37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

68°
H -°
L 56°
W
18mph
High tide
9:47 pm

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

TIDE TIMES for Wednesday, September 16, 2026
The tide is currently rising in Blackslough Landing, San Joaquin River, CA.
Next low tide (tomorrow) : 5:15 am (0.5 ft)
Next high tide : in 2h 58m at 9:47 pm (3.5 ft)
Sunset today : 7:12 pm
Sunrise tomorrow : 6:48 am
Moon phase : Waxing Crescent (31% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Nov 1865

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed3:292.83:313.89:240.610:23-0.36:395:13Full Moon1Wed
2Thu4:262.94:154.110:100.811:15-0.56:405:12Full Moon2Thu
3Fri5:202.94:594.310:581.06:415:11Full Moon3Fri
4Sat6:132.95:454.312:06-0.611:46 AM1.16:425:10Full Moon4Sat
5Sun7:072.86:334.212:57-0.612:371.26:435:09Waning Gibbous5Sun
6Mon8:012.87:233.91:47-0.51:311.36:445:08Waning Gibbous6Mon
7Tue8:562.78:173.62:39-0.42:301.46:455:07Waning Gibbous7Tue
8Wed9:512.69:153.23:31-0.23:351.36:465:06Third Quarter8Wed
9Thu10:452.610:172.84:25-0.14:431.26:475:05Third Quarter9Thu
10Fri11:382.611:212.55:180.15:501.06:485:05Third Quarter10Fri
11Sat12:272.66:100.26:520.86:495:04Third Quarter11Sat
12Sun12:252.31:142.86:590.37:470.66:505:03Waning Crescent12Sun
13Mon1:292.21:572.97:450.58:370.36:515:02Waning Crescent13Mon
14Tue2:272.22:373.18:280.69:240.16:525:01Waning Crescent14Tue
15Wed3:202.23:153.39:100.810:080.06:545:01Waning Crescent15Wed
16Thu4:092.33:523.59:511.010:51-0.16:555:00New Moon16Thu
17Fri4:542.44:273.610:311.111:34-0.26:564:59New Moon17Fri
18Sat5:382.55:013.711:101.36:574:59New Moon18Sat
19Sun6:222.55:343.712:15-0.211:49 AM1.46:584:58New Moon19Sun
20Mon7:072.56:063.612:57-0.212:261.56:594:57Waxing Crescent20Mon
21Tue7:532.56:413.51:38-0.21:041.57:004:57Waxing Crescent21Tue
22Wed8:402.57:213.32:20-0.21:481.57:014:56Waxing Crescent22Wed
23Thu9:282.48:113.03:04-0.22:501.57:024:56Waxing Crescent23Thu
24Fri10:162.59:132.83:50-0.14:061.37:034:55First Quarter24Fri
25Sat11:042.610:282.54:380.05:201.17:044:55First Quarter25Sat
26Sun11:512.811:482.35:290.26:270.87:054:55First Quarter26Sun
27Mon12:393.16:200.37:280.47:064:54First Quarter27Mon
28Tue1:042.31:273.57:100.58:240.17:074:54Waxing Gibbous28Tue
29Wed2:142.32:153.87:590.79:18-0.27:084:54Waxing Gibbous29Wed
30Thu3:182.53:034.28:490.910:10-0.47:094:53Waxing Gibbous30Thu
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 transitional phase. Tonight's moon is 31% 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 shifting between spring and neap.

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 Crescent (31% illuminated). This places Blackslough Landing, San Joaquin River, CA in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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