37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

48°
H 87°
L 48°
NW
3mph
High tide
10:05 am

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

TIDE TIMES for Thursday, October 15, 2026
The tide is currently rising in Blackslough Landing, San Joaquin River, CA.
Next low tide : 2:56 pm (1.7 ft)
Next high tide : in 3h 28m at 10:05 am (2.3 ft)
Sunset today : 6:28 pm
Sunrise tomorrow : 7:14 am
Moon phase : Waxing Crescent (24% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Mar 1817

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat4:202.53:423.99:401.410:53-0.26:446:06Waxing Gibbous1Sat
2Sun4:592.74:333.910:351.111:35-0.26:436:07Full Moon2Sun
3Mon5:372.95:243.711:300.86:416:08Full Moon3Mon
4Tue6:153.16:173.512:14-0.112:240.56:406:09Full Moon4Tue
5Wed6:543.37:123.212:520.01:190.26:386:10Waning Gibbous5Wed
6Thu7:343.58:112.81:300.32:150.16:376:11Waning Gibbous6Thu
7Fri8:183.79:132.52:080.63:150.06:356:12Waning Gibbous7Fri
8Sat9:053.710:182.32:471.04:180.06:346:13Third Quarter8Sat
9Sun9:573.811:282.13:321.35:240.16:326:14Third Quarter9Sun
10Mon10:563.74:351.56:290.16:316:15Third Quarter10Mon
11Tue12:402.111:59 AM3.75:501.67:310.26:296:16Third Quarter11Tue
12Wed1:512.11:043.67:001.68:260.16:286:16Waning Crescent12Wed
13Thu2:512.32:063.68:041.59:160.16:266:17Waning Crescent13Thu
14Fri3:362.43:023.59:011.310:010.16:256:18Waning Crescent14Fri
15Sat4:132.53:513.49:541.110:420.16:236:19Waning Crescent15Sat
16Sun4:482.74:373.310:430.911:210.16:226:20New Moon16Sun
17Mon5:212.85:213.111:290.611:570.26:206:21New Moon17Mon
18Tue5:542.96:042.912:130.56:196:22New Moon18Tue
19Wed6:262.96:482.812:310.412:560.36:176:23New Moon19Wed
20Thu6:573.07:342.61:040.61:390.36:166:24Waxing Crescent20Thu
21Fri7:273.18:232.41:350.82:240.36:146:25Waxing Crescent21Fri
22Sat7:573.19:152.32:001.13:110.36:136:26Waxing Crescent22Sat
23Sun8:303.210:122.12:101.34:050.36:116:27Waxing Crescent23Sun
24Mon9:103.211:132.02:111.55:050.46:096:28First Quarter24Mon
25Tue10:003.22:381.66:060.36:086:29First Quarter25Tue
26Wed12:182.011:02 AM3.23:281.77:040.26:066:30First Quarter26Wed
27Thu1:202.112:133.26:251.77:570.16:056:30First Quarter27Thu
28Fri2:142.21:243.37:361.58:46-0.16:036:31Waxing Gibbous28Fri
29Sat2:592.42:283.38:361.29:31-0.16:026:32Waxing Gibbous29Sat
30Sun3:402.63:283.39:320.810:14-0.16:006:33Waxing Gibbous30Sun
31Mon4:182.94:243.310:270.410:550.05:596:34Full Moon31Mon
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 24% 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 (24% 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