37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

75°
H 80°
L 53°
W
6mph
Low tide
4:16 pm

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

TIDE TIMES for Friday, September 4, 2026
The tide is currently falling in Blackslough Landing, San Joaquin River, CA.
Next low tide : in 3h 14m at 4:16 pm (1.8 ft)
Next high tide : 11:56 pm (4.0 ft)
Sunset today : 7:30 pm
Sunrise tomorrow : 6:38 am
Moon phase : Third Quarter (45% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Feb 1893

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed6:062.75:284.111:331.47:095:29Full Moon1Wed
2Thu6:472.86:163.812:37-0.212:271.27:085:30Full Moon2Thu
3Fri7:262.97:033.31:17-0.11:191.07:075:31Waning Gibbous3Fri
4Sat8:052.97:522.91:540.02:120.97:065:32Waning Gibbous4Sat
5Sun8:442.98:442.52:310.23:060.87:055:34Waning Gibbous5Sun
6Mon9:223.09:402.23:060.54:030.77:045:35Third Quarter6Mon
7Tue10:013.110:412.03:410.85:030.67:035:36Third Quarter7Tue
8Wed10:433.211:481.94:181.16:030.67:025:37Third Quarter8Wed
9Thu11:293.35:001.47:020.57:015:38Third Quarter9Thu
10Fri12:581.912:203.45:571.67:570.47:005:39Third Quarter10Fri
11Sat2:072.01:143.66:591.88:490.36:595:40Waning Crescent11Sat
12Sun3:052.12:083.77:561.89:370.26:585:41Waning Crescent12Sun
13Mon3:532.32:573.98:501.710:220.16:575:42Waning Crescent13Mon
14Tue4:342.43:443.99:411.611:03-0.16:565:43Waning Crescent14Tue
15Wed5:122.54:283.910:311.411:42-0.26:545:45New Moon15Wed
16Thu5:482.65:133.811:211.26:535:46New Moon16Thu
17Fri6:232.85:583.512:19-0.212:111.06:525:47New Moon17Fri
18Sat6:582.96:473.212:55-0.11:020.76:515:48Waxing Crescent18Sat
19Sun7:343.17:412.91:280.11:560.56:505:49Waxing Crescent19Sun
20Mon8:113.38:412.62:000.42:530.46:485:50Waxing Crescent20Mon
21Tue8:523.59:472.32:290.73:560.36:475:51Waxing Crescent21Tue
22Wed9:383.710:582.12:581.15:030.26:465:52First Quarter22Wed
23Thu10:313.83:281.46:110.26:445:53First Quarter23Thu
24Fri12:142.011:32 AM3.94:311.67:160.16:435:54First Quarter24Fri
25Sat1:302.112:394.06:161.88:160.16:425:55Waxing Gibbous25Sat
26Sun2:392.21:454.07:331.79:110.06:405:56Waxing Gibbous26Sun
27Mon3:322.42:464.08:381.610:000.06:395:57Waxing Gibbous27Mon
28Tue4:152.53:413.99:381.410:45-0.16:375:58Full Moon28Tue
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 neap phase. Tonight's moon is 45% 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 minimum.

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 Third Quarter (45% illuminated). This places Blackslough Landing, San Joaquin River, CA in a neap tide cycle, so tidal ranges are near their weekly minimum 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