37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

70°
H -°
L 67°
WNW
5mph
High tide
4:21 am

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

TIDE TIMES for Wednesday, September 9, 2026
The tide is currently rising in Blackslough Landing, San Joaquin River, CA.
Next low tide : 11:14 am (0.1 ft)
Next high tide : in 39m at 4:21 am (3.8 ft)
Sunset today : 7:23 pm
Sunrise tomorrow : 6:42 am
Moon phase : New Moon (2% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Feb 1880

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun8:583.49:272.42:320.63:510.67:175:35Waning Gibbous1Sun
2Mon9:423.610:382.22:580.94:580.57:165:36Third Quarter2Mon
3Tue10:323.811:532.13:251.26:050.37:155:37Third Quarter3Tue
4Wed11:293.94:111.47:090.27:145:39Third Quarter4Wed
5Thu1:082.112:324.15:511.68:090.17:135:40Waning Crescent5Thu
6Fri2:182.21:364.27:151.69:04-0.17:125:41Waning Crescent6Fri
7Sat3:172.42:374.28:241.59:54-0.17:115:42Waning Crescent7Sat
8Sun4:062.63:344.29:271.410:42-0.27:105:43New Moon8Sun
9Mon4:502.84:264.110:261.211:25-0.27:095:44New Moon9Mon
10Tue5:313.05:163.811:211.07:085:45New Moon10Tue
11Wed6:113.16:043.512:07-0.112:150.87:075:46New Moon11Wed
12Thu6:513.26:523.212:460.01:060.67:065:47Waxing Crescent12Thu
13Fri7:303.37:412.91:240.21:560.57:055:48Waxing Crescent13Fri
14Sat8:093.38:322.62:010.52:470.57:045:50Waxing Crescent14Sat
15Sun8:493.39:262.32:370.83:410.57:035:51Waxing Crescent15Sun
16Mon9:313.310:232.13:141.04:390.67:015:52First Quarter16Mon
17Tue10:173.311:252.03:521.35:390.67:005:53First Quarter17Tue
18Wed11:073.34:421.56:380.66:595:54First Quarter18Wed
19Thu12:301.912:023.45:471.67:340.56:585:55First Quarter19Thu
20Fri1:352.012:593.46:511.68:260.46:565:56Waxing Gibbous20Fri
21Sat2:322.11:543.57:501.59:120.26:555:57Waxing Gibbous21Sat
22Sun3:202.22:463.58:441.49:550.16:545:58Waxing Gibbous22Sun
23Mon4:012.43:343.59:351.210:360.06:525:59Waxing Gibbous23Mon
24Tue4:382.64:193.510:251.011:140.06:516:00Full Moon24Tue
25Wed5:142.85:053.411:130.811:500.16:506:01Full Moon25Wed
26Thu5:483.05:503.312:010.66:486:02Full Moon26Thu
27Fri6:223.26:393.112:240.312:490.46:476:03Waning Gibbous27Fri
28Sat6:573.47:302.912:570.51:390.36:466:04Waning Gibbous28Sat
29Sun7:353.68:272.61:280.72:320.26:446:05Waning Gibbous29Sun
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 2% 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 New Moon (2% 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