37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

68°
H -°
L 44°
WNW
8mph
Low tide
4:49 pm

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

TIDE TIMES for Sunday, November 1, 2026
The tide is currently falling in Blackslough Landing, San Joaquin River, CA.
Next low tide : in 44m at 4:49 pm (1.5 ft)
Next high tide : 10:27 pm (3.1 ft)
Sunset today : 5:06 pm
Sunrise tomorrow : 6:31 am
Moon phase : Third Quarter (50% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Sep 1790

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed11:152.210:523.35:260.74:391.65:426:41Third Quarter1Wed
2Thu12:172.26:240.65:501.65:436:40Third Quarter2Thu
3Fri1:172.37:190.56:531.65:446:38Waning Crescent3Fri
4Sat12:493.42:122.48:090.47:511.45:456:37Waning Crescent4Sat
5Sun1:473.52:592.68:550.38:451.25:466:35Waning Crescent5Sun
6Mon2:423.63:422.99:400.29:371.05:466:34Waning Crescent6Mon
7Tue3:353.74:233.210:230.210:300.75:476:32New Moon7Tue
8Wed4:273.75:033.411:040.311:220.55:486:31New Moon8Wed
9Thu5:183.65:433.711:450.45:496:29New Moon9Thu
10Fri6:103.56:253.912:140.312:260.65:506:28Waxing Crescent10Fri
11Sat7:043.37:104.01:080.21:080.85:516:26Waxing Crescent11Sat
12Sun8:013.07:584.02:030.11:521.05:526:25Waxing Crescent12Sun
13Mon9:012.88:514.03:000.12:411.25:526:23Waxing Crescent13Mon
14Tue10:042.69:483.84:020.23:381.45:536:22First Quarter14Tue
15Wed11:072.510:503.75:050.24:461.45:546:20First Quarter15Wed
16Thu12:122.46:070.35:561.45:556:18First Quarter16Thu
17Fri1:132.57:050.37:011.35:566:17Waxing Gibbous17Fri
18Sat12:573.42:082.67:580.38:001.15:576:15Waxing Gibbous18Sat
19Sun1:573.32:552.78:460.38:540.95:586:14Waxing Gibbous19Sun
20Mon2:523.33:362.99:300.39:440.85:596:12Waxing Gibbous20Mon
21Tue3:423.24:143.110:120.410:310.65:596:11Full Moon21Tue
22Wed4:273.14:503.210:520.511:160.56:006:09Full Moon22Wed
23Thu5:113.15:243.311:300.66:016:07Full Moon23Thu
24Fri5:543.05:583.412:000.412:070.86:026:06Full Moon24Fri
25Sat6:382.96:323.412:430.312:431.06:036:04Waning Gibbous25Sat
26Sun7:232.77:053.41:260.31:181.16:046:03Waning Gibbous26Sun
27Mon8:102.67:403.32:100.41:511.36:056:01Waning Gibbous27Mon
28Tue9:002.48:183.22:570.42:201.46:066:00Waning Gibbous28Tue
29Wed9:542.39:033.13:490.42:481.56:065:58Third Quarter29Wed
30Thu10:512.29:583.14:450.44:031.66:075:57Third Quarter30Thu
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 50% 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 (50% 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