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

TIDE TIMES for Thursday, June 4, 2026
The tide is currently rising in Blackslough Landing, San Joaquin River, CA.

Next low tide (tomorrow) : 3:18 am (1.7 ft)
Next high tide : in 4h 35m at 10:23 pm (2.3 ft)
Sunset today : 8:24 pm
Sunrise tomorrow : 5:43 am
Moon phase : Waning Gibbous (83% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - May 2028

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Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date
1	Mon	10:52	3.0			5:19	1.5	6:28	-0.2	6:08	7:57		1	Mon
2	Tue	12:49	2.4	12:10	2.7	6:45	1.2	7:21	-0.1	6:07	7:57		2	Tue
3	Wed	1:38	2.6	1:29	2.5	7:56	0.8	8:10	0.1	6:06	7:58		3	Wed
4	Thu	2:25	2.9	2:44	2.4	8:59	0.3	8:56	0.3	6:04	7:59		4	Thu
5	Fri	3:10	3.3	3:52	2.4	9:56	0.0	9:42	0.6	6:03	8:00		5	Fri
6	Sat	3:54	3.6	4:54	2.4	10:50	-0.3	10:27	0.8	6:02	8:01		6	Sat
7	Sun	4:37	3.9	5:50	2.5	11:42	-0.5	11:13	1.1	6:01	8:02		7	Sun
8	Mon	5:20	4.2	6:43	2.6			12:32	-0.6	6:00	8:03		8	Mon
9	Tue	6:02	4.3	7:33	2.6			1:20	-0.5	5:59	8:04		9	Tue
10	Wed	6:45	4.2	8:23	2.6	12:46	1.5	2:07	-0.4	5:58	8:05		10	Wed
11	Thu	7:29	4.1	9:13	2.5	1:34	1.6	2:55	-0.3	5:57	8:06		11	Thu
12	Fri	8:14	3.8	10:03	2.4	2:24	1.6	3:42	-0.2	5:57	8:07		12	Fri
13	Sat	9:02	3.4	10:53	2.3	3:19	1.6	4:30	-0.1	5:56	8:07		13	Sat
14	Sun	9:54	3.0	11:41	2.3	4:20	1.5	5:19	0.0	5:55	8:08		14	Sun
15	Mon	10:51	2.7			5:27	1.4	6:07	0.1	5:54	8:09		15	Mon
16	Tue	12:27	2.3	11:54 AM	2.3	6:34	1.1	6:54	0.2	5:53	8:10		16	Tue
17	Wed	1:11	2.4	1:00	2.1	7:37	0.9	7:39	0.4	5:52	8:11		17	Wed
18	Thu	1:53	2.6	2:07	2.0	8:33	0.6	8:21	0.5	5:52	8:12		18	Thu
19	Fri	2:34	2.8	3:12	2.0	9:24	0.3	9:02	0.8	5:51	8:13		19	Fri
20	Sat	3:12	3.1	4:10	2.1	10:12	0.1	9:41	1.0	5:50	8:13		20	Sat
21	Sun	3:50	3.4	5:03	2.2	10:58	-0.1	10:20	1.3	5:49	8:14		21	Sun
22	Mon	4:26	3.7	5:53	2.4	11:43	-0.2	10:57	1.5	5:49	8:15		22	Mon
23	Tue	5:02	3.9	6:40	2.5			12:27	-0.3	5:48	8:16		23	Tue
24	Wed	5:39	4.1	7:27	2.5			1:12	-0.3	5:48	8:17		24	Wed
25	Thu	6:17	4.2	8:15	2.5	12:13	1.7	1:57	-0.4	5:47	8:17		25	Thu
26	Fri	6:58	4.1	9:04	2.5	12:55	1.8	2:42	-0.4	5:46	8:18		26	Fri
27	Sat	7:44	3.9	9:53	2.5	1:47	1.7	3:28	-0.4	5:46	8:19		27	Sat
28	Sun	8:36	3.6	10:41	2.5	2:51	1.6	4:14	-0.4	5:46	8:20		28	Sun
29	Mon	9:36	3.2	11:29	2.7	4:06	1.4	5:02	-0.2	5:45	8:20		29	Mon
30	Tue	10:46	2.8			5:25	1.2	5:50	-0.1	5:45	8:21		30	Tue
31	Wed	12:15	2.8	12:02	2.4	6:40	0.9	6:38	0.2	5:44	8:22		31	Wed
Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date

Tidal Data Source: (9415021)

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What time does the tide turn (slack tide) in Blackslough Landing, San Joaquin River, CA today?

Slack tide in Blackslough Landing, San Joaquin River, CA is approximately 12:50 am — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

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 83% 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 (83% 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

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