37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

55°
H 81°
L 56°
SW
6mph
High tide
10:23 am

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

TIDE TIMES for Wednesday, September 16, 2026
The tide is currently rising in Blackslough Landing, San Joaquin River, CA.
Next low tide : 3:38 pm (1.6 ft)
Next high tide : in 5h 12m at 10:23 am (2.4 ft)
Sunset today : 7:12 pm
Sunrise tomorrow : 6:48 am
Moon phase : Waxing Crescent (31% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Mar 1867

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri2:092.21:483.37:491.38:560.36:446:06Waning Crescent1Fri
2Sat3:002.32:393.48:411.39:410.26:436:07Waning Crescent2Sat
3Sun3:442.53:273.49:301.110:230.16:416:08Waning Crescent3Sun
4Mon4:252.74:123.510:181.011:040.16:406:09New Moon4Mon
5Tue5:032.84:563.511:040.811:420.16:386:09New Moon5Tue
6Wed5:403.05:403.411:500.76:376:10New Moon6Wed
7Thu6:163.26:263.212:200.212:370.56:356:11New Moon7Thu
8Fri6:533.37:153.112:560.31:250.46:346:12Waxing Crescent8Fri
9Sat7:323.48:092.81:320.52:160.36:326:13Waxing Crescent9Sat
10Sun8:143.59:072.62:080.73:120.26:316:14Waxing Crescent10Sun
11Mon9:023.510:102.42:481.04:130.26:296:15First Quarter11Mon
12Tue9:563.611:162.33:381.25:170.26:286:16First Quarter12Tue
13Wed10:573.64:471.36:210.16:266:17First Quarter13Wed
14Thu12:232.312:033.56:021.37:210.16:256:18First Quarter14Thu
15Fri1:282.41:093.57:111.38:170.06:236:19Waxing Gibbous15Fri
16Sat2:262.52:133.58:141.19:080.06:226:20Waxing Gibbous16Sat
17Sun3:172.73:113.59:120.99:560.06:206:21Waxing Gibbous17Sun
18Mon4:023.04:043.510:060.710:410.16:196:22Full Moon18Mon
19Tue4:443.14:543.410:580.511:240.26:176:23Full Moon19Tue
20Wed5:243.35:413.211:470.36:166:24Full Moon20Wed
21Thu6:023.36:283.112:050.312:340.26:146:25Full Moon21Thu
22Fri6:413.37:152.912:450.51:200.26:136:26Waning Gibbous22Fri
23Sat7:193.38:032.71:250.72:060.26:116:27Waning Gibbous23Sat
24Sun7:583.28:532.52:040.92:540.26:106:28Waning Gibbous24Sun
25Mon8:393.19:452.32:451.13:450.36:086:29Waning Gibbous25Mon
26Tue9:243.010:402.23:301.24:400.36:076:29Third Quarter26Tue
27Wed10:142.911:382.14:251.35:370.36:056:30Third Quarter27Wed
28Thu11:102.95:281.36:330.36:046:31Third Quarter28Thu
29Fri12:362.112:102.86:301.37:260.36:026:32Third Quarter29Fri
30Sat1:302.21:112.87:271.28:140.26:006:33Waning Crescent30Sat
31Sun2:202.32:082.98:201.08:590.25:596:34Waning Crescent31Sun
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 transitional phase. Tonight's moon is 31% 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 shifting between spring and neap.

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 Crescent (31% illuminated). This places Blackslough Landing, San Joaquin River, CA in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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