37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

69°
H -°
L 54°
W
11mph
Low tide
4:19 am

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

TIDE TIMES for Wednesday, September 16, 2026
The tide is currently falling in Blackslough Landing, San Joaquin River, CA.
Next low tide : in 6h 38m at 4:19 am (0.4 ft)
Next high tide : 10:23 am (2.4 ft)
Sunset today : 7:13 pm
Sunrise tomorrow : 6:47 am
Moon phase : Waxing Crescent (22% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

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

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue7:482.87:363.51:470.21:441.16:085:56Waxing Crescent1Tue
2Wed8:392.68:193.32:360.22:281.26:095:55Waxing Crescent2Wed
3Thu9:332.59:053.23:270.33:171.46:105:53First Quarter3Thu
4Fri10:282.39:573.04:210.44:141.56:105:51First Quarter4Fri
5Sat11:242.310:542.95:180.45:171.56:115:50First Quarter5Sat
6Sun12:202.36:130.46:191.46:125:48First Quarter6Sun
7Mon1:132.37:060.37:161.26:135:47First Quarter7Mon
8Tue12:552.82:012.57:540.38:081.06:145:45Waxing Gibbous8Tue
9Wed1:532.82:442.78:380.38:570.86:155:44Waxing Gibbous9Wed
10Thu2:462.93:242.99:200.39:440.66:165:43Waxing Gibbous10Thu
11Fri3:362.94:013.110:000.410:290.36:175:41Full Moon11Fri
12Sat4:233.04:363.410:390.511:140.26:185:40Full Moon12Sat
13Sun5:103.05:113.611:170.76:195:38Full Moon13Sun
14Mon5:583.05:473.712:000.011:54 AM0.96:205:37Full Moon14Mon
15Tue6:482.96:253.812:46-0.112:321.06:215:35Waning Gibbous15Tue
16Wed7:412.87:073.81:35-0.21:111.26:225:34Waning Gibbous16Wed
17Thu8:382.77:563.72:27-0.21:571.36:235:33Waning Gibbous17Thu
18Fri9:372.68:533.63:22-0.12:571.46:245:31Third Quarter18Fri
19Sat10:382.59:593.44:22-0.14:121.46:255:30Third Quarter19Sat
20Sun11:382.511:093.25:230.05:301.36:265:29Third Quarter20Sun
21Mon12:362.66:210.06:391.16:275:27Third Quarter21Mon
22Tue12:203.01:292.87:160.17:420.86:285:26Waning Crescent22Tue
23Wed1:292.92:183.08:060.18:390.56:295:25Waning Crescent23Wed
24Thu2:322.93:033.28:540.39:320.26:305:23Waning Crescent24Thu
25Fri3:292.83:453.49:390.410:220.06:315:22New Moon25Fri
26Sat4:212.84:243.610:230.611:10-0.16:325:21New Moon26Sat
27Sun5:102.85:023.711:050.811:55-0.26:335:20New Moon27Sun
28Mon5:572.85:403.711:471.06:345:18New Moon28Mon
29Tue6:432.76:163.612:39-0.212:291.16:355:17Waxing Crescent29Tue
30Wed7:312.66:543.51:23-0.11:111.36:365:16Waxing Crescent30Wed
31Thu8:202.57:323.32:08-0.11:541.46:375:15Waxing Crescent31Thu
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 22% 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 (22% 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