37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

48°
H 79°
L 43°
WNW
8mph
High tide
8:23 am

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

TIDE TIMES for Tuesday, October 13, 2026
The tide is currently rising in Blackslough Landing, San Joaquin River, CA.
Next low tide : 1:48 pm (1.4 ft)
Next high tide : in 1h 16m at 8:23 am (2.6 ft)
Sunset today : 6:30 pm
Sunrise tomorrow : 7:12 am
Moon phase : Waxing Crescent (10% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Apr 1820

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat6:363.48:012.412:431.11:520.05:576:35Waning Gibbous1Sat
2Sun7:063.58:552.312:571.42:400.05:556:36Waning Gibbous2Sun
3Mon7:433.69:532.21:071.53:340.15:546:37Waning Gibbous3Mon
4Tue8:303.610:562.11:311.64:350.15:526:38Third Quarter4Tue
5Wed9:283.511:592.12:111.75:390.05:516:39Third Quarter5Wed
6Thu10:403.43:221.76:39-0.15:496:40Third Quarter6Thu
7Fri12:592.112:003.26:151.57:34-0.15:486:41Third Quarter7Fri
8Sat1:512.31:173.17:311.28:23-0.15:466:42Waning Crescent8Sat
9Sun2:362.52:273.08:350.79:09-0.15:456:43Waning Crescent9Sun
10Mon3:182.93:303.09:340.39:520.15:436:44Waning Crescent10Mon
11Tue3:573.24:292.910:29-0.110:330.35:426:44New Moon11Tue
12Wed4:363.65:242.811:22-0.411:140.65:406:45New Moon12Wed
13Thu5:153.86:182.712:12-0.55:396:46New Moon13Thu
14Fri5:544.07:112.61:02-0.55:386:47Waxing Crescent14Fri
15Sat6:354.08:052.512:361.21:51-0.45:366:48Waxing Crescent15Sat
16Sun7:183.98:592.41:181.42:42-0.25:356:49Waxing Crescent16Sun
17Mon8:043.79:552.22:021.63:350.05:336:50Waxing Crescent17Mon
18Tue8:543.410:522.12:551.74:320.15:326:51First Quarter18Tue
19Wed9:513.211:492.14:031.75:290.25:316:52First Quarter19Wed
20Thu10:542.95:171.66:240.25:296:53First Quarter20Thu
21Fri12:432.111:59 AM2.66:261.47:130.25:286:54First Quarter21Fri
22Sat1:302.11:042.57:271.17:580.25:276:55Waxing Gibbous22Sat
23Sun2:112.32:052.48:210.78:390.35:256:55Waxing Gibbous23Sun
24Mon2:482.53:022.39:110.49:170.45:246:56Waxing Gibbous24Mon
25Tue3:222.83:532.39:570.29:530.65:236:57Waxing Gibbous25Tue
26Wed3:543.04:422.410:410.010:280.85:216:58Full Moon26Wed
27Thu4:253.35:292.511:25-0.211:011.15:206:59Full Moon27Thu
28Fri4:553.56:162.512:07-0.25:197:00Full Moon28Fri
29Sat5:253.77:052.512:51-0.35:187:01Full Moon29Sat
30Sun5:573.87:562.41:36-0.35:177:02Waning Gibbous30Sun
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 10% 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 (10% 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