37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

80°
H -°
L 54°
WNW
11mph
Low tide
6:42 pm

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

TIDE TIMES for Saturday, September 5, 2026
The tide is currently falling in Blackslough Landing, San Joaquin River, CA.
Next low tide : in 16m at 6:42 pm (1.9 ft)
Next high tide (tomorrow) : 1:07 am (4.0 ft)
Sunset today : 7:29 pm
Sunrise tomorrow : 6:39 am
Moon phase : Third Quarter (34% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Aug 1887

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon2:544.34:142.710:040.19:371.65:087:15Waxing Gibbous1Mon
2Tue3:424.34:592.810:500.110:281.65:097:14Full Moon2Tue
3Wed4:284.25:402.911:340.111:181.55:107:13Full Moon3Wed
4Thu5:114.16:213.012:160.25:107:12Full Moon4Thu
5Fri5:533.97:013.012:061.512:560.25:117:11Full Moon5Fri
6Sat6:363.67:403.012:531.41:340.35:127:09Waning Gibbous6Sat
7Sun7:193.38:203.01:411.32:120.45:137:08Waning Gibbous7Sun
8Mon8:053.09:003.02:311.22:500.65:147:07Waning Gibbous8Mon
9Tue8:562.79:413.03:241.13:280.85:157:06Waning Gibbous9Tue
10Wed9:512.510:233.14:211.04:071.05:167:05Third Quarter10Wed
11Thu10:532.311:073.25:210.94:501.25:177:04Third Quarter11Thu
12Fri11:592.211:543.46:200.85:391.45:177:03Third Quarter12Fri
13Sat1:052.37:160.76:341.65:187:01Third Quarter13Sat
14Sun12:453.62:072.48:080.57:281.65:197:00Waning Crescent14Sun
15Mon1:373.83:022.58:580.48:221.65:206:59Waning Crescent15Mon
16Tue2:294.03:512.79:450.29:141.65:216:58Waning Crescent16Tue
17Wed3:194.24:362.910:310.110:071.55:226:56New Moon17Wed
18Thu4:084.35:193.111:160.011:011.35:236:55New Moon18Thu
19Fri4:584.26:023.211:590.011:551.15:246:54New Moon19Fri
20Sat5:484.16:453.412:420.15:246:52New Moon20Sat
21Sun6:413.87:293.512:510.91:240.25:256:51Waxing Crescent21Sun
22Mon7:373.58:153.61:480.72:070.45:266:50Waxing Crescent22Mon
23Tue8:373.19:043.72:480.62:510.75:276:48Waxing Crescent23Tue
24Wed9:412.89:553.83:510.53:401.05:286:47First Quarter24Wed
25Thu10:472.610:503.84:560.54:351.25:296:45First Quarter25Thu
26Fri11:552.411:473.86:010.45:371.45:306:44First Quarter26Fri
27Sat1:032.47:020.46:391.55:316:43Waxing Gibbous27Sat
28Sun12:463.82:072.57:590.37:381.55:316:41Waxing Gibbous28Sun
29Mon1:433.83:022.68:500.38:341.55:326:40Waxing Gibbous29Mon
30Tue2:373.93:482.79:380.39:261.45:336:38Waxing Gibbous30Tue
31Wed3:273.84:282.910:220.310:151.35:346:37Full Moon31Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9415021)

Common Questions About Blackslough Landing, San Joaquin River, CA Tides

Collapse All
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 34% 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 Third Quarter (34% 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