37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

77°
H 89°
L 56°
W
6mph
High tide
1:25 pm

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

TIDE TIMES for Saturday, September 19, 2026
The tide is currently rising in Blackslough Landing, San Joaquin River, CA.
Next low tide : 6:42 pm (1.8 ft)
Next high tide : in 1h 30m at 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 - Jun 1862

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun6:573.49:022.41:261.62:39-0.14:517:29Waxing Crescent1Sun
2Mon7:393.19:452.42:171.63:19-0.14:507:29Waxing Crescent2Mon
3Tue8:282.810:272.53:201.43:590.04:507:30First Quarter3Tue
4Wed9:292.511:082.74:301.24:400.24:507:31First Quarter4Wed
5Thu10:432.311:503.05:391.05:210.44:507:31First Quarter5Thu
6Fri12:032.16:410.66:050.74:497:32First Quarter6Fri
7Sat12:333.31:202.17:390.36:510.94:497:32Waxing Gibbous7Sat
8Sun1:183.72:312.28:340.07:401.24:497:33Waxing Gibbous8Sun
9Mon2:064.13:342.49:28-0.28:311.44:497:33Waxing Gibbous9Mon
10Tue2:564.44:312.610:20-0.49:271.64:497:34Full Moon10Tue
11Wed3:464.75:252.711:12-0.510:251.64:497:34Full Moon11Wed
12Thu4:364.76:162.812:02-0.64:497:35Full Moon12Thu
13Fri5:274.67:062.812:51-0.54:497:35Full Moon13Fri
14Sat6:194.47:562.912:251.51:39-0.54:497:36Waning Gibbous14Sat
15Sun7:133.98:452.91:271.42:25-0.34:497:36Waning Gibbous15Sun
16Mon8:103.59:333.02:301.33:11-0.14:497:37Waning Gibbous16Mon
17Tue9:093.010:213.03:361.13:570.14:497:37Third Quarter17Tue
18Wed10:112.511:073.14:430.94:430.34:497:37Third Quarter18Wed
19Thu11:162.211:523.25:480.75:300.64:497:37Third Quarter19Thu
20Fri12:232.06:480.66:170.94:497:38Third Quarter20Fri
21Sat12:383.41:311.97:440.47:051.14:497:38Waning Crescent21Sat
22Sun1:233.52:342.08:340.37:511.44:507:38Waning Crescent22Sun
23Mon2:073.73:302.29:220.28:371.54:507:38Waning Crescent23Mon
24Tue2:503.94:182.310:070.19:231.74:507:38Waning Crescent24Tue
25Wed3:324.05:012.510:510.110:091.74:517:39New Moon25Wed
26Thu4:114.15:432.611:330.010:551.84:517:39New Moon26Thu
27Fri4:504.06:252.612:140.04:517:39New Moon27Fri
28Sat5:273.97:062.612:53-0.14:527:39New Moon28Sat
29Sun6:033.77:462.712:261.71:31-0.14:527:39Waxing Crescent29Sun
30Mon6:423.58:262.71:131.62:070.04:527:39Waxing Crescent30Mon
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