37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

76°
H 80°
L 53°
WNW
7mph
Low tide
4:16 pm

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

TIDE TIMES for Friday, September 4, 2026
The tide is currently falling in Blackslough Landing, San Joaquin River, CA.
Next low tide : in 2h 10m at 4:16 pm (1.8 ft)
Next high tide : 11:56 pm (4.0 ft)
Sunset today : 7:30 pm
Sunrise tomorrow : 6:38 am
Moon phase : Third Quarter (45% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Aug 1892

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon12:072.16:260.85:331.55:097:14First Quarter1Mon
2Tue1:172.17:220.76:231.75:097:13First Quarter2Tue
3Wed12:433.62:222.28:150.57:161.95:107:12Waxing Gibbous3Wed
4Thu1:333.93:192.49:050.48:082.05:117:11Waxing Gibbous4Thu
5Fri2:234.14:072.59:530.38:582.05:127:10Waxing Gibbous5Fri
6Sat3:104.24:502.710:380.19:491.95:137:09Full Moon6Sat
7Sun3:564.35:312.811:210.010:411.75:147:07Full Moon7Sun
8Mon4:414.36:102.912:02-0.15:157:06Full Moon8Mon
9Tue5:274.16:493.012:42-0.15:167:05Full Moon9Tue
10Wed6:163.97:283.112:291.31:200.05:167:04Waning Gibbous10Wed
11Thu7:093.58:083.31:251.01:560.25:177:03Waning Gibbous11Thu
12Fri8:073.18:493.52:250.82:330.55:187:02Waning Gibbous12Fri
13Sat9:122.79:343.73:280.63:100.85:197:00Third Quarter13Sat
14Sun10:212.410:233.94:350.53:501.25:206:59Third Quarter14Sun
15Mon11:342.311:164.05:430.44:411.55:216:58Third Quarter15Mon
16Tue12:492.26:480.35:481.75:226:57Third Quarter16Tue
17Wed12:154.22:022.37:480.26:571.85:236:55Waning Crescent17Wed
18Thu1:154.23:052.48:450.28:011.95:236:54Waning Crescent18Thu
19Fri2:144.33:552.69:360.29:001.85:246:53Waning Crescent19Fri
20Sat3:094.34:372.710:240.19:561.65:256:51New Moon20Sat
21Sun4:004.25:162.811:080.110:491.55:266:50New Moon21Sun
22Mon4:464.05:532.911:480.111:391.35:276:48New Moon22Mon
23Tue5:313.86:293.012:270.25:286:47New Moon23Tue
24Wed6:153.57:043.012:281.11:030.35:296:46Waxing Crescent24Wed
25Thu7:003.27:403.01:150.91:380.55:296:44Waxing Crescent25Thu
26Fri7:482.98:153.12:030.82:110.75:306:43Waxing Crescent26Fri
27Sat8:392.68:503.12:530.82:431.05:316:41Waxing Crescent27Sat
28Sun9:352.49:283.23:470.73:111.35:326:40First Quarter28Sun
29Mon10:362.210:103.34:450.73:271.65:336:38First Quarter29Mon
30Tue11:412.211:003.45:460.73:251.75:346:37First Quarter30Tue
31Wed12:492.26:450.65:371.95:356:36First Quarter31Wed
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 45% 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 Third Quarter (45% 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