37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

64°
H -°
L 54°
WSW
7mph
Low tide
7:15 am

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

TIDE TIMES for Saturday, September 19, 2026
The tide is currently falling in Blackslough Landing, San Joaquin River, CA.
Next low tide : in 7h 21m at 7:15 am (0.6 ft)
Next high tide : 1:25 pm (2.1 ft)
Sunset today : 7:09 pm
Sunrise tomorrow : 6:50 am
Moon phase : First Quarter (49% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Sep 1863

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue7:533.08:013.81:590.41:550.95:426:43Waning Gibbous1Tue
2Wed8:492.78:483.72:530.42:391.25:436:41Waning Gibbous2Wed
3Thu9:462.59:373.63:500.53:271.45:436:40Third Quarter3Thu
4Fri10:452.410:303.54:490.64:221.55:446:38Third Quarter4Fri
5Sat11:462.311:263.45:490.65:241.65:456:37Third Quarter5Sat
6Sun12:472.26:460.66:261.65:466:35Third Quarter6Sun
7Mon12:233.41:442.37:390.57:231.55:476:33Waning Crescent7Mon
8Tue1:203.32:332.48:260.48:171.35:486:32Waning Crescent8Tue
9Wed2:143.33:152.59:100.49:071.15:496:30Waning Crescent9Wed
10Thu3:043.33:532.79:510.49:540.95:496:29Waning Crescent10Thu
11Fri3:503.34:292.910:300.410:400.85:506:27New Moon11Fri
12Sat4:343.35:033.111:070.511:250.65:516:26New Moon12Sat
13Sun5:173.25:373.311:430.65:526:24New Moon13Sun
14Mon6:003.16:093.412:090.512:160.85:536:23New Moon14Mon
15Tue6:453.06:413.512:530.412:471.05:546:21Waxing Crescent15Tue
16Wed7:342.87:153.61:380.41:141.25:556:19Waxing Crescent16Wed
17Thu8:272.67:553.72:270.31:371.45:556:18Waxing Crescent17Thu
18Fri9:252.58:443.73:220.32:031.55:566:16First Quarter18Fri
19Sat10:282.49:423.74:230.32:491.65:576:15First Quarter19Sat
20Sun11:312.310:513.65:260.34:381.65:586:13First Quarter20Sun
21Mon12:342.46:270.26:091.55:596:12First Quarter21Mon
22Tue12:033.51:312.57:230.17:201.26:006:10Waxing Gibbous22Tue
23Wed1:143.52:232.88:150.18:220.96:016:09Waxing Gibbous23Wed
24Thu2:193.43:093.19:030.29:200.66:016:07Waxing Gibbous24Thu
25Fri3:193.43:523.49:490.210:150.36:026:05Full Moon25Fri
26Sat4:153.34:343.610:330.411:080.16:036:04Full Moon26Sat
27Sun5:073.25:153.811:160.611:580.06:046:02Full Moon27Sun
28Mon5:583.15:553.911:580.86:056:01Full Moon28Mon
29Tue6:483.06:363.912:47-0.112:401.06:065:59Waning Gibbous29Tue
30Wed7:392.87:183.81:360.01:221.26:075:58Waning Gibbous30Wed
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 neap phase. Tonight's moon is 49% 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 minimum.

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 First Quarter (49% illuminated). This places Blackslough Landing, San Joaquin River, CA in a neap tide cycle, so tidal ranges are near their weekly minimum 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