37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

64°
H -°
L 54°
WSW
7mph
Low tide
7:15 am

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

TIDE TIMES for Saturday, September 19, 2026
The tide is currently falling in Blackslough Landing, San Joaquin River, CA.
Next low tide : in 6h 31m at 7:15 am (0.6 ft)
Next high tide : 1:25 pm (2.1 ft)
Sunset today : 7:07 pm
Sunrise tomorrow : 6:51 am
Moon phase : First Quarter (59% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Aug 1863

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat6:164.07:123.512:251.01:050.05:157:22Waning Gibbous1Sat
2Sun7:113.67:573.61:230.81:470.35:167:21Waning Gibbous2Sun
3Mon8:073.28:443.72:210.72:300.55:167:20Waning Gibbous3Mon
4Tue9:052.89:313.73:210.73:130.85:177:19Third Quarter4Tue
5Wed10:062.510:203.74:220.74:001.15:187:18Third Quarter5Wed
6Thu11:092.311:113.75:250.64:531.35:197:17Third Quarter6Thu
7Fri12:142.26:260.65:491.55:207:16Third Quarter7Fri
8Sat12:043.71:202.27:230.66:461.65:217:14Waning Crescent8Sat
9Sun12:573.72:202.38:150.57:411.65:227:13Waning Crescent9Sun
10Mon1:503.83:112.49:030.48:331.65:237:12Waning Crescent10Mon
11Tue2:393.83:542.59:470.49:231.55:237:11Waning Crescent11Tue
12Wed3:253.84:332.710:290.310:111.45:247:10New Moon12Wed
13Thu4:083.85:102.811:090.310:581.35:257:09New Moon13Thu
14Fri4:503.75:462.911:460.311:441.25:267:07New Moon14Fri
15Sat5:303.66:223.012:220.35:277:06New Moon15Sat
16Sun6:113.46:563.112:291.112:560.55:287:05Waxing Crescent16Sun
17Mon6:533.27:303.21:131.01:270.65:297:04Waxing Crescent17Mon
18Tue7:392.98:043.42:000.91:550.95:307:02Waxing Crescent18Tue
19Wed8:302.78:413.52:500.82:161.15:307:01Waxing Crescent19Wed
20Thu9:292.59:243.63:470.82:331.35:317:00First Quarter20Thu
21Fri10:352.410:153.74:500.73:011.55:326:58First Quarter21Fri
22Sat11:452.311:143.95:540.63:551.65:336:57First Quarter22Sat
23Sun12:532.36:560.45:531.75:346:55First Quarter23Sun
24Mon12:204.01:572.57:520.37:151.65:356:54Waxing Gibbous24Mon
25Tue1:264.12:522.78:450.18:221.45:366:53Waxing Gibbous25Tue
26Wed2:284.13:412.99:350.19:231.25:366:51Waxing Gibbous26Wed
27Thu3:274.14:253.210:220.010:220.95:376:50Full Moon27Thu
28Fri4:224.05:083.411:070.111:180.75:386:48Full Moon28Fri
29Sat5:153.95:513.611:500.25:396:47Full Moon29Sat
30Sun6:073.66:333.812:130.512:320.45:406:45Waning Gibbous30Sun
31Mon7:003.37:163.81:060.41:140.75:416:44Waning Gibbous31Mon
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 59% 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 (59% 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