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

TIDE TIMES for Thursday, August 6, 2026
The tide is currently rising in Blackslough Landing, San Joaquin River, CA.
Next low tide : 7:05 am (0.5 ft)
Next high tide (tomorrow) : in 1h 08m at 11:27 pm (3.9 ft)
Sunset today : 8:10 pm
Sunrise tomorrow : 6:12 am
Moon phase : Third Quarter (53% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Apr 1950

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat4:163.04:333.110:350.210:520.25:516:28Full Moon1Sat
2Sun4:523.35:273.011:27-0.111:300.55:496:29Full Moon2Sun
3Mon5:283.76:222.912:19-0.45:476:30Full Moon3Mon
4Tue6:073.97:192.712:070.81:11-0.55:466:31Waning Gibbous4Tue
5Wed6:484.18:172.512:451.12:05-0.55:446:31Waning Gibbous5Wed
6Thu7:354.19:182.41:241.33:02-0.45:436:32Waning Gibbous6Thu
7Fri8:274.010:212.22:091.54:03-0.25:416:33Third Quarter7Fri
8Sat9:273.811:262.23:101.65:06-0.15:406:34Third Quarter8Sat
9Sun10:333.54:321.76:080.05:396:35Third Quarter9Sun
10Mon12:302.211:42 AM3.25:531.57:050.15:376:36Third Quarter10Mon
11Tue1:292.212:513.07:041.37:560.15:366:37Waning Crescent11Tue
12Wed2:172.31:562.88:071.08:410.15:346:38Waning Crescent12Wed
13Thu2:572.52:542.69:020.79:230.25:336:39Waning Crescent13Thu
14Fri3:332.73:462.59:510.410:010.35:316:40Waning Crescent14Fri
15Sat4:062.94:352.510:370.110:390.55:306:41New Moon15Sat
16Sun4:383.15:202.511:210.011:140.85:286:42New Moon16Sun
17Mon5:093.36:052.512:03-0.15:276:43New Moon17Mon
18Tue5:383.46:502.512:44-0.15:266:43New Moon18Tue
19Wed6:073.57:372.412:211.31:25-0.15:246:44Waxing Crescent19Wed
20Thu6:373.58:252.312:481.52:090.05:236:45Waxing Crescent20Thu
21Fri7:083.49:172.21:041.62:550.05:226:46Waxing Crescent21Fri
22Sat7:453.410:112.11:081.73:470.15:206:47Waxing Crescent22Sat
23Sun8:313.211:072.01:341.74:420.15:196:48First Quarter23Sun
24Mon9:273.02:221.75:380.05:186:49First Quarter24Mon
25Tue12:012.010:35 AM2.95:111.66:300.05:166:50First Quarter25Tue
26Wed12:502.111:53 AM2.76:341.37:180.05:156:51First Quarter26Wed
27Thu1:352.31:112.67:380.98:020.05:146:52Waxing Gibbous27Thu
28Fri2:152.62:212.68:350.58:440.25:136:53Waxing Gibbous28Fri
29Sat2:533.03:262.69:290.09:240.55:116:54Waxing Gibbous29Sat
30Sun4:313.55:262.611:22-0.311:050.86:107:55Full Moon30Sun
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9415021)

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

Show All
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 3:16 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 neap phase. Tonight's moon is 53% 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 Third Quarter (53% 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