37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

58°
H -°
L 56°
WSW
11mph
Low tide
3:32 am

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

TIDE TIMES for Tuesday, September 1, 2026
The tide is currently falling in Blackslough Landing, San Joaquin River, CA.
Next low tide : in 2h 26m at 3:32 am (0.5 ft)
Next high tide : 9:26 am (2.7 ft)
Sunset today : 7:35 pm
Sunrise tomorrow : 6:35 am
Moon phase : Waning Gibbous (77% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Feb 1907

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri7:552.87:143.31:440.01:411.27:105:27Waning Gibbous1Fri
2Sat8:332.88:032.92:190.12:341.07:105:29Waning Gibbous2Sat
3Sun9:123.09:012.62:530.33:340.97:095:30Waning Gibbous3Sun
4Mon9:533.110:092.43:270.54:410.77:085:31Third Quarter4Mon
5Tue10:383.311:242.24:030.85:480.57:075:32Third Quarter5Tue
6Wed11:293.64:501.16:530.37:065:33Third Quarter6Wed
7Thu12:412.212:253.85:551.37:530.17:055:34Waning Crescent7Thu
8Fri1:542.21:254.17:041.58:500.07:045:35Waning Crescent8Fri
9Sat2:592.42:244.38:091.59:43-0.27:035:36Waning Crescent9Sat
10Sun3:552.63:204.49:101.510:34-0.27:025:38Waning Crescent10Sun
11Mon4:442.84:144.410:091.411:22-0.37:015:39New Moon11Mon
12Tue5:292.95:054.311:061.27:005:40New Moon12Tue
13Wed6:133.05:544.012:07-0.212:011.16:585:41New Moon13Wed
14Thu6:563.16:443.712:50-0.212:550.96:575:42Waxing Crescent14Thu
15Fri7:393.17:343.31:320.01:480.86:565:43Waxing Crescent15Fri
16Sat8:213.18:262.92:130.22:420.76:555:44Waxing Crescent16Sat
17Sun9:043.19:212.52:530.43:380.66:545:45Waxing Crescent17Sun
18Mon9:483.110:192.33:350.74:370.66:525:46First Quarter18Mon
19Tue10:333.111:212.14:200.95:370.66:515:47First Quarter19Tue
20Wed11:213.25:111.26:360.56:505:48First Quarter20Wed
21Thu12:262.012:123.26:061.47:320.46:495:49First Quarter21Thu
22Fri1:312.01:053.37:021.58:230.46:475:50Waxing Gibbous22Fri
23Sat2:302.11:583.57:561.59:120.36:465:52Waxing Gibbous23Sat
24Sun3:212.32:483.68:471.59:570.26:455:53Waxing Gibbous24Sun
25Mon4:042.43:343.69:361.410:400.16:435:54Waxing Gibbous25Mon
26Tue4:442.64:173.710:231.311:200.06:425:55Full Moon26Tue
27Wed5:222.75:003.611:091.111:580.06:415:56Full Moon27Wed
28Thu5:582.85:423.511:540.96:395:57Full Moon28Thu
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 transitional phase. Tonight's moon is 77% 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 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 Waning Gibbous (77% illuminated). This places Blackslough Landing, 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