37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

77°
H 77°
L 55°
W
9mph
Low tide
2:46 pm

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

TIDE TIMES for Tuesday, September 1, 2026
The tide is currently falling in Blackslough Landing, San Joaquin River, CA.
Next low tide : in 45m at 2:46 pm (1.2 ft)
Next high tide : 9:12 pm (3.8 ft)
Sunset today : 7:35 pm
Sunrise tomorrow : 6:35 am
Moon phase : Waning Gibbous (77% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Aug 1906

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed1:584.43:232.79:150.18:391.65:077:15Waxing Gibbous1Wed
2Thu2:534.54:162.810:070.09:361.65:087:14Waxing Gibbous2Thu
3Fri3:454.65:053.010:56-0.110:331.55:097:13Full Moon3Fri
4Sat4:364.55:503.111:43-0.111:281.45:107:12Full Moon4Sat
5Sun5:244.46:353.212:280.05:117:11Full Moon5Sun
6Mon6:134.17:183.212:221.31:110.15:127:10Waning Gibbous6Mon
7Tue7:013.78:023.21:151.21:530.25:137:09Waning Gibbous7Tue
8Wed7:513.38:453.22:091.12:340.45:137:08Waning Gibbous8Wed
9Thu8:433.09:293.23:041.03:160.65:147:07Waning Gibbous9Thu
10Fri9:382.610:133.24:011.03:590.95:157:06Third Quarter10Fri
11Sat10:382.410:583.25:010.94:461.15:167:04Third Quarter11Sat
12Sun11:402.311:463.36:000.85:361.35:177:03Third Quarter12Sun
13Mon12:442.26:570.76:291.55:187:02Third Quarter13Mon
14Tue12:353.41:472.37:500.67:211.65:197:01Waning Crescent14Tue
15Wed1:263.62:432.48:400.58:111.65:207:00Waning Crescent15Wed
16Thu2:153.73:332.59:270.49:001.65:206:58Waning Crescent16Thu
17Fri3:013.94:172.710:110.39:471.65:216:57Waning Crescent17Fri
18Sat3:464.04:582.810:540.210:341.55:226:56New Moon18Sat
19Sun4:294.05:373.011:350.111:211.35:236:54New Moon19Sun
20Mon5:113.96:163.112:140.15:246:53New Moon20Mon
21Tue5:553.86:543.212:091.212:520.25:256:52New Moon21Tue
22Wed6:413.67:343.312:581.01:290.35:266:50Waxing Crescent22Wed
23Thu7:333.38:153.41:500.92:060.55:276:49Waxing Crescent23Thu
24Fri8:303.08:593.52:460.72:440.85:276:48Waxing Crescent24Fri
25Sat9:342.79:473.73:480.63:261.05:286:46First Quarter25Sat
26Sun10:422.510:413.84:540.54:181.35:296:45First Quarter26Sun
27Mon11:522.411:393.95:590.45:231.55:306:43First Quarter27Mon
28Tue1:022.47:020.36:311.55:316:42Waxing Gibbous28Tue
29Wed12:414.02:072.58:000.27:351.55:326:41Waxing Gibbous29Wed
30Thu1:424.13:042.78:540.18:351.55:336:39Waxing Gibbous30Thu
31Fri2:404.13:532.99:440.19:321.35:336:38Waxing Gibbous31Fri
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 77% 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 Waning Gibbous (77% 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