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

TIDE TIMES for Monday, August 3, 2026
The tide is currently falling in Blackslough Landing, San Joaquin River, CA.
Next low tide : in 3h 14m at 3:52 am (1.0 ft)
Next high tide : 9:22 am (2.7 ft)
Sunset today : 8:12 pm
Sunrise tomorrow : 6:10 am
Moon phase : Waning Gibbous (74% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Jun 1956

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri12:072.511:36 AM2.26:311.16:270.45:448:22Third Quarter1Fri
2Sat12:482.712:472.17:320.87:100.65:448:23Third Quarter2Sat
3Sun1:303.01:592.08:270.57:520.85:438:23Waning Crescent3Sun
4Mon2:123.33:082.19:190.38:351.15:438:24Waning Crescent4Mon
5Tue2:553.64:092.310:090.09:191.35:438:25Waning Crescent5Tue
6Wed3:394.05:062.410:59-0.210:061.45:438:25Waning Crescent6Wed
7Thu4:244.35:582.611:48-0.410:571.65:428:26New Moon7Thu
8Fri5:104.56:492.712:37-0.55:428:26New Moon8Fri
9Sat5:584.67:392.81:25-0.65:428:27New Moon9Sat
10Sun6:484.58:282.912:491.62:13-0.65:428:27Waxing Crescent10Sun
11Mon7:404.29:192.91:501.53:00-0.55:428:28Waxing Crescent11Mon
12Tue8:373.810:093.02:541.43:48-0.35:428:28Waxing Crescent12Tue
13Wed9:373.310:583.14:011.24:35-0.15:428:29First Quarter13Wed
14Thu10:422.911:473.25:101.05:240.15:428:29First Quarter14Thu
15Fri11:492.56:200.86:130.45:428:29First Quarter15Fri
16Sat12:363.412:592.27:250.57:030.75:428:30First Quarter16Sat
17Sun1:253.52:092.18:260.37:530.95:428:30Waxing Gibbous17Sun
18Mon2:133.73:172.19:210.28:421.25:428:30Waxing Gibbous18Mon
19Tue3:003.84:182.210:110.19:311.45:428:31Waxing Gibbous19Tue
20Wed3:454.05:092.310:590.010:191.55:438:31Waxing Gibbous20Wed
21Thu4:294.15:542.511:430.011:061.65:438:31Full Moon21Thu
22Fri5:104.16:372.612:260.05:438:31Full Moon22Fri
23Sat5:494.17:182.61:080.05:438:31Full Moon23Sat
24Sun6:283.97:592.612:401.71:480.05:448:32Full Moon24Sun
25Mon7:063.78:402.71:261.62:270.05:448:32Waning Gibbous25Mon
26Tue7:443.59:212.72:131.63:050.05:448:32Waning Gibbous26Tue
27Wed8:243.210:012.73:021.53:410.15:458:32Waning Gibbous27Wed
28Thu9:082.810:412.83:561.44:170.35:458:32Waning Gibbous28Thu
29Fri10:002.611:202.94:551.24:510.55:458:32Third Quarter29Fri
30Sat11:042.35:581.15:230.75:468:32Third Quarter30Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9415021)

Common Questions About Blackslough Landing, San Joaquin River, CA Tides

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What time does the tide turn (slack tide) in Blackslough Landing, San Joaquin River, CA today?

Slack tide in Blackslough Landing, San Joaquin River, CA is approximately 6:37 am — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

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 74% 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 (74% 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