37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

67°
H 95°
L 60°
NW
6mph
Low tide
10:25 am

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

TIDE TIMES for Monday, August 24, 2026
The tide is currently falling in Blackslough Landing, San Joaquin River, CA.
Next low tide : in 2h 39m at 10:25 am (0.4 ft)
Next high tide : 4:38 pm (2.4 ft)
Sunset today : 7:46 pm
Sunrise tomorrow : 6:28 am
Moon phase : Waxing Gibbous (89% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - May 1920

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat3:533.54:462.510:43-0.110:310.95:096:56Full Moon1Sat
2Sun4:303.65:312.611:28-0.211:131.15:086:57Full Moon2Sun
3Mon5:073.76:162.612:11-0.25:066:58Full Moon3Mon
4Tue5:433.77:002.512:53-0.25:056:58Full Moon4Tue
5Wed6:183.67:462.512:341.31:35-0.15:046:59Waning Gibbous5Wed
6Thu6:543.48:322.41:151.42:19-0.15:037:00Waning Gibbous6Thu
7Fri7:313.29:202.31:571.43:030.05:027:01Waning Gibbous7Fri
8Sat8:133.010:092.32:461.43:500.05:017:02Waning Gibbous8Sat
9Sun9:022.810:562.33:471.44:380.15:007:03Third Quarter9Sun
10Mon10:012.511:432.34:551.35:260.14:597:04Third Quarter10Mon
11Tue11:102.36:001.16:140.24:587:05Third Quarter11Tue
12Wed12:292.512:222.27:000.87:000.44:577:06Third Quarter12Wed
13Thu1:132.81:322.27:540.57:440.54:567:07Waning Crescent13Thu
14Fri1:553.12:362.38:460.28:270.74:557:07Waning Crescent14Fri
15Sat2:373.53:352.59:36-0.19:110.94:547:08Waning Crescent15Sat
16Sun3:203.84:302.610:26-0.39:561.14:547:09New Moon16Sun
17Mon4:034.15:232.711:15-0.510:431.34:537:10New Moon17Mon
18Tue4:474.36:152.812:05-0.64:527:11New Moon18Tue
19Wed5:334.47:082.812:55-0.64:517:12New Moon19Wed
20Thu6:234.38:012.812:281.41:45-0.64:517:13Waxing Crescent20Thu
21Fri7:164.08:552.81:261.42:35-0.54:507:13Waxing Crescent21Fri
22Sat8:143.79:482.82:291.33:27-0.44:497:14Waxing Crescent22Sat
23Sun9:163.210:412.83:381.24:19-0.24:497:15First Quarter23Sun
24Mon10:212.811:322.94:491.05:110.04:487:16First Quarter24Mon
25Tue11:292.45:580.86:030.24:477:17First Quarter25Tue
26Wed12:223.012:372.27:010.56:520.44:477:17Waxing Gibbous26Wed
27Thu1:103.21:442.17:580.37:400.74:467:18Waxing Gibbous27Thu
28Fri1:563.42:462.18:500.18:260.94:467:19Waxing Gibbous28Fri
29Sat2:393.53:412.29:390.09:111.14:457:20Waxing Gibbous29Sat
30Sun3:203.74:302.410:24-0.19:561.34:457:20Full Moon30Sun
31Mon3:593.85:152.511:07-0.110:401.44:447:21Full Moon31Mon
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 spring phase. Tonight's moon is 89% 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 maximum.

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 Gibbous (89% illuminated). This places Blackslough Landing, San Joaquin River, CA in a spring tide cycle, so tidal ranges are near their weekly maximum 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