thu2:402.92:082.88:380.78:480.26:227:47Waxing Gibbous21Thu
22Fri3:163.13:162.99:380.49:310.36:207:48Waxing Gibbous22Fri
23Sat3:483.44:183.010:330.110:130.46:197:49Waxing Gibbous23Sat
24Sun4:203.65:163.011:27-0.110:550.66:187:50Full Moon24Sun
25Mon4:543.96:133.112:20-0.26:167:51Full Moon25Mon
26Tue5:304.07:103.11:12-0.36:157:52Full Moon26Tue
27Wed6:104.18:093.012:281.02:05-0.36:147:53Waning Gibbous27Wed
28Thu6:544.09:093.01:191.12:59-0.36:137:54Waning Gibbous28Thu
29Fri7:423.810:103.02:141.23:54-0.36:117:55Waning Gibbous29Fri
30Sat8:363.511:123.03:151.24:50-0.26:107:56Third Quarter30Sat
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 11:34 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 80% 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 Gibbous (80% 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