37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

60°
H -°
L 53°
W
8mph
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 3h 56m at 2:35 am (3.2 ft)
Sunset today : 7:04 pm
Sunrise tomorrow : 6:52 am
Moon phase : Waxing Gibbous (76% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

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

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue10:492.29:442.94:260.14:141.66:385:14First Quarter1Tue
2Wed11:402.110:492.65:190.15:261.46:395:13First Quarter2Wed
3Thu12:272.26:090.26:321.16:405:12First Quarter3Thu
4Fri1:102.36:550.27:290.86:415:11Waxing Gibbous4Fri
5Sat1:012.21:492.67:370.38:210.56:425:10Waxing Gibbous5Sat
6Sun2:042.12:262.88:160.59:080.26:435:09Waxing Gibbous6Sun
7Mon3:012.23:003.28:540.79:540.06:445:08Waxing Gibbous7Mon
8Tue3:542.33:333.59:290.910:38-0.26:455:07Full Moon8Tue
9Wed4:432.44:063.810:031.211:22-0.36:475:06Full Moon9Wed
10Thu5:322.54:394.010:351.46:485:05Full Moon10Thu
11Fri6:202.55:154.112:07-0.411:06 AM1.66:495:04Full Moon11Fri
12Sat7:102.55:544.212:53-0.411:37 AM1.76:505:03Waning Gibbous12Sat
13Sun8:032.46:384.01:40-0.412:161.86:515:03Waning Gibbous13Sun
14Mon8:572.47:303.82:30-0.41:121.76:525:02Waning Gibbous14Mon
15Tue9:512.38:313.43:22-0.32:391.66:535:01Waning Gibbous15Tue
16Wed10:432.49:433.04:16-0.34:151.46:545:00Third Quarter16Wed
17Thu11:332.511:012.65:09-0.25:371.16:555:00Third Quarter17Thu
18Fri12:212.76:000.06:480.76:564:59Third Quarter18Fri
19Sat12:192.31:073.06:480.27:510.26:574:58Waning Crescent19Sat
20Sun1:352.21:523.47:340.58:47-0.16:584:58Waning Crescent20Sun
21Mon2:442.12:353.78:190.79:39-0.36:594:57Waning Crescent21Mon
22Tue3:462.23:174.09:041.010:28-0.57:004:57New Moon22Tue
23Wed4:402.33:584.29:481.311:15-0.57:024:56New Moon23Wed
24Thu5:302.44:394.210:341.57:034:56New Moon24Thu
25Fri6:172.55:194.212:01-0.411:19 AM1.77:044:55New Moon25Fri
26Sat7:042.55:594.112:46-0.312:051.77:054:55Waxing Crescent26Sat
27Sun7:512.56:393.81:31-0.312:521.87:064:54Waxing Crescent27Sun
28Mon8:382.47:223.52:15-0.21:431.77:074:54Waxing Crescent28Mon
29Tue9:252.38:083.13:00-0.12:401.67:084:54Waxing Crescent29Tue
30Wed10:112.39:012.73:45-0.13:471.57:094:54First Quarter30Wed
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 76% 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 Gibbous (76% 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