37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

55°
H 92°
L 56°
WNW
2mph
Low tide
10:25 am

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

TIDE TIMES for Wednesday, September 23, 2026
The tide is currently falling in Blackslough Landing, San Joaquin River, CA.
Next low tide : in 5h 19m at 10:25 am (0.2 ft)
Next high tide : 4:31 pm (2.6 ft)
Sunset today : 7:01 pm
Sunrise tomorrow : 6:54 am
Moon phase : Waxing Gibbous (91% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Feb 1857

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun10:283.711:342.03:470.95:480.37:175:36First Quarter1Sun
2Mon11:203.94:291.36:540.27:165:37First Quarter2Mon
3Tue12:522.012:184.05:341.67:560.17:155:38Waxing Gibbous3Tue
4Wed2:112.11:184.26:501.78:530.07:145:39Waxing Gibbous4Wed
5Thu3:182.22:184.27:591.89:460.07:135:40Waxing Gibbous5Thu
6Fri4:092.43:144.29:011.710:34-0.17:125:41Waxing Gibbous6Fri
7Sat4:512.54:044.29:591.611:18-0.17:115:43Full Moon7Sat
8Sun5:302.64:514.010:541.411:59-0.17:105:44Full Moon8Sun
9Mon6:062.75:363.711:451.27:095:45Full Moon9Mon
10Tue6:432.86:203.412:37-0.112:351.07:085:46Full Moon10Tue
11Wed7:182.87:053.01:130.01:230.97:075:47Waning Gibbous11Wed
12Thu7:532.97:522.71:470.22:110.77:055:48Waning Gibbous12Thu
13Fri8:282.98:422.42:190.53:020.77:045:49Waning Gibbous13Fri
14Sat9:033.09:372.22:490.83:560.67:035:50Waning Gibbous14Sat
15Sun9:403.110:382.03:141.14:550.67:025:51Third Quarter15Sun
16Mon10:203.211:451.93:161.35:560.67:015:52Third Quarter16Mon
17Tue11:083.33:171.56:560.56:595:53Third Quarter17Tue
18Wed12:561.912:033.53:521.77:530.46:585:55Third Quarter18Wed
19Thu2:042.01:023.66:351.88:450.36:575:56Waning Crescent19Thu
20Fri3:012.12:003.87:471.89:330.16:565:57Waning Crescent20Fri
21Sat3:482.32:543.98:471.610:17-0.16:545:58Waning Crescent21Sat
22Sun4:272.43:453.99:421.410:58-0.26:535:59New Moon22Sun
23Mon5:052.64:343.810:371.111:38-0.26:526:00New Moon23Mon
24Tue5:412.85:243.711:300.86:506:01New Moon24Tue
25Wed6:173.06:153.412:15-0.112:240.56:496:02New Moon25Wed
26Thu6:533.37:103.112:510.11:180.36:486:03Waxing Crescent26Thu
27Fri7:323.58:082.81:260.42:150.16:466:04Waxing Crescent27Fri
28Sat8:133.79:112.52:000.73:140.16:456:05Waxing Crescent28Sat
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 91% 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 (91% 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