37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

56°
H 82°
L 56°
WNW
6mph
High tide
8:29 am

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

TIDE TIMES for Monday, August 31, 2026
The tide is currently rising in Blackslough Landing, San Joaquin River, CA.
Next low tide : 2:25 pm (0.9 ft)
Next high tide : in 3h 01m at 8:29 am (2.9 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 - Oct 1908

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu10:032.39:003.53:510.32:091.66:015:49First Quarter1Thu
2Fri11:072.310:003.54:540.22:561.76:025:47First Quarter2Fri
3Sat12:122.35:570.25:151.76:035:46First Quarter3Sat
4Sun1:122.46:570.16:421.66:035:44First Quarter4Sun
5Mon12:273.52:062.67:510.07:491.36:045:43Waxing Gibbous5Mon
6Tue1:383.52:532.88:420.08:490.96:055:41Waxing Gibbous6Tue
7Wed2:433.53:373.19:290.09:450.66:065:40Waxing Gibbous7Wed
8Thu3:433.44:183.310:140.110:400.26:075:38Full Moon8Thu
9Fri4:393.34:583.610:580.311:330.06:085:37Full Moon9Fri
10Sat5:323.25:383.811:400.56:095:35Full Moon10Sat
11Sun6:263.06:193.812:24-0.212:220.86:105:34Waning Gibbous11Sun
12Mon7:202.87:003.81:15-0.31:051.06:115:33Waning Gibbous12Mon
13Tue8:152.67:443.72:06-0.21:491.36:125:31Waning Gibbous13Tue
14Wed9:122.58:313.52:58-0.12:371.56:135:30Waning Gibbous14Wed
15Thu10:102.49:233.33:530.13:341.66:145:28Third Quarter15Thu
16Fri11:092.310:213.14:510.24:411.66:155:27Third Quarter16Fri
17Sat12:072.25:480.25:481.66:165:25Third Quarter17Sat
18Sun1:022.36:430.26:501.46:175:24Third Quarter18Sun
19Mon12:262.81:492.47:330.27:461.16:185:23Waning Crescent19Mon
20Tue1:272.72:312.58:180.28:370.96:195:21Waning Crescent20Tue
21Wed2:232.73:082.79:000.39:240.66:205:20Waning Crescent21Wed
22Thu3:142.73:432.99:390.310:090.46:215:19Waning Crescent22Thu
23Fri4:022.74:163.110:170.510:530.26:225:18New Moon23Fri
24Sat4:482.74:483.310:530.611:360.06:235:16New Moon24Sat
25Sun5:342.75:183.411:270.96:245:15New Moon25Sun
26Mon6:202.75:483.612:18-0.111:58 AM1.16:255:14New Moon26Mon
27Tue7:082.66:193.71:02-0.112:251.36:265:13Waxing Crescent27Tue
28Wed8:002.56:543.71:47-0.212:481.56:275:11Waxing Crescent28Wed
29Thu8:562.47:373.62:36-0.21:141.66:285:10Waxing Crescent29Thu
30Fri9:552.38:303.53:30-0.11:561.76:295:09First Quarter30Fri
31Sat10:542.39:363.34:28-0.13:431.76:305:08First Quarter31Sat
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