37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

73°
H -°
L 54°
W
11mph
High tide
11:32 pm

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

TIDE TIMES for Friday, September 18, 2026
The tide is currently rising in Blackslough Landing, San Joaquin River, CA.
Next low tide (tomorrow) : 7:15 am (0.6 ft)
Next high tide : in 4h 18m at 11:32 pm (3.3 ft)
Sunset today : 7:09 pm
Sunrise tomorrow : 6:50 am
Moon phase : First Quarter (49% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Feb 1864

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon11:213.53:591.26:570.47:175:35Third Quarter1Mon
2Tue12:432.112:173.75:071.47:530.37:165:36Waning Crescent2Tue
3Wed1:512.21:173.96:491.58:470.17:155:37Waning Crescent3Wed
4Thu2:522.32:174.18:011.59:37-0.17:145:38Waning Crescent4Thu
5Fri3:442.63:144.29:041.410:26-0.27:135:40Waning Crescent5Fri
6Sat4:312.84:084.310:051.211:12-0.37:135:41New Moon6Sat
7Sun5:163.05:014.211:031.011:57-0.27:125:42New Moon7Sun
8Mon6:003.35:543.912:010.77:115:43New Moon8Mon
9Tue6:443.46:483.612:40-0.112:570.67:095:44Waxing Crescent9Tue
10Wed7:293.67:423.21:230.11:540.47:085:45Waxing Crescent10Wed
11Thu8:163.68:392.92:050.32:520.47:075:46Waxing Crescent11Thu
12Fri9:043.79:392.52:490.63:520.47:065:47First Quarter12Fri
13Sat9:533.610:412.33:350.84:550.47:055:48First Quarter13Sat
14Sun10:463.611:452.14:281.15:570.47:045:49First Quarter14Sun
15Mon11:403.55:261.36:570.47:035:51First Quarter15Mon
16Tue12:522.112:373.56:271.47:530.47:025:52Waxing Gibbous16Tue
17Wed1:562.11:333.57:261.48:430.37:005:53Waxing Gibbous17Wed
18Thu2:512.22:253.58:201.39:290.36:595:54Waxing Gibbous18Thu
19Fri3:362.43:143.59:121.310:120.26:585:55Waxing Gibbous19Fri
20Sat4:162.53:593.510:011.110:520.26:575:56Full Moon20Sat
21Sun4:532.74:413.410:481.011:310.26:555:57Full Moon21Sun
22Mon5:292.85:233.311:330.96:545:58Full Moon22Mon
23Tue6:042.96:033.212:070.212:170.76:535:59Full Moon23Tue
24Wed6:383.06:453.012:420.31:000.76:516:00Waning Gibbous24Wed
25Thu7:123.17:282.81:140.51:440.66:506:01Waning Gibbous25Thu
26Fri7:453.28:152.61:440.72:300.66:496:02Waning Gibbous26Fri
27Sat8:193.29:072.42:070.93:210.56:476:03Waning Gibbous27Sat
28Sun8:573.310:072.22:221.14:190.56:466:04Third Quarter28Sun
29Mon9:433.411:122.12:431.25:220.46:446:05Third Quarter29Mon
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 neap phase. Tonight's moon is 49% 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 minimum.

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 (49% illuminated). This places Blackslough Landing, San Joaquin River, CA in a neap tide cycle, so tidal ranges are near their weekly minimum 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