37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

55°
H -°
L 53°
WSW
6mph
High tide
2:35 am

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

TIDE TIMES for Tuesday, September 22, 2026
The tide is currently rising in Blackslough Landing, San Joaquin River, CA.
Next low tide : 9:44 am (0.3 ft)
Next high tide : in 0m at 2:35 am (3.2 ft)
Sunset today : 7:02 pm
Sunrise tomorrow : 6:53 am
Moon phase : Waxing Gibbous (84% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Jun 1859

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed4:334.56:302.612:11-0.54:517:28New Moon1Wed
2Thu5:184.57:212.612:59-0.64:517:29New Moon2Thu
3Fri6:074.48:122.612:001.81:48-0.64:507:30Waxing Crescent3Fri
4Sat7:004.19:022.61:041.72:37-0.54:507:30Waxing Crescent4Sat
5Sun7:593.79:522.72:151.63:26-0.44:507:31Waxing Crescent5Sun
6Mon9:043.210:402.83:311.44:14-0.24:497:32First Quarter6Mon
7Tue10:132.711:273.04:471.15:020.04:497:32First Quarter7Tue
8Wed11:262.35:590.75:500.34:497:33First Quarter8Wed
9Thu12:143.212:402.07:050.46:370.64:497:33Waxing Gibbous9Thu
10Fri1:003.51:542.08:030.17:230.94:497:34Waxing Gibbous10Fri
11Sat1:453.73:022.08:57-0.18:091.24:497:34Waxing Gibbous11Sat
12Sun2:293.94:002.29:46-0.18:561.54:497:35Waxing Gibbous12Sun
13Mon3:124.14:502.310:33-0.19:431.74:497:35Full Moon13Mon
14Tue3:544.25:352.511:18-0.110:301.84:497:36Full Moon14Tue
15Wed4:344.26:182.512:01-0.14:497:36Full Moon15Wed
16Thu5:144.27:002.512:43-0.14:497:36Full Moon16Thu
17Fri5:524.07:432.512:031.91:25-0.14:497:37Waning Gibbous17Fri
18Sat6:313.78:262.512:501.82:05-0.14:497:37Waning Gibbous18Sat
19Sun7:103.49:072.51:391.72:440.04:497:37Waning Gibbous19Sun
20Mon7:543.09:482.52:351.63:220.04:497:38Waning Gibbous20Mon
21Tue8:432.610:262.63:371.43:590.24:497:38Third Quarter21Tue
22Wed9:432.311:042.84:431.24:350.44:507:38Third Quarter22Wed
23Thu10:542.111:413.05:460.95:080.74:507:38Third Quarter23Thu
24Fri12:102.06:450.75:411.04:507:38Third Quarter24Fri
25Sat12:203.31:252.07:400.46:151.34:507:39Waning Crescent25Sat
26Sun1:023.72:352.18:330.26:581.64:517:39Waning Crescent26Sun
27Mon1:484.13:362.39:240.07:501.84:517:39Waning Crescent27Mon
28Tue2:364.44:312.510:14-0.28:481.94:517:39Waning Crescent28Tue
29Wed3:264.75:212.611:04-0.39:511.94:527:39New Moon29Wed
30Thu4:164.86:092.711:53-0.410:561.84:527:39New Moon30Thu
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 84% 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 Waxing Gibbous (84% 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