37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

61°
H 86°
L 52°
WSW
6mph
Low tide
11:38 am

Tides Today & Tomorrow in Blackslough Landing, San Joaquin River, CA

TIDE TIMES for Friday, September 25, 2026
The tide is currently falling in Blackslough Landing, San Joaquin River, CA.
Next low tide : in 5h 06m at 11:38 am (0.3 ft)
Next high tide : 5:37 pm (3.1 ft)
Sunset today : 6:58 pm
Sunrise tomorrow : 6:56 am
Moon phase : Full Moon (99% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Feb 1853

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue11:143.64:410.96:320.37:175:36Third Quarter1Tue
2Wed12:182.112:083.85:371.27:350.17:165:37Third Quarter2Wed
3Thu1:352.11:054.16:411.58:330.07:155:38Waning Crescent3Thu
4Fri2:452.22:034.27:451.69:28-0.17:145:39Waning Crescent4Fri
5Sat3:442.42:594.38:461.610:19-0.17:135:40Waning Crescent5Sat
6Sun4:342.63:524.39:441.611:06-0.27:125:41New Moon6Sun
7Mon5:182.74:414.210:401.511:51-0.27:115:43New Moon7Mon
8Tue5:592.85:284.011:331.37:105:44New Moon8Tue
9Wed6:392.96:133.712:32-0.112:251.27:095:45New Moon9Wed
10Thu7:192.96:593.41:12-0.11:151.07:085:46Waxing Crescent10Thu
11Fri7:582.97:463.01:500.12:050.97:075:47Waxing Crescent11Fri
12Sat8:362.98:362.62:270.32:570.87:055:48Waxing Crescent12Sat
13Sun9:152.99:302.33:040.53:520.77:045:49Waxing Crescent13Sun
14Mon9:553.010:302.13:410.84:510.77:035:50First Quarter14Mon
15Tue10:373.111:342.04:201.15:510.67:025:51First Quarter15Tue
16Wed11:233.25:061.36:500.57:015:52First Quarter16Wed
17Thu12:422.012:143.36:021.57:460.47:005:53First Quarter17Thu
18Fri1:492.01:083.57:001.68:370.36:585:55Waxing Gibbous18Fri
19Sat2:482.22:013.67:561.79:260.26:575:56Waxing Gibbous19Sat
20Sun3:382.32:523.88:481.610:110.06:565:57Waxing Gibbous20Sun
21Mon4:212.53:393.99:391.510:54-0.16:545:58Waxing Gibbous21Mon
22Tue5:012.64:253.910:291.311:35-0.26:535:59Full Moon22Tue
23Wed5:392.85:113.811:191.16:526:00Full Moon23Wed
24Thu6:162.95:593.612:14-0.212:090.96:506:01Full Moon24Thu
25Fri6:543.06:493.312:52-0.11:010.66:496:02Waning Gibbous25Fri
26Sat7:323.27:443.01:280.11:560.46:486:03Waning Gibbous26Sat
27Sun8:133.48:442.72:040.42:540.36:466:04Waning Gibbous27Sun
28Mon8:563.59:492.42:400.73:560.26:456:05Waning Gibbous28Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9415021)

Common Questions About Blackslough Landing, San Joaquin River, CA Tides

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Is this week a spring tide or neap tide in Blackslough Landing, San Joaquin River, CA?

Blackslough Landing, San Joaquin River, CA is currently in a spring phase. Tonight's moon is 99% 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 Blackslough Landing, 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 Blackslough Landing, San Joaquin River, CA?

Tide predictions for Blackslough Landing, 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 Blackslough Landing, San Joaquin River, CA?

Tide data for Blackslough Landing, San Joaquin River, CA is sourced from NOAA Station #9415021. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9415021.

What is the moon phase in Blackslough Landing, San Joaquin River, CA tonight?

Tonight the moon over Blackslough Landing, San Joaquin River, CA is Full Moon (99% illuminated). This places Blackslough Landing, 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