37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

62°
H 80°
L 52°
WSW
5mph
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 5h 33m 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 - May 1895

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed9:433.311:562.33:531.65:32-0.25:096:56First Quarter1Wed
2Thu11:012.95:331.46:25-0.25:076:57First Quarter2Thu
3Fri12:462.412:212.76:491.07:150.05:066:58First Quarter3Fri
4Sat1:322.71:362.57:540.58:010.25:056:58Waxing Gibbous4Sat
5Sun2:163.12:452.48:530.18:450.45:046:59Waxing Gibbous5Sun
6Mon2:573.43:482.49:47-0.29:280.75:037:00Waxing Gibbous6Mon
7Tue3:383.74:452.410:38-0.410:111.05:027:01Full Moon7Tue
8Wed4:184.05:372.511:27-0.510:541.25:017:02Full Moon8Wed
9Thu4:584.16:282.512:14-0.55:007:03Full Moon9Thu
10Fri5:374.17:182.51:01-0.44:597:04Waning Gibbous10Fri
11Sat6:184.08:082.412:221.61:47-0.34:587:05Waning Gibbous11Sat
12Sun7:003.88:582.41:071.72:35-0.24:577:06Waning Gibbous12Sun
13Mon7:453.69:492.31:571.73:24-0.14:567:07Waning Gibbous13Mon
14Tue8:343.210:392.22:551.74:140.04:557:07Third Quarter14Tue
15Wed9:302.811:262.24:041.65:040.14:547:08Third Quarter15Wed
16Thu10:322.55:161.45:520.14:547:09Third Quarter16Thu
17Fri12:112.211:39 AM2.26:221.16:360.24:537:10Third Quarter17Fri
18Sat12:532.412:482.07:200.87:180.44:527:11Waning Crescent18Sat
19Sun1:322.61:542.08:130.57:580.64:517:12Waning Crescent19Sun
20Mon2:092.92:552.19:020.28:350.94:507:13Waning Crescent20Mon
21Tue2:453.23:512.29:480.09:111.24:507:13Waning Crescent21Tue
22Wed3:193.64:432.310:33-0.29:461.44:497:14New Moon22Wed
23Thu3:543.95:332.511:18-0.310:201.64:487:15New Moon23Thu
24Fri4:304.16:222.512:04-0.44:487:16New Moon24Fri
25Sat5:084.37:122.512:50-0.44:477:17New Moon25Sat
26Sun5:494.38:032.51:38-0.54:477:17Waxing Crescent26Sun
27Mon6:364.18:552.512:231.92:26-0.54:467:18Waxing Crescent27Mon
28Tue7:283.89:462.51:281.83:16-0.44:467:19Waxing Crescent28Tue
29Wed8:293.410:352.52:491.64:06-0.34:457:20First Quarter29Wed
30Thu9:393.011:222.74:141.44:56-0.24:457:20First Quarter30Thu
31Fri10:542.65:321.05:440.04:447:21First Quarter31Fri
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