37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

59°
H 87°
L 54°
WNW
5mph
High tide
12:22 pm

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

TIDE TIMES for Friday, September 18, 2026
The tide is currently rising in Blackslough Landing, San Joaquin River, CA.
Next low tide : 5:26 pm (1.8 ft)
Next high tide : in 3h 39m at 12:22 pm (2.2 ft)
Sunset today : 7:09 pm
Sunrise tomorrow : 6:50 am
Moon phase : First Quarter (49% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Nov 1864

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue6:522.66:003.712:45-0.212:111.46:395:13Waxing Crescent1Tue
2Wed7:402.56:363.71:28-0.212:441.56:405:12Waxing Crescent2Wed
3Thu8:312.57:193.52:14-0.21:221.56:415:11Waxing Crescent3Thu
4Fri9:232.48:113.33:02-0.22:211.56:425:10Waxing Crescent4Fri
5Sat10:162.49:153.03:53-0.13:461.46:435:09First Quarter5Sat
6Sun11:082.510:302.84:47-0.15:081.26:445:08First Quarter6Sun
7Mon12:002.75:420.06:200.96:455:07First Quarter7Mon
8Tue12:492.96:340.27:240.56:465:06Waxing Gibbous8Tue
9Wed1:032.51:383.37:240.38:220.26:475:05Waxing Gibbous9Wed
10Thu2:122.52:253.68:130.59:16-0.26:485:04Waxing Gibbous10Thu
11Fri3:152.53:103.99:000.710:08-0.46:505:04Waxing Gibbous11Fri
12Sat4:122.63:554.19:470.910:59-0.56:515:03Full Moon12Sat
13Sun5:052.74:384.310:351.111:47-0.56:525:02Full Moon13Sun
14Mon5:562.75:224.211:231.36:535:01Full Moon14Mon
15Tue6:452.76:054.112:35-0.512:121.46:545:00Waning Gibbous15Tue
16Wed7:352.76:503.81:22-0.41:031.46:555:00Waning Gibbous16Wed
17Thu8:252.67:363.52:08-0.31:561.46:564:59Waning Gibbous17Thu
18Fri9:152.58:263.12:55-0.22:531.46:574:58Waning Gibbous18Fri
19Sat10:042.59:212.73:43-0.13:561.36:584:58Third Quarter19Sat
20Sun10:522.410:222.44:320.15:011.26:594:57Third Quarter20Sun
21Mon11:392.511:262.25:210.26:040.97:004:57Third Quarter21Mon
22Tue12:242.66:080.37:020.77:014:56Third Quarter22Tue
23Wed12:312.01:082.86:540.57:550.47:024:56Waning Crescent23Wed
24Thu1:352.01:503.07:380.78:440.27:034:55Waning Crescent24Thu
25Fri2:342.12:303.38:210.89:300.17:044:55Waning Crescent25Fri
26Sat3:282.23:093.69:021.010:15-0.17:054:55Waning Crescent26Sat
27Sun4:182.33:463.89:421.210:59-0.27:064:54New Moon27Sun
28Mon5:042.54:233.910:221.411:42-0.37:074:54New Moon28Mon
29Tue5:502.64:594.011:031.57:084:54New Moon29Tue
30Wed6:362.65:384.012:25-0.411:45 AM1.57:094:53New Moon30Wed
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 49% 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 First Quarter (49% 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