37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

69°
H 90°
L 54°
W
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 19m 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 - Dec 1868

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue6:492.75:544.112:38-0.411:59 AM1.57:104:53Waning Gibbous1Tue
2Wed7:402.76:384.01:24-0.512:481.57:114:53Waning Gibbous2Wed
3Thu8:322.77:293.72:11-0.51:451.57:124:53Waning Gibbous3Thu
4Fri9:242.78:283.43:01-0.42:541.47:134:53Waning Gibbous4Fri
5Sat10:172.79:353.03:52-0.34:101.37:144:53Third Quarter5Sat
6Sun11:092.810:482.74:45-0.15:241.07:154:53Third Quarter6Sun
7Mon12:003.05:390.16:320.77:164:53Third Quarter7Mon
8Tue12:022.412:503.26:310.37:350.47:174:53Waning Crescent8Tue
9Wed1:152.31:393.57:220.58:320.17:174:53Waning Crescent9Wed
10Thu2:232.32:263.78:110.79:24-0.17:184:53Waning Crescent10Thu
11Fri3:242.33:113.98:590.910:14-0.27:194:53Waning Crescent11Fri
12Sat4:192.53:544.19:461.111:01-0.37:204:53New Moon12Sat
13Sun5:092.64:354.110:341.311:46-0.37:204:54New Moon13Sun
14Mon5:552.65:154.111:211.47:214:54New Moon14Mon
15Tue6:412.75:553.912:29-0.312:071.57:224:54New Moon15Tue
16Wed7:262.76:343.71:12-0.312:541.57:224:55Waxing Crescent16Wed
17Thu8:112.67:143.41:54-0.21:431.57:234:55Waxing Crescent17Thu
18Fri8:572.67:573.12:37-0.12:351.57:244:55Waxing Crescent18Fri
19Sat9:422.58:462.83:200.03:331.47:244:56Waxing Crescent19Sat
20Sun10:272.59:422.54:040.14:361.37:254:56First Quarter20Sun
21Mon11:112.610:462.24:480.25:391.17:254:57First Quarter21Mon
22Tue11:552.711:552.05:340.46:390.87:264:57First Quarter22Tue
23Wed12:383.06:190.67:330.67:264:58First Quarter23Wed
24Thu1:042.01:213.27:040.88:240.47:274:58Waxing Gibbous24Thu
25Fri2:102.12:043.57:471.09:130.17:274:59Waxing Gibbous25Fri
26Sat3:092.22:463.88:311.210:00-0.17:275:00Waxing Gibbous26Sat
27Sun4:032.43:284.19:161.410:46-0.27:285:00Waxing Gibbous27Sun
28Mon4:532.64:114.310:031.511:33-0.47:285:01Full Moon28Mon
29Tue5:412.74:554.410:521.57:285:02Full Moon29Tue
30Wed6:292.85:414.312:19-0.511:45 AM1.57:285:03Full Moon30Wed
31Thu7:172.96:294.21:04-0.512:421.47:295:03Waning Gibbous31Thu
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