37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

57°
H 89°
L 55°
WSW
5mph
Low tide
7:15 am

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

TIDE TIMES for Saturday, September 19, 2026
The tide is currently falling in Blackslough Landing, San Joaquin River, CA.
Next low tide : in 1h 41m at 7:15 am (0.6 ft)
Next high tide : 1:25 pm (2.1 ft)
Sunset today : 7:07 pm
Sunrise tomorrow : 6:51 am
Moon phase : First Quarter (59% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Feb 1863

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun4:142.43:413.89:381.410:490.17:175:35Waxing Gibbous1Sun
2Mon4:532.54:233.710:261.311:280.07:165:36Full Moon2Mon
3Tue5:312.65:033.611:131.27:155:38Full Moon3Tue
4Wed6:072.85:433.512:050.011:59 AM1.17:145:39Full Moon4Wed
5Thu6:432.96:233.312:410.112:441.07:135:40Full Moon5Thu
6Fri7:183.07:063.01:140.21:300.97:125:41Waning Gibbous6Fri
7Sat7:523.17:542.81:450.42:180.77:115:42Waning Gibbous7Sat
8Sun8:283.28:492.52:120.63:120.77:105:43Waning Gibbous8Sun
9Mon9:073.49:522.32:340.84:140.67:095:44Third Quarter9Mon
10Tue9:533.511:022.22:561.15:190.57:085:45Third Quarter10Tue
11Wed10:463.73:301.36:240.37:075:46Third Quarter11Wed
12Thu12:152.111:47 AM3.84:391.57:250.27:065:48Third Quarter12Thu
13Fri1:252.212:534.06:301.58:220.07:055:49Waning Crescent13Fri
14Sat2:292.31:574.17:451.59:15-0.17:045:50Waning Crescent14Sat
15Sun3:242.52:584.18:501.310:04-0.27:025:51Waning Crescent15Sun
16Mon4:112.83:544.19:511.110:51-0.27:015:52New Moon16Mon
17Tue4:553.04:473.910:490.811:35-0.17:005:53New Moon17Tue
18Wed5:383.25:383.711:440.66:595:54New Moon18Wed
19Thu6:203.46:293.412:170.012:370.56:585:55Waxing Crescent19Thu
20Fri7:013.57:193.112:580.21:290.46:565:56Waxing Crescent20Fri
21Sat7:433.58:112.81:380.42:210.46:555:57Waxing Crescent21Sat
22Sun8:263.59:042.52:180.73:150.46:545:58Waxing Crescent22Sun
23Mon9:113.410:002.32:590.94:110.56:525:59First Quarter23Mon
24Tue9:583.410:592.13:441.25:110.56:516:00First Quarter24Tue
25Wed10:493.34:361.36:100.56:506:01First Quarter25Wed
26Thu12:012.011:44 AM3.35:371.47:070.56:486:02First Quarter26Thu
27Fri1:042.012:413.36:391.48:000.46:476:03Waxing Gibbous27Fri
28Sat2:032.11:373.37:361.48:480.36:466:04Waxing Gibbous28Sat
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 neap phase. Tonight's moon is 59% 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 minimum.

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 (59% illuminated). This places Blackslough Landing, San Joaquin River, CA in a neap tide cycle, so tidal ranges are near their weekly minimum 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