37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

61°
H -°
L 56°
WSW
10mph
High tide
7:46 am

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

TIDE TIMES for Sunday, September 13, 2026
The tide is currently rising in Blackslough Landing, San Joaquin River, CA.
Next low tide : 1:51 pm (0.8 ft)
Next high tide : in 5h 47m at 7:46 am (3.0 ft)
Sunset today : 7:16 pm
Sunrise tomorrow : 6:46 am
Moon phase : Waxing Crescent (8% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Apr 1874

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed5:082.95:302.711:360.311:460.55:576:35Full Moon1Wed
2Thu5:383.06:142.612:180.15:556:36Full Moon2Thu
3Fri6:073.16:592.512:180.712:590.15:546:37Full Moon3Fri
4Sat6:353.27:462.412:471.01:410.05:526:38Waning Gibbous4Sat
5Sun7:023.38:362.31:101.22:250.15:516:39Waning Gibbous5Sun
6Mon7:323.49:312.21:171.43:140.15:496:40Waning Gibbous6Mon
7Tue8:103.410:292.11:251.64:090.25:486:41Waning Gibbous7Tue
8Wed8:583.311:312.01:521.65:100.15:466:42Third Quarter8Wed
9Thu9:583.32:381.76:110.15:456:43Third Quarter9Thu
10Fri12:312.111:11 AM3.25:091.77:070.05:436:43Third Quarter10Fri
11Sat1:262.112:303.16:531.47:58-0.15:426:44Waning Crescent11Sat
12Sun2:142.31:453.18:001.18:44-0.15:416:45Waning Crescent12Sun
13Mon2:562.62:523.08:590.69:280.05:396:46Waning Crescent13Mon
14Tue3:353.03:533.09:560.210:100.25:386:47Waning Crescent14Tue
15Wed4:143.44:512.910:50-0.210:520.45:366:48New Moon15Wed
16Thu4:533.75:472.811:43-0.511:330.75:356:49New Moon16Thu
17Fri5:324.06:432.712:35-0.65:346:50New Moon17Fri
18Sat6:144.17:392.612:141.01:27-0.65:326:51Waxing Crescent18Sat
19Sun6:584.18:372.512:561.32:20-0.55:316:52Waxing Crescent19Sun
20Mon7:464.09:352.31:421.53:15-0.35:296:53Waxing Crescent20Mon
21Tue8:393.710:352.22:361.64:12-0.15:286:54First Quarter21Tue
22Wed9:373.411:352.23:421.75:110.05:276:54First Quarter22Wed
23Thu10:403.14:581.66:080.15:256:55First Quarter23Thu
24Fri12:332.211:46 AM2.86:101.47:010.15:246:56First Quarter24Fri
25Sat1:242.212:522.67:141.27:480.25:236:57Waxing Gibbous25Sat
26Sun2:072.31:552.48:110.88:310.25:226:58Waxing Gibbous26Sun
27Mon2:442.52:522.49:020.59:110.35:206:59Waxing Gibbous27Mon
28Tue3:192.73:442.39:490.39:490.55:197:00Waxing Gibbous28Tue
29Wed3:522.94:322.410:330.010:250.75:187:01Full Moon29Wed
30Thu4:233.25:182.411:16-0.111:001.05:177:02Full Moon30Thu
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 spring phase. Tonight's moon is 8% 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 maximum.

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 (8% illuminated). This places Blackslough Landing, San Joaquin River, CA in a spring tide cycle, so tidal ranges are near their weekly maximum 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