37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

56°
H 90°
L 54°
WSW
1mph
High tide
9:29 am

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

TIDE TIMES for Tuesday, September 15, 2026
The tide is currently rising in Blackslough Landing, San Joaquin River, CA.
Next low tide : 3:02 pm (1.4 ft)
Next high tide : in 4h 31m at 9:29 am (2.6 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 - May 1869

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat8:533.310:332.43:091.44:14-0.15:157:03Third Quarter1Sat
2Sun9:483.011:272.34:121.55:080.05:147:04Third Quarter2Sun
3Mon10:482.75:181.46:010.15:137:05Third Quarter3Mon
4Tue12:192.311:50 AM2.56:221.26:520.25:127:06Third Quarter4Tue
5Wed1:082.412:542.47:201.07:390.25:117:07Waning Crescent5Wed
6Thu1:522.51:542.38:130.78:230.35:107:08Waning Crescent6Thu
7Fri2:332.72:502.49:020.59:050.55:097:08Waning Crescent7Fri
8Sat3:112.93:422.49:490.29:450.65:087:09Waning Crescent8Sat
9Sun3:473.14:302.510:330.110:240.85:077:10New Moon9Sun
10Mon4:213.45:172.511:17-0.111:011.05:067:11New Moon10Mon
11Tue4:543.56:032.611:59-0.211:381.25:057:12New Moon11Tue
12Wed5:263.76:512.612:42-0.35:047:13New Moon12Wed
13Thu5:593.77:402.612:121.41:26-0.35:037:14Waxing Crescent13Thu
14Fri6:343.78:312.512:451.52:11-0.35:027:15Waxing Crescent14Fri
15Sat7:153.69:242.51:221.62:59-0.35:017:16Waxing Crescent15Sat
16Sun8:053.510:172.52:141.63:51-0.35:007:16Waxing Crescent16Sun
17Mon9:043.211:102.53:331.64:45-0.24:597:17First Quarter17Mon
18Tue10:163.04:571.45:40-0.14:597:18First Quarter18Tue
19Wed12:022.611:33 AM2.86:111.16:330.04:587:19First Quarter19Wed
20Thu12:522.912:492.67:160.87:240.24:577:20Waxing Gibbous20Thu
21Fri1:413.22:012.58:160.48:120.44:577:21Waxing Gibbous21Fri
22Sat2:273.53:062.59:120.09:000.64:567:21Waxing Gibbous22Sat
23Sun3:113.84:062.610:05-0.29:470.84:557:22Waxing Gibbous23Sun
24Mon3:554.05:012.710:56-0.410:341.14:557:23Full Moon24Mon
25Tue4:384.25:532.711:45-0.511:211.34:547:24Full Moon25Tue
26Wed5:204.26:432.712:32-0.54:537:25Full Moon26Wed
27Thu6:024.17:342.712:091.41:19-0.44:537:25Waning Gibbous27Thu
28Fri6:453.98:242.612:581.52:05-0.34:527:26Waning Gibbous28Fri
29Sat7:303.69:142.61:491.62:52-0.24:527:27Waning Gibbous29Sat
30Sun8:183.310:032.52:441.63:40-0.14:527:28Waning Gibbous30Sun
31Mon9:103.010:522.53:451.54:290.14:517:28Third Quarter31Mon
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