37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

70°
H 86°
L 53°
WSW
10mph
Low tide
11:38 am

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

TIDE TIMES for Friday, September 25, 2026
The tide is currently falling in Blackslough Landing, San Joaquin River, CA.
Next low tide : in 1h 58m at 11:38 am (0.3 ft)
Next high tide : 5:37 pm (3.1 ft)
Sunset today : 6:58 pm
Sunrise tomorrow : 6:56 am
Moon phase : Full Moon (99% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Nov 1852

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon8:572.37:293.32:360.01:171.76:395:13Waning Gibbous1Mon
2Tue9:512.38:133.23:250.01:401.76:405:12Waning Gibbous2Tue
3Wed10:462.29:093.04:190.02:371.76:415:11Third Quarter3Wed
4Thu11:402.210:182.95:140.05:111.66:425:10Third Quarter4Thu
5Fri12:312.46:090.06:261.36:435:09Third Quarter5Fri
6Sat1:182.66:590.07:281.06:445:08Waning Crescent6Sat
7Sun12:572.72:012.97:460.18:240.66:455:07Waning Crescent7Sun
8Mon2:072.72:433.28:310.29:180.16:465:06Waning Crescent8Mon
9Tue3:112.73:243.69:150.410:11-0.26:475:05Waning Crescent9Tue
10Wed4:112.84:044.09:590.611:02-0.56:485:04New Moon10Wed
11Thu5:072.84:464.210:430.911:54-0.76:495:04New Moon11Thu
12Fri6:022.85:294.411:281.16:515:03New Moon12Fri
13Sat6:572.76:144.312:45-0.712:151.36:525:02Waxing Crescent13Sat
14Sun7:532.77:024.21:36-0.61:061.56:535:01Waxing Crescent14Sun
15Mon8:502.67:553.92:29-0.52:031.66:545:01Waxing Crescent15Mon
16Tue9:482.58:523.53:22-0.33:081.66:555:00First Quarter16Tue
17Wed10:442.59:543.14:17-0.24:201.56:564:59First Quarter17Wed
18Thu11:382.510:592.75:12-0.15:311.36:574:59First Quarter18Thu
19Fri12:292.56:050.16:371.16:584:58First Quarter19Fri
20Sat12:052.41:152.66:540.27:360.86:594:57Waxing Gibbous20Sat
21Sun1:102.21:562.87:390.38:280.57:004:57Waxing Gibbous21Sun
22Mon2:122.22:343.08:220.59:160.27:014:56Waxing Gibbous22Mon
23Tue3:082.23:113.29:020.710:000.07:024:56Waxing Gibbous23Tue
24Wed3:592.33:453.49:420.910:44-0.17:034:55Full Moon24Wed
25Thu4:462.44:193.610:201.111:26-0.27:044:55Full Moon25Thu
26Fri5:312.44:513.710:581.37:054:55Full Moon26Fri
27Sat6:162.55:223.812:07-0.211:34 AM1.57:064:54Full Moon27Sat
28Sun7:022.55:533.712:49-0.212:071.67:074:54Waning Gibbous28Sun
29Mon7:502.56:253.71:31-0.212:361.77:084:54Waning Gibbous29Mon
30Tue8:392.47:033.52:14-0.21:051.77:094:53Waning Gibbous30Tue
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 99% 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 Full Moon (99% 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