37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

59°
H 84°
L 56°
WNW
5mph
Low tide
1:14 pm

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

TIDE TIMES for Monday, September 28, 2026
The tide is currently falling in Blackslough Landing, San Joaquin River, CA.
Next low tide : in 3h 43m at 1:14 pm (1.1 ft)
Next high tide : 7:13 pm (3.8 ft)
Sunset today : 6:53 pm
Sunrise tomorrow : 6:58 am
Moon phase : Waning Gibbous (95% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - May 1847

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat5:333.56:492.612:43-0.25:167:02Full Moon1Sat
2Sun6:053.67:352.512:221.21:26-0.25:157:03Waning Gibbous2Sun
3Mon6:393.58:252.512:551.42:09-0.25:147:04Waning Gibbous3Mon
4Tue7:183.49:162.41:311.42:56-0.25:137:05Waning Gibbous4Tue
5Wed8:053.310:082.42:171.43:46-0.25:117:06Waning Gibbous5Wed
6Thu9:023.111:002.53:291.44:39-0.15:107:07Third Quarter6Thu
7Fri10:122.911:522.64:511.35:340.05:097:08Third Quarter7Fri
8Sat11:282.76:041.06:270.15:087:09Third Quarter8Sat
9Sun12:432.812:442.67:100.77:190.25:077:10Waning Crescent9Sun
10Mon1:323.11:552.58:090.38:080.45:067:11Waning Crescent10Mon
11Tue2:203.43:012.69:050.08:570.65:057:11Waning Crescent11Tue
12Wed3:073.74:002.79:59-0.29:450.85:047:12Waning Crescent12Wed
13Thu3:524.04:552.710:51-0.410:330.95:037:13New Moon13Thu
14Fri4:364.25:472.811:41-0.511:221.15:037:14New Moon14Fri
15Sat5:214.26:382.812:29-0.55:027:15New Moon15Sat
16Sun6:054.17:292.712:121.21:17-0.45:017:16Waxing Crescent16Sun
17Mon6:513.98:202.71:021.32:05-0.35:007:17Waxing Crescent17Mon
18Tue7:383.69:112.61:551.42:52-0.24:597:18Waxing Crescent18Tue
19Wed8:283.210:012.52:511.43:41-0.14:587:18Waxing Crescent19Wed
20Thu9:222.910:502.53:521.34:300.04:587:19First Quarter20Thu
21Fri10:202.611:382.54:561.25:200.24:577:20First Quarter21Fri
22Sat11:222.35:581.06:090.34:567:21First Quarter22Sat
23Sun12:242.612:252.16:570.86:560.44:567:22First Quarter23Sun
24Mon1:092.81:292.17:500.57:400.64:557:23Waxing Gibbous24Mon
25Tue1:513.02:282.18:400.38:240.84:547:23Waxing Gibbous25Tue
26Wed2:323.23:232.29:270.29:061.04:547:24Waxing Gibbous26Wed
27Thu3:113.44:132.410:120.09:471.14:537:25Waxing Gibbous27Thu
28Fri3:493.75:002.510:56-0.110:281.34:537:26Full Moon28Fri
29Sat4:253.85:462.611:39-0.211:081.44:527:26Full Moon29Sat
30Sun5:013.96:322.612:22-0.34:527:27Full Moon30Sun
31Mon5:383.97:192.71:05-0.34:517:28Full 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 spring phase. Tonight's moon is 95% 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 (95% 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