37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

77°
H -°
L 61°
WNW
10mph
Low tide
9:53 pm

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

TIDE TIMES for Tuesday, August 25, 2026
The tide is currently falling in Blackslough Landing, San Joaquin River, CA.
Next low tide (tomorrow) : in 36m at 9:53 pm (1.7 ft)
Next high tide : 3:55 am (3.8 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 - Mar 1919

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat4:462.94:423.610:470.711:250.16:385:58New Moon1Sat
2Sun5:243.25:323.511:380.56:365:59New Moon2Sun
3Mon6:033.46:233.312:040.212:300.36:356:00New Moon3Mon
4Tue6:433.67:173.112:430.41:220.16:346:01Waxing Crescent4Tue
5Wed7:253.88:132.81:210.62:170.16:326:02Waxing Crescent5Wed
6Thu8:123.99:132.62:010.93:150.16:316:03Waxing Crescent6Thu
7Fri9:033.910:162.42:451.14:180.16:296:04First Quarter7Fri
8Sat10:003.811:222.23:401.35:220.26:286:05First Quarter8Sat
9Sun11:023.74:501.46:260.26:266:06First Quarter9Sun
10Mon12:292.212:073.56:031.47:240.26:256:07First Quarter10Mon
11Tue1:332.31:123.47:111.38:180.16:236:08Waxing Gibbous11Tue
12Wed2:292.42:133.38:131.19:070.16:226:09Waxing Gibbous12Wed
13Thu3:162.63:083.39:090.99:510.26:206:10Waxing Gibbous13Thu
14Fri3:582.83:593.210:010.710:330.26:196:11Full Moon14Fri
15Sat4:352.94:453.110:500.511:130.36:176:12Full Moon15Sat
16Sun5:113.15:293.011:350.411:510.56:166:12Full Moon16Sun
17Mon5:463.26:132.912:190.36:146:13Full Moon17Mon
18Tue6:213.36:572.812:270.61:030.26:136:14Waning Gibbous18Tue
19Wed6:553.37:422.61:030.81:460.26:116:15Waning Gibbous19Wed
20Thu7:293.38:292.41:361.02:320.36:106:16Waning Gibbous20Thu
21Fri8:053.29:202.32:071.23:200.36:086:17Waning Gibbous21Fri
22Sat8:443.210:142.12:331.34:140.46:076:18Third Quarter22Sat
23Sun9:293.111:112.02:481.45:110.46:056:19Third Quarter23Sun
24Mon10:243.03:351.56:090.36:046:20Third Quarter24Mon
25Tue12:102.011:27 AM3.05:421.47:030.26:026:21Third Quarter25Tue
26Wed1:072.112:343.06:521.37:520.26:006:22Waning Crescent26Wed
27Thu1:582.31:403.07:521.08:380.15:596:23Waning Crescent27Thu
28Fri2:432.52:413.08:470.89:220.25:576:24Waning Crescent28Fri
29Sat3:252.93:373.19:410.410:040.25:566:25Waning Crescent29Sat
30Sun5:043.25:323.111:330.111:460.46:547:25New Moon30Sun
31Mon5:443.56:253.112:24-0.16:537:26New 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