37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

74°
H 81°
L 59°
SW
4mph
Low tide
3:31 pm

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

TIDE TIMES for Thursday, September 3, 2026
The tide is currently falling in Blackslough Landing, San Joaquin River, CA.
Next low tide : in 3h 40m at 3:31 pm (1.7 ft)
Next high tide : 10:51 pm (4.0 ft)
Sunset today : 7:32 pm
Sunrise tomorrow : 6:37 am
Moon phase : Third Quarter (56% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - May 1900

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue6:214.17:492.612:251.31:37-0.45:096:56Waxing Crescent1Tue
2Wed7:083.98:422.51:151.42:26-0.35:086:56Waxing Crescent2Wed
3Thu7:573.69:342.42:081.43:16-0.25:076:57Waxing Crescent3Thu
4Fri8:493.210:252.43:071.44:070.05:056:58First Quarter4Fri
5Sat9:462.911:162.34:111.34:580.15:046:59First Quarter5Sat
6Sun10:462.55:181.25:490.25:037:00First Quarter6Sun
7Mon12:042.411:50 AM2.36:210.96:370.35:027:01First Quarter7Mon
8Tue12:502.512:542.17:190.77:220.45:017:02Waxing Gibbous8Tue
9Wed1:332.61:572.18:120.48:050.65:007:03Waxing Gibbous9Wed
10Thu2:142.92:542.19:000.28:470.74:597:04Waxing Gibbous10Thu
11Fri2:533.13:462.29:460.09:271.04:587:05Waxing Gibbous11Fri
12Sat3:303.44:352.410:31-0.110:071.24:577:06Full Moon12Sat
13Sun4:053.65:212.511:15-0.210:451.34:567:06Full Moon13Sun
14Mon4:403.86:062.511:58-0.211:221.54:557:07Full Moon14Mon
15Tue5:143.96:532.512:41-0.34:557:08Full Moon15Tue
16Wed5:493.97:402.51:24-0.34:547:09Waning Gibbous16Wed
17Thu6:283.88:292.512:371.62:08-0.34:537:10Waning Gibbous17Thu
18Fri7:123.69:182.51:241.62:54-0.34:527:11Waning Gibbous18Fri
19Sat8:043.310:072.52:271.53:42-0.34:517:12Waning Gibbous19Sat
20Sun9:073.010:552.63:441.34:31-0.14:517:12Third Quarter20Sun
21Mon10:202.711:432.85:011.15:210.04:507:13Third Quarter21Mon
22Tue11:372.46:120.86:120.24:497:14Third Quarter22Tue
23Wed12:313.112:542.37:170.47:010.54:497:15Waning Crescent23Wed
24Thu1:193.42:062.38:150.17:500.74:487:16Waning Crescent24Thu
25Fri2:073.83:112.39:11-0.28:391.04:477:16Waning Crescent25Fri
26Sat2:544.14:102.510:03-0.49:291.24:477:17Waning Crescent26Sat
27Sun3:414.35:042.610:54-0.510:201.44:467:18New Moon27Sun
28Mon4:264.45:542.611:42-0.511:111.54:467:19New Moon28Mon
29Tue5:114.36:432.712:30-0.44:457:19New Moon29Tue
30Wed5:564.27:312.712:021.51:16-0.44:457:20Waxing Crescent30Wed
31Thu6:413.98:182.612:541.52:00-0.34:447:21Waxing Crescent31Thu
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 56% 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 (56% 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