37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

55°
H 83°
L 52°
WNW
2mph
Low tide
9:44 am

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

TIDE TIMES for Tuesday, September 22, 2026
The tide is currently falling in Blackslough Landing, San Joaquin River, CA.
Next low tide : in 3h 04m at 9:44 am (0.3 ft)
Next high tide : 3:55 pm (2.4 ft)
Sunset today : 7:02 pm
Sunrise tomorrow : 6:53 am
Moon phase : Waxing Gibbous (84% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Feb 1859

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue5:002.44:143.910:131.611:290.07:175:35New Moon1Tue
2Wed5:362.54:553.711:011.47:165:36New Moon2Wed
3Thu6:112.65:343.512:060.011:47 AM1.37:155:38New Moon3Thu
4Fri6:452.66:133.312:410.012:331.17:145:39New Moon4Fri
5Sat7:192.76:543.01:130.11:181.07:135:40Waxing Crescent5Sat
6Sun7:512.87:392.71:430.22:060.87:125:41Waxing Crescent6Sun
7Mon8:223.08:312.52:070.52:570.77:115:42Waxing Crescent7Mon
8Tue8:553.29:322.32:240.83:560.67:105:43Waxing Crescent8Tue
9Wed9:323.410:432.12:331.05:000.57:095:44First Quarter9Wed
10Thu10:173.611:592.02:531.36:070.47:085:45First Quarter10Thu
11Fri11:133.83:281.57:110.27:075:46First Quarter11Fri
12Sat1:162.012:184.04:261.78:100.17:065:48Waxing Gibbous12Sat
13Sun2:252.21:264.26:481.89:05-0.17:055:49Waxing Gibbous13Sun
14Mon3:222.32:314.38:131.79:56-0.27:045:50Waxing Gibbous14Mon
15Tue4:092.53:314.39:221.410:43-0.37:025:51Waxing Gibbous15Tue
16Wed4:522.74:264.110:241.111:28-0.37:015:52Full Moon16Wed
17Thu5:333.05:203.911:230.87:005:53Full Moon17Thu
18Fri6:133.26:123.512:09-0.212:200.66:595:54Full Moon18Fri
19Sat6:533.47:053.212:490.01:150.46:585:55Waning Gibbous19Sat
20Sun7:343.57:592.81:270.32:090.36:565:56Waning Gibbous20Sun
21Mon8:163.58:552.52:050.63:040.36:555:57Waning Gibbous21Mon
22Tue8:593.69:542.22:430.94:020.36:545:58Third Quarter22Tue
23Wed9:453.510:562.13:231.25:030.46:525:59Third Quarter23Wed
24Thu10:353.54:091.46:050.56:516:00Third Quarter24Thu
25Fri12:022.011:30 AM3.55:111.67:050.56:506:01Third Quarter25Fri
26Sat1:112.012:283.46:191.78:000.46:486:02Waning Crescent26Sat
27Sun2:152.01:273.47:211.68:500.36:476:03Waning Crescent27Sun
28Mon3:052.12:213.48:181.59:340.26:466:04Waning Crescent28Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9415021)

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

Collapse All
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 84% 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 (84% 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