37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

59°
H -°
L 52°
SW
1mph
Low tide
3:27 am

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

TIDE TIMES for Tuesday, September 15, 2026
The tide is currently falling in Blackslough Landing, San Joaquin River, CA.
Next low tide : in 1h 49m at 3:27 am (0.3 ft)
Next high tide : 9:29 am (2.6 ft)
Sunset today : 7:13 pm
Sunrise tomorrow : 6:47 am
Moon phase : Waxing Crescent (22% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Sep 1869

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed12:193.61:562.47:520.47:171.65:426:42Waning Crescent1Wed
2Thu1:193.82:502.68:430.28:161.55:436:40Waning Crescent2Thu
3Fri2:183.93:382.89:310.19:121.45:446:39Waning Crescent3Fri
4Sat3:144.14:233.010:180.010:081.15:456:37New Moon4Sat
5Sun4:084.15:053.211:030.011:030.95:466:36New Moon5Sun
6Mon5:014.05:473.411:470.111:580.65:466:34New Moon6Mon
7Tue5:543.86:303.612:300.25:476:33Waxing Crescent7Tue
8Wed6:493.67:143.712:540.41:130.45:486:31Waxing Crescent8Wed
9Thu7:463.28:013.81:500.31:570.75:496:30Waxing Crescent9Thu
10Fri8:462.98:503.82:480.22:430.95:506:28Waxing Crescent10Fri
11Sat9:482.79:433.73:490.23:341.25:516:26First Quarter11Sat
12Sun10:532.510:393.74:520.34:341.45:526:25First Quarter12Sun
13Mon11:592.411:383.65:550.35:381.55:526:23First Quarter13Mon
14Tue1:042.46:540.36:411.55:536:22Waxing Gibbous14Tue
15Wed12:393.52:032.57:490.37:401.45:546:20Waxing Gibbous15Wed
16Thu1:373.52:522.68:390.38:341.35:556:19Waxing Gibbous16Thu
17Fri2:313.43:342.79:250.39:241.15:566:17Waxing Gibbous17Fri
18Sat3:213.44:122.810:070.310:111.05:576:16Full Moon18Sat
19Sun4:063.44:472.910:470.310:560.85:586:14Full Moon19Sun
20Mon4:493.35:223.011:250.411:400.75:586:12Full Moon20Mon
21Tue5:313.25:563.112:020.55:596:11Full Moon21Tue
22Wed6:143.06:293.112:230.612:380.76:006:09Full Moon22Wed
23Thu6:572.97:013.21:050.51:110.86:016:08Waning Gibbous23Thu
24Fri7:432.77:323.21:490.41:421.06:026:06Waning Gibbous24Fri
25Sat8:332.58:053.22:340.42:081.26:036:05Waning Gibbous25Sat
26Sun9:282.48:433.23:250.42:211.46:046:03Waning Gibbous26Sun
27Mon10:272.39:323.24:210.42:441.56:056:01Third Quarter27Mon
28Tue11:292.310:323.25:220.43:551.66:056:00Third Quarter28Tue
29Wed12:302.36:210.36:001.66:065:58Third Quarter29Wed
30Thu1:282.47:170.27:091.46:075:57Waning Crescent30Thu
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 22% 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 Waxing Crescent (22% 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