37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

59°
H -°
L 55°
WSW
5mph
Low tide
5:36 am

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

TIDE TIMES for Thursday, September 3, 2026
The tide is currently falling in Blackslough Landing, San Joaquin River, CA.
Next low tide : in 2h 41m at 5:36 am (0.4 ft)
Next high tide : 11:37 am (2.3 ft)
Sunset today : 7:32 pm
Sunrise tomorrow : 6:37 am
Moon phase : Third Quarter (56% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - May 1903

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri7:473.79:312.61:551.33:13-0.45:106:55Waxing Crescent1Fri
2Sat8:443.510:272.52:571.34:08-0.35:096:56First Quarter2Sat
3Sun9:493.211:232.64:101.35:06-0.25:076:57First Quarter3Sun
4Mon10:592.95:251.16:020.05:066:58First Quarter4Mon
5Tue12:182.712:102.76:340.96:560.15:056:59First Quarter5Tue
6Wed1:112.91:202.57:370.67:460.25:046:59Waxing Gibbous6Wed
7Thu2:003.12:262.58:350.38:340.45:037:00Waxing Gibbous7Thu
8Fri2:463.33:252.59:280.09:210.65:027:01Waxing Gibbous8Fri
9Sat3:293.54:182.510:17-0.110:060.85:017:02Full Moon9Sat
10Sun4:093.75:072.611:04-0.210:501.05:007:03Full Moon10Sun
11Mon4:493.85:542.611:49-0.311:341.14:597:04Full Moon11Mon
12Tue5:273.86:402.612:33-0.34:587:05Full Moon12Tue
13Wed6:053.77:262.612:171.31:16-0.24:577:06Waning Gibbous13Wed
14Thu6:423.68:132.51:011.42:00-0.24:567:07Waning Gibbous14Thu
15Fri7:213.49:012.41:461.42:44-0.14:557:08Waning Gibbous15Fri
16Sat8:033.19:492.42:341.43:300.04:547:08Waning Gibbous16Sat
17Sun8:502.810:372.33:311.44:170.14:547:09Third Quarter17Sun
18Mon9:452.611:242.44:341.35:060.14:537:10Third Quarter18Mon
19Tue10:482.45:391.15:540.24:527:11Third Quarter19Tue
20Wed12:102.511:56 AM2.26:390.96:410.34:517:12Third Quarter20Wed
21Thu12:552.71:032.27:340.77:250.54:507:13Waning Crescent21Thu
22Fri1:382.92:082.28:250.48:080.74:507:13Waning Crescent22Fri
23Sat2:193.23:072.49:130.28:510.94:497:14Waning Crescent23Sat
24Sun3:003.64:012.510:01-0.19:341.04:487:15Waning Crescent24Sun
25Mon3:403.94:532.610:49-0.310:181.24:487:16New Moon25Mon
26Tue4:214.15:442.711:36-0.411:041.34:477:17New Moon26Tue
27Wed5:044.36:352.812:24-0.54:477:17New Moon27Wed
28Thu5:504.37:272.81:13-0.64:467:18Waxing Crescent28Thu
29Fri6:394.18:202.812:481.42:02-0.54:467:19Waxing Crescent29Fri
30Sat7:323.99:132.81:471.42:52-0.44:457:20Waxing Crescent30Sat
31Sun8:323.510:062.92:531.33:43-0.34:457:20Waxing 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 neap phase. Tonight's moon is 56% 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 (56% 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