37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

78°
H 79°
L 56°
W
14mph
Low tide
2:25 pm

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

TIDE TIMES for Monday, August 31, 2026
The tide is currently falling in Blackslough Landing, San Joaquin River, CA.
Next low tide : in 37m at 2:25 pm (0.9 ft)
Next high tide : 8:34 pm (3.6 ft)
Sunset today : 7:36 pm
Sunrise tomorrow : 6:35 am
Moon phase : Waning Gibbous (86% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Jan 1908

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed3:412.43:004.38:391.410:25-0.37:214:56Waning Crescent1Wed
2Thu4:362.63:474.59:291.611:15-0.57:214:57New Moon2Thu
3Fri5:282.74:364.710:241.77:224:57New Moon3Fri
4Sat6:182.85:254.612:04-0.611:22 AM1.67:224:58New Moon4Sat
5Sun7:082.86:174.412:52-0.612:211.67:224:59Waxing Crescent5Sun
6Mon7:572.97:114.11:40-0.61:231.47:225:00Waxing Crescent6Mon
7Tue8:472.98:093.62:27-0.42:281.37:225:01Waxing Crescent7Tue
8Wed9:363.09:113.13:14-0.23:361.17:225:02First Quarter8Wed
9Thu10:253.110:162.64:010.04:460.97:225:03First Quarter9Thu
10Fri11:133.211:252.24:500.35:550.77:225:04First Quarter10Fri
11Sat12:013.35:390.56:580.47:215:05First Quarter11Sat
12Sun12:362.012:503.56:290.87:560.37:215:06Waxing Gibbous12Sun
13Mon1:472.01:373.67:181.18:480.27:215:07Waxing Gibbous13Mon
14Tue2:522.12:233.88:071.39:360.17:215:08Waxing Gibbous14Tue
15Wed3:472.23:073.98:561.510:210.07:205:09Waxing Gibbous15Wed
16Thu4:342.43:494.09:431.611:050.07:205:10Full Moon16Thu
17Fri5:162.54:294.010:291.711:460.07:205:11Full Moon17Fri
18Sat5:562.65:084.011:141.67:195:12Full Moon18Sat
19Sun6:362.65:453.812:27-0.111:59 AM1.67:195:13Full Moon19Sun
20Mon7:152.66:223.61:06-0.112:431.57:185:14Waning Gibbous20Mon
21Tue7:552.66:593.31:43-0.11:281.47:185:15Waning Gibbous21Tue
22Wed8:352.67:403.02:200.02:171.37:175:16Waning Gibbous22Wed
23Thu9:132.68:272.72:540.13:121.27:175:17Waning Gibbous23Thu
24Fri9:512.79:252.43:270.34:141.07:165:18Third Quarter24Fri
25Sat10:292.910:352.23:580.65:200.97:165:19Third Quarter25Sat
26Sun11:103.111:532.14:280.86:230.67:155:20Third Quarter26Sun
27Mon11:563.45:051.17:220.47:145:22Third Quarter27Mon
28Tue1:112.112:473.86:031.48:190.17:145:23Waning Crescent28Tue
29Wed2:222.21:424.17:101.59:13-0.17:135:24Waning Crescent29Wed
30Thu3:242.42:374.48:151.610:05-0.37:125:25Waning Crescent30Thu
31Fri4:182.63:324.69:171.610:55-0.47:115:26New Moon31Fri
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 spring phase. Tonight's moon is 86% 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 Waning Gibbous (86% 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