37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

80°
H 81°
L 56°
WSW
13mph
Low tide
3:38 pm

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

TIDE TIMES for Wednesday, September 16, 2026
The tide is currently falling in Blackslough Landing, San Joaquin River, CA.
Next low tide : in 1h 00m at 3:38 pm (1.6 ft)
Next high tide : 9:47 pm (3.5 ft)
Sunset today : 7:12 pm
Sunrise tomorrow : 6:48 am
Moon phase : Waxing Crescent (31% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Apr 1866

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun6:013.26:412.812:100.612:450.15:576:35Full Moon1Sun
2Mon6:353.37:262.612:470.81:280.15:566:36Waning Gibbous2Mon
3Tue7:093.28:132.51:231.02:110.15:546:37Waning Gibbous3Tue
4Wed7:443.29:022.41:581.12:570.25:526:38Waning Gibbous4Wed
5Thu8:213.19:542.22:321.23:470.25:516:39Waning Gibbous5Thu
6Fri9:043.010:482.13:101.34:410.25:496:40Third Quarter6Fri
7Sat9:562.911:442.14:131.45:370.25:486:41Third Quarter7Sat
8Sun10:582.85:301.36:320.25:476:42Third Quarter8Sun
9Mon12:392.212:072.86:371.27:230.25:456:42Third Quarter9Mon
10Tue1:312.41:162.87:361.08:110.15:446:43Waning Crescent10Tue
11Wed2:182.62:192.98:310.78:570.25:426:44Waning Crescent11Wed
12Thu3:022.93:183.09:240.49:410.35:416:45Waning Crescent12Thu
13Fri3:443.34:143.010:160.110:250.45:396:46New Moon13Fri
14Sat4:253.65:083.111:07-0.211:090.65:386:47New Moon14Sat
15Sun5:073.86:013.011:58-0.411:530.75:366:48New Moon15Sun
16Mon5:504.06:553.012:50-0.55:356:49New Moon16Mon
17Tue6:354.17:512.812:390.91:42-0.55:346:50Waxing Crescent17Tue
18Wed7:244.08:482.71:281.12:36-0.45:326:51Waxing Crescent18Wed
19Thu8:183.89:462.62:221.23:31-0.35:316:52Waxing Crescent19Thu
20Fri9:163.510:442.53:231.24:29-0.25:296:53First Quarter20Fri
21Sat10:183.211:422.54:321.25:270.05:286:54First Quarter21Sat
22Sun11:222.95:421.16:230.15:276:54First Quarter22Sun
23Mon12:382.512:282.76:470.97:150.25:256:55First Quarter23Mon
24Tue1:302.61:322.57:460.78:040.25:246:56Waxing Gibbous24Tue
25Wed2:162.82:312.58:400.58:490.45:236:57Waxing Gibbous25Wed
26Thu2:582.93:252.59:300.39:320.55:226:58Waxing Gibbous26Thu
27Fri3:373.14:132.510:160.110:140.75:206:59Full Moon27Fri
28Sat4:133.34:592.610:590.010:540.85:197:00Full Moon28Sat
29Sun4:493.45:432.611:42-0.111:331.05:187:01Full Moon29Sun
30Mon5:233.46:272.612:24-0.15:177:02Full Moon30Mon
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 31% 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 Waxing Crescent (31% 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