37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

56°
H 98°
L 68°
NW
2mph
Low tide
10:30 am

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

TIDE TIMES for Tuesday, September 8, 2026
The tide is currently falling in Blackslough Landing, San Joaquin River, CA.
Next low tide : in 3h 44m at 10:30 am (0.0 ft)
Next high tide : 4:41 pm (2.7 ft)
Sunset today : 7:24 pm
Sunrise tomorrow : 6:41 am
Moon phase : Waning Crescent (7% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Feb 1882

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed4:362.54:063.810:061.411:090.17:175:36Full Moon1Wed
2Thu5:142.64:483.710:541.311:480.17:165:37Full Moon2Thu
3Fri5:512.75:293.511:401.17:155:38Full Moon3Fri
4Sat6:272.86:093.312:250.112:251.07:145:39Full Moon4Sat
5Sun7:032.96:493.11:010.21:100.97:135:40Waning Gibbous5Sun
6Mon7:382.97:312.81:340.31:560.87:125:41Waning Gibbous6Mon
7Tue8:133.08:172.62:060.52:440.87:115:42Waning Gibbous7Tue
8Wed8:483.19:092.42:330.73:360.87:105:44Waning Gibbous8Wed
9Thu9:253.210:092.22:500.94:350.77:095:45Third Quarter9Thu
10Fri10:073.311:162.12:591.15:370.67:085:46Third Quarter10Fri
11Sat10:563.53:281.36:380.57:075:47Third Quarter11Sat
12Sun12:262.111:54 AM3.64:241.57:360.37:055:48Third Quarter12Sun
13Mon1:342.112:563.86:281.58:290.17:045:49Waning Crescent13Mon
14Tue2:342.31:593.97:461.59:20-0.17:035:50Waning Crescent14Tue
15Wed3:262.52:584.08:501.310:07-0.27:025:51Waning Crescent15Wed
16Thu4:132.83:544.19:511.110:53-0.27:015:52New Moon16Thu
17Fri4:563.04:484.010:490.811:37-0.26:595:53New Moon17Fri
18Sat5:393.35:413.811:460.66:585:54New Moon18Sat
19Sun6:223.56:353.512:200.012:420.46:575:56Waxing Crescent19Sun
20Mon7:063.77:293.21:020.21:370.26:565:57Waxing Crescent20Mon
21Tue7:513.88:262.91:440.42:340.26:545:58Waxing Crescent21Tue
22Wed8:393.89:252.62:270.73:320.26:535:59Waxing Crescent22Wed
23Thu9:293.710:262.33:130.94:340.36:526:00First Quarter23Thu
24Fri10:223.611:302.24:061.25:370.46:506:01First Quarter24Fri
25Sat11:193.55:071.36:380.46:496:02First Quarter25Sat
26Sun12:352.112:173.46:111.47:340.46:486:03First Quarter26Sun
27Mon1:392.11:163.47:121.48:260.36:466:04Waxing Gibbous27Mon
28Tue2:352.22:113.38:091.39:120.36:456:05Waxing Gibbous28Tue
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 7% 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 Waning Crescent (7% 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