37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

57°
H -°
L 56°
SW
7mph
High tide
9:26 am

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

TIDE TIMES for Tuesday, September 1, 2026
The tide is currently rising in Blackslough Landing, San Joaquin River, CA.
Next low tide : 2:46 pm (1.2 ft)
Next high tide : in 5h 50m at 9:26 am (2.7 ft)
Sunset today : 7:35 pm
Sunrise tomorrow : 6:35 am
Moon phase : Waning Gibbous (77% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Dec 1906

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat6:022.55:193.711:311.47:024:46Full Moon1Sat
2Sun6:462.55:523.712:36-0.212:101.57:034:46Full Moon2Sun
3Mon7:312.56:253.61:18-0.212:491.67:044:46Waning Gibbous3Mon
4Tue8:182.56:583.41:59-0.21:301.67:054:46Waning Gibbous4Tue
5Wed9:052.47:373.12:42-0.12:161.67:064:46Waning Gibbous5Wed
6Thu9:532.48:232.93:25-0.13:191.67:074:46Waning Gibbous6Thu
7Fri10:392.49:222.64:110.04:311.47:084:46Third Quarter7Fri
8Sat11:252.510:352.44:580.15:411.27:084:46Third Quarter8Sat
9Sun12:092.75:450.26:430.97:094:46Third Quarter9Sun
10Mon12:533.06:320.47:400.57:104:46Third Quarter10Mon
11Tue1:122.21:373.47:180.68:340.27:114:46Waning Crescent11Tue
12Wed2:222.32:223.88:040.89:26-0.17:124:46Waning Crescent12Wed
13Thu3:252.53:074.18:511.010:17-0.47:124:46Waning Crescent13Thu
14Fri4:232.63:534.49:401.211:08-0.67:134:47New Moon14Fri
15Sat5:172.74:394.610:311.311:58-0.77:144:47New Moon15Sat
16Sun6:092.85:274.611:251.47:144:47New Moon16Sun
17Mon7:022.86:174.412:48-0.712:211.57:154:47Waxing Crescent17Mon
18Tue7:542.87:094.11:38-0.61:201.47:164:48Waxing Crescent18Tue
19Wed8:472.88:053.72:27-0.52:221.47:164:48Waxing Crescent19Wed
20Thu9:392.89:043.23:16-0.33:291.37:174:49First Quarter20Thu
21Fri10:302.910:062.74:06-0.14:371.17:174:49First Quarter21Fri
22Sat11:202.911:122.44:560.15:450.97:184:50First Quarter22Sat
23Sun12:083.05:460.36:480.77:184:50First Quarter23Sun
24Mon12:192.112:543.16:350.57:450.57:194:51Waxing Gibbous24Mon
25Tue1:262.01:393.37:230.88:360.37:194:51Waxing Gibbous25Tue
26Wed2:292.02:223.58:081.09:240.17:204:52Waxing Gibbous26Wed
27Thu3:252.23:033.68:531.210:080.07:204:52Waxing Gibbous27Thu
28Fri4:142.33:423.89:371.310:520.07:204:53Full Moon28Fri
29Sat4:592.44:203.910:211.511:34-0.17:214:54Full Moon29Sat
30Sun5:422.54:563.911:041.67:214:54Full Moon30Sun
31Mon6:242.65:303.912:15-0.111:47 AM1.67:214:55Full Moon31Mon
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 77% 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 Waning Gibbous (77% 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