37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

64°
H 80°
L 52°
WSW
8mph
High tide
12:49 pm

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

TIDE TIMES for Friday, September 4, 2026
The tide is currently rising in Blackslough Landing, San Joaquin River, CA.
Next low tide : 4:16 pm (1.8 ft)
Next high tide : in 4h 57m at 12:49 pm (2.2 ft)
Sunset today : 7:30 pm
Sunrise tomorrow : 6:38 am
Moon phase : Third Quarter (45% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Feb 1895

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri9:433.110:262.12:570.84:550.77:105:28First Quarter1Fri
2Sat10:213.311:422.03:041.16:000.67:095:30First Quarter2Sat
3Sun11:083.63:281.47:020.47:085:31First Quarter3Sun
4Mon1:002.012:043.94:111.68:010.27:075:32Waxing Gibbous4Mon
5Tue2:132.11:074.15:251.88:560.07:065:33Waxing Gibbous5Tue
6Wed3:142.22:104.37:321.89:48-0.27:055:34Waxing Gibbous6Wed
7Thu4:052.43:094.48:501.710:37-0.37:045:35Waxing Gibbous7Thu
8Fri4:492.64:064.49:571.511:23-0.47:035:36Full Moon8Fri
9Sat5:312.85:004.210:591.27:025:37Full Moon9Sat
10Sun6:123.05:543.912:06-0.411:59 AM0.97:015:39Full Moon10Sun
11Mon6:533.26:483.512:47-0.312:580.67:005:40Waning Gibbous11Mon
12Tue7:343.47:443.11:260.01:560.46:595:41Waning Gibbous12Tue
13Wed8:173.58:432.62:050.32:550.36:575:42Waning Gibbous13Wed
14Thu9:013.69:442.32:430.63:560.36:565:43Third Quarter14Thu
15Fri9:483.610:492.13:230.94:590.36:555:44Third Quarter15Fri
16Sat10:383.611:592.04:091.36:030.46:545:45Third Quarter16Sat
17Sun11:323.65:061.57:050.46:535:46Third Quarter17Sun
18Mon1:132.012:293.66:121.78:020.46:515:47Waning Crescent18Mon
19Tue2:252.01:273.67:161.78:540.36:505:48Waning Crescent19Tue
20Wed3:192.12:223.68:141.79:410.36:495:49Waning Crescent20Wed
21Thu3:582.33:123.69:071.510:230.26:485:50Waning Crescent21Thu
22Fri4:332.43:573.69:581.411:020.16:465:51New Moon22Fri
23Sat5:062.54:403.510:461.211:380.16:455:52New Moon23Sat
24Sun5:392.65:213.311:321.06:445:54New Moon24Sun
25Mon6:112.76:023.112:120.112:160.86:425:55New Moon25Mon
26Tue6:422.86:442.912:440.21:000.66:415:56Waxing Crescent26Tue
27Wed7:123.07:292.71:130.41:430.56:395:57Waxing Crescent27Wed
28Thu7:403.18:182.51:370.72:300.56:385:58Waxing Crescent28Thu
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 45% 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 Third Quarter (45% 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