37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

68°
H -°
L 55°
W
9mph
High tide
9:57 pm

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

TIDE TIMES for Wednesday, September 2, 2026
The tide is currently rising in Blackslough Landing, San Joaquin River, CA.
Next low tide (tomorrow) : 5:36 am (0.4 ft)
Next high tide : in 1h 40m at 9:57 pm (3.9 ft)
Sunset today : 7:33 pm
Sunrise tomorrow : 6:36 am
Moon phase : Third Quarter (67% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Mar 1904

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue4:563.24:544.010:560.711:38-0.16:375:58Full Moon1Tue
2Wed5:403.45:463.811:510.56:365:59Full Moon2Wed
3Thu6:243.56:393.512:230.012:450.36:346:00Waning Gibbous3Thu
4Fri7:083.67:333.21:060.21:400.26:336:01Waning Gibbous4Fri
5Sat7:543.68:292.91:500.42:350.26:316:02Waning Gibbous5Sat
6Sun8:423.69:272.62:350.73:320.26:306:03Waning Gibbous6Sun
7Mon9:313.510:262.43:230.94:310.36:286:04Third Quarter7Mon
8Tue10:243.411:282.24:171.15:320.36:276:05Third Quarter8Tue
9Wed11:193.35:171.26:320.46:256:06Third Quarter9Wed
10Thu12:312.212:173.26:181.37:270.36:246:07Third Quarter10Thu
11Fri1:322.21:153.27:171.38:180.36:226:08Waning Crescent11Fri
12Sat2:262.32:103.28:121.29:050.36:216:09Waning Crescent12Sat
13Sun3:122.43:003.29:031.09:490.26:196:10Waning Crescent13Sun
14Mon3:532.63:473.29:510.910:300.26:186:11Waning Crescent14Mon
15Tue4:302.74:313.210:370.711:090.36:166:12New Moon15Tue
16Wed5:062.95:133.111:210.611:470.36:156:13New Moon16Wed
17Thu5:413.05:553.012:040.56:136:14New Moon17Thu
18Fri6:153.16:372.912:230.412:470.46:126:15New Moon18Fri
19Sat6:483.17:222.812:570.61:290.36:106:16Waxing Crescent19Sat
20Sun7:203.28:092.61:280.82:140.36:096:17Waxing Crescent20Sun
21Mon7:543.29:012.41:551.03:020.36:076:18Waxing Crescent21Mon
22Tue8:333.39:592.32:181.13:570.36:066:19Waxing Crescent22Tue
23Wed9:203.311:002.22:451.34:580.26:046:20First Quarter23Wed
24Thu10:193.33:451.45:590.26:036:21First Quarter24Thu
25Fri12:042.211:27 AM3.35:331.46:580.16:016:21First Quarter25Fri
26Sat1:052.312:393.36:501.37:540.05:596:22Waxing Gibbous26Sat
27Sun2:022.51:483.47:551.08:450.05:586:23Waxing Gibbous27Sun
28Mon2:522.82:523.48:550.79:340.05:566:24Waxing Gibbous28Mon
29Tue3:393.13:503.49:520.410:210.15:556:25Waxing Gibbous29Tue
30Wed4:233.44:453.410:460.211:060.25:536:26Full Moon30Wed
31Thu5:063.65:383.311:39-0.111:510.45:526:27Full Moon31Thu
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 67% 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 Third Quarter (67% 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