37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

54°
H 90°
L 49°
WSW
2mph
High tide
10:59 am

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

TIDE TIMES for Friday, October 16, 2026
The tide is currently rising in Blackslough Landing, San Joaquin River, CA.
Next low tide : 3:35 pm (1.8 ft)
Next high tide : in 3h 42m at 10:59 am (2.2 ft)
Sunset today : 6:26 pm
Sunrise tomorrow : 7:15 am
Moon phase : First Quarter (33% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Feb 1815

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed11:203.45:000.86:240.57:175:35Third Quarter1Wed
2Thu12:062.012:093.45:511.17:230.47:165:36Third Quarter2Thu
3Fri1:162.01:003.56:451.38:170.37:165:37Waning Crescent3Fri
4Sat2:232.11:503.77:381.59:070.37:155:38Waning Crescent4Sat
5Sun3:202.22:393.88:291.69:530.27:145:39Waning Crescent5Sun
6Mon4:062.33:243.89:191.610:370.17:135:41Waning Crescent6Mon
7Tue4:472.54:073.910:071.611:190.17:125:42New Moon7Tue
8Wed5:252.64:473.810:531.511:580.07:115:43New Moon8Wed
9Thu6:032.65:273.711:381.47:105:44New Moon9Thu
10Fri6:402.76:053.512:360.012:221.37:095:45New Moon10Fri
11Sat7:162.76:443.31:120.01:061.17:085:46Waxing Crescent11Sat
12Sun7:522.77:263.01:460.11:521.07:065:47Waxing Crescent12Sun
13Mon8:272.88:132.72:170.32:410.97:055:48Waxing Crescent13Mon
14Tue9:022.99:092.42:450.53:370.87:045:49Waxing Crescent14Tue
15Wed9:383.110:152.23:070.84:400.67:035:51First Quarter15Wed
16Thu10:203.311:292.13:271.05:460.57:025:52First Quarter16Thu
17Fri11:103.53:581.36:500.37:015:53First Quarter17Fri
18Sat12:452.112:093.85:051.57:500.16:595:54First Quarter18Sat
19Sun1:562.21:124.06:471.68:460.06:585:55Waxing Gibbous19Sun
20Mon2:582.42:154.28:011.69:39-0.26:575:56Waxing Gibbous20Mon
21Tue3:512.63:144.39:061.510:29-0.36:565:57Waxing Gibbous21Tue
22Wed4:392.84:104.310:071.311:17-0.36:545:58Full Moon22Wed
23Thu5:233.05:044.211:051.06:535:59Full Moon23Thu
24Fri6:053.15:563.912:01-0.312:020.86:526:00Full Moon24Fri
25Sat6:483.26:493.512:44-0.212:570.66:506:01Waning Gibbous25Sat
26Sun7:313.37:433.11:260.01:520.46:496:02Waning Gibbous26Sun
27Mon8:143.48:382.82:070.32:480.46:476:03Waning Gibbous27Mon
28Tue8:593.49:372.42:490.63:460.36:466:04Waning Gibbous28Tue
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 33% 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 First Quarter (33% 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