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

TIDE TIMES for Tuesday, June 23, 2026
The tide is currently falling in Blackslough Landing, San Joaquin River, CA.
Next low tide : in 5h 17m at 8:05 am (0.5 ft)
Next high tide : 1:42 pm (1.9 ft)
Sunset today : 8:32 pm
Sunrise tomorrow : 5:43 am
Moon phase : First Quarter (69% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Feb 2042

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat3:282.22:274.18:101.79:530.17:095:29Waxing Gibbous1Sat
2Sun4:172.33:194.19:071.810:390.17:085:30Waxing Gibbous2Sun
3Mon4:572.54:064.110:011.711:220.07:075:31Full Moon3Mon
4Tue5:342.64:494.010:511.67:065:32Full Moon4Tue
5Wed6:102.65:313.712:020.011:40 AM1.47:055:33Full Moon5Wed
6Thu6:452.66:123.512:390.012:271.27:045:34Full Moon6Thu
7Fri7:202.76:543.11:150.01:141.17:035:35Waning Gibbous7Fri
8Sat7:552.77:382.81:480.12:010.97:025:36Waning Gibbous8Sat
9Sun8:292.88:262.52:200.32:510.87:015:38Waning Gibbous9Sun
10Mon9:022.99:202.32:480.63:450.77:005:39Waning Gibbous10Mon
11Tue9:373.010:212.13:080.94:450.76:595:40Third Quarter11Tue
12Wed10:143.211:312.03:081.25:470.66:585:41Third Quarter12Wed
13Thu10:573.33:191.46:480.56:575:42Third Quarter13Thu
14Fri12:442.011:50 AM3.63:551.67:450.46:565:43Third Quarter14Fri
15Sat1:562.112:503.85:001.88:390.26:545:44Waning Crescent15Sat
16Sun2:572.21:514.07:231.89:300.06:535:45Waning Crescent16Sun
17Mon3:472.32:494.18:341.710:17-0.26:525:46Waning Crescent17Mon
18Tue4:302.53:444.29:361.511:02-0.36:515:47New Moon18Tue
19Wed5:102.74:374.110:351.211:44-0.36:495:48New Moon19Wed
20Thu5:492.95:293.911:330.96:485:49New Moon20Thu
21Fri6:283.16:233.612:25-0.312:300.66:475:51New Moon21Fri
22Sat7:083.37:193.21:04-0.11:280.36:465:52Waxing Crescent22Sat
23Sun7:493.58:182.81:410.22:260.26:445:53Waxing Crescent23Sun
24Mon8:333.69:212.52:190.63:270.16:435:54Waxing Crescent24Mon
25Tue9:203.710:272.22:580.94:310.16:415:55First Quarter25Tue
26Wed10:113.811:372.03:421.25:370.26:405:56First Quarter26Wed
27Thu11:073.74:411.56:420.26:395:57First Quarter27Thu
28Fri12:512.012:083.75:531.77:420.36:375:58First Quarter28Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9415021)

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

Show All
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 10:53 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 69% 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 First Quarter (69% 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