37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

87°
H 89°
L 56°
WSW
12mph
High tide
7:13 pm

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

TIDE TIMES for Saturday, September 12, 2026
The tide is currently rising in Blackslough Landing, San Joaquin River, CA.
Next low tide (tomorrow) : 1:50 am (0.3 ft)
Next high tide : in 5h 34m at 7:13 pm (3.5 ft)
Sunset today : 7:18 pm
Sunrise tomorrow : 6:45 am
Moon phase : New Moon (3% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Mar 1875

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon12:412.011:46 AM3.43:381.77:370.46:446:06Third Quarter1Mon
2Tue1:482.012:483.56:371.88:290.36:436:07Waning Crescent2Tue
3Wed2:452.11:473.67:441.79:170.16:416:08Waning Crescent3Wed
4Thu3:312.22:433.68:411.510:010.06:406:09Waning Crescent4Thu
5Fri4:112.43:343.79:351.310:42-0.16:386:10Waning Crescent5Fri
6Sat4:472.64:243.610:281.011:21-0.16:376:11New Moon6Sat
7Sun5:222.85:143.511:200.711:570.06:356:12New Moon7Sun
8Mon5:573.16:053.312:120.46:346:12New Moon8Mon
9Tue6:323.36:593.012:330.21:040.16:326:13Waxing Crescent9Tue
10Wed7:093.67:562.71:070.51:580.06:316:14Waxing Crescent10Wed
11Thu7:503.78:572.51:400.82:56-0.16:296:15Waxing Crescent11Thu
12Fri8:353.810:022.32:131.13:580.06:286:16First Quarter12Fri
13Sat9:273.911:112.12:491.45:040.06:266:17First Quarter13Sat
14Sun10:273.83:441.66:100.16:256:18First Quarter14Sun
15Mon12:232.111:34 AM3.75:191.77:140.16:236:19First Quarter15Mon
16Tue1:352.112:433.66:401.78:110.16:226:20Waxing Gibbous16Tue
17Wed2:362.21:503.57:491.59:010.16:206:21Waxing Gibbous17Wed
18Thu3:212.42:493.48:501.29:470.06:196:22Waxing Gibbous18Thu
19Fri4:002.63:423.39:451.010:280.16:176:23Waxing Gibbous19Fri
20Sat4:352.74:313.110:360.711:060.16:166:24Full Moon20Sat
21Sun5:082.95:173.011:230.411:430.36:146:25Full Moon21Sun
22Mon5:413.06:022.812:080.36:136:26Full Moon22Mon
23Tue6:123.16:472.712:170.512:510.26:116:27Full Moon23Tue
24Wed6:433.27:332.512:510.71:340.16:106:28Waning Gibbous24Wed
25Thu7:143.28:222.41:211.02:180.26:086:29Waning Gibbous25Thu
26Fri7:453.39:132.21:471.23:060.26:066:29Waning Gibbous26Fri
27Sat8:193.310:092.11:591.53:590.36:056:30Waning Gibbous27Sat
28Sun9:003.211:092.01:581.64:580.46:036:31Third Quarter28Sun
29Mon9:523.22:231.75:590.36:026:32Third Quarter29Mon
30Tue12:122.010:55 AM3.13:121.76:560.26:006:33Third Quarter30Tue
31Wed1:122.012:053.16:231.67:480.15:596:34Third 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 spring phase. Tonight's moon is 3% 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 New Moon (3% 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