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

TIDE TIMES for Thursday, July 9, 2026
The tide is currently falling in Blackslough Landing, San Joaquin River, CA.
Next low tide : in 7h 09m at 8:30 am (0.3 ft)
Next high tide : 2:22 pm (2.1 ft)
Sunset today : 8:30 pm
Sunrise tomorrow : 5:51 am
Moon phase : Waning Crescent (28% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Apr 1986

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue10:093.73:441.75:530.05:506:28Third Quarter1Tue
2Wed12:132.111:19 AM3.55:201.76:550.05:496:29Third Quarter2Wed
3Thu1:182.212:313.36:401.57:510.05:476:30Waning Crescent3Thu
4Fri2:132.31:403.27:481.28:400.05:466:31Waning Crescent4Fri
5Sat2:582.52:423.08:480.99:250.15:446:32Waning Crescent5Sat
6Sun3:372.73:372.99:420.610:060.15:436:33Waning Crescent6Sun
7Mon4:132.94:272.810:320.310:450.35:416:34New Moon7Mon
8Tue4:463.05:152.711:180.111:220.55:406:34New Moon8Tue
9Wed5:193.26:012.612:020.05:386:35New Moon9Wed
10Thu5:513.36:472.512:45-0.15:376:36New Moon10Thu
11Fri6:213.47:332.512:321.01:27-0.15:356:37Waxing Crescent11Fri
12Sat6:523.48:222.41:041.22:110.05:346:38Waxing Crescent12Sat
13Sun7:243.49:132.21:321.52:570.15:326:39Waxing Crescent13Sun
14Mon8:003.310:082.11:461.63:490.25:316:40Waxing Crescent14Mon
15Tue8:433.211:052.01:501.74:450.25:296:41First Quarter15Tue
16Wed9:363.02:221.75:430.25:286:42First Quarter16Wed
17Thu12:022.010:41 AM2.95:111.76:380.15:276:43First Quarter17Thu
18Fri12:562.011:53 AM2.86:301.57:270.05:256:44First Quarter18Fri
19Sat1:442.21:052.77:331.28:120.05:246:45Waxing Gibbous19Sat
20Sun2:252.42:112.78:280.88:530.15:236:46Waxing Gibbous20Sun
21Mon3:022.73:122.79:210.49:320.25:216:46Waxing Gibbous21Mon
22Tue3:373.04:092.710:110.010:110.55:206:47Waxing Gibbous22Tue
23Wed4:133.45:052.711:02-0.310:490.85:196:48Full Moon23Wed
24Thu4:493.85:592.711:52-0.511:261.05:176:49Full Moon24Thu
25Fri5:274.16:552.712:43-0.65:166:50Full Moon25Fri
26Sat6:084.27:522.612:051.31:35-0.65:156:51Waning Gibbous26Sat
27Sun7:544.29:512.512:471.53:29-0.66:147:52Waning Gibbous27Sun
28Mon8:464.110:512.42:361.64:26-0.46:127:53Waning Gibbous28Mon
29Tue9:463.811:522.33:391.75:26-0.36:117:54Third Quarter29Tue
30Wed10:523.55:011.76:25-0.16:107:55Third Quarter30Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9415021)

Common Questions About Blackslough Landing, San Joaquin River, CA Tides

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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 11:26 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 transitional phase. Tonight's moon is 28% 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 shifting between spring and neap.

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 Crescent (28% illuminated). This places Blackslough Landing, San Joaquin River, CA in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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