37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

65°
H 68°
L 51°
NW
1mph
Low tide
1:49 pm

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

TIDE TIMES for Thursday, October 29, 2026
The tide is currently falling in Blackslough Landing, San Joaquin River, CA.
Next low tide : in 45m at 1:49 pm (1.7 ft)
Next high tide : 8:10 pm (4.2 ft)
Sunset today : 6:10 pm
Sunrise tomorrow : 7:28 am
Moon phase : Waning Gibbous (83% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Aug 1794

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri8:492.89:453.03:211.23:300.75:157:21Waxing Crescent1Fri
2Sat9:442.510:273.14:181.14:100.95:167:20First Quarter2Sat
3Sun10:452.311:103.25:191.04:521.15:177:19First Quarter3Sun
4Mon11:512.211:563.46:180.95:391.35:187:18First Quarter4Mon
5Tue12:582.27:130.76:301.55:197:17First Quarter5Tue
6Wed12:443.62:022.38:060.57:221.65:197:16Waxing Gibbous6Wed
7Thu1:343.82:592.58:560.48:141.75:207:15Waxing Gibbous7Thu
8Fri2:254.03:502.79:440.29:071.75:217:14Waxing Gibbous8Fri
9Sat3:144.24:362.910:300.19:591.65:227:12Full Moon9Sat
10Sun4:034.35:203.011:150.010:531.45:237:11Full Moon10Sun
11Mon4:514.36:033.211:59-0.111:481.35:247:10Full Moon11Mon
12Tue5:414.26:473.312:420.05:257:09Full Moon12Tue
13Wed6:334.07:313.412:441.11:250.15:267:08Waning Gibbous13Wed
14Thu7:293.68:173.61:410.92:080.35:267:06Waning Gibbous14Thu
15Fri8:283.29:063.72:420.72:520.55:277:05Waning Gibbous15Fri
16Sat9:322.99:563.73:450.63:390.85:287:04Third Quarter16Sat
17Sun10:382.610:493.84:510.54:321.15:297:03Third Quarter17Sun
18Mon11:462.411:453.95:560.55:311.35:307:01Third Quarter18Mon
19Tue12:562.46:580.46:321.45:317:00Waning Crescent19Tue
20Wed12:423.92:022.47:560.37:311.55:326:59Waning Crescent20Wed
21Thu1:393.92:592.68:480.38:261.55:336:57Waning Crescent21Thu
22Fri2:324.03:472.79:370.39:191.55:336:56Waning Crescent22Fri
23Sat3:224.04:292.810:220.310:091.45:346:54New Moon23Sat
24Sun4:083.95:082.911:040.310:571.35:356:53New Moon24Sun
25Mon4:513.85:453.011:440.311:431.25:366:52New Moon25Mon
26Tue5:333.76:223.012:230.35:376:50New Moon26Tue
27Wed6:153.46:593.112:281.01:000.45:386:49Waxing Crescent27Wed
28Thu6:573.27:353.11:131.01:370.65:396:47Waxing Crescent28Thu
29Fri7:423.08:123.11:590.92:120.75:406:46Waxing Crescent29Fri
30Sat8:302.78:493.12:470.82:451.05:406:44Waxing Crescent30Sat
31Sun9:242.59:283.13:400.83:181.25:416:43First Quarter31Sun
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 spring phase. Tonight's moon is 83% 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 maximum.

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 (83% illuminated). This places Blackslough Landing, San Joaquin River, CA in a spring tide cycle, so tidal ranges are near their weekly maximum 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