37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

61°
H -°
L 54°
W
7mph
Low tide
8:48 am

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

TIDE TIMES for Sunday, September 6, 2026
The tide is currently falling in Blackslough Landing, San Joaquin River, CA.
Next low tide : in 7h 31m at 8:48 am (0.2 ft)
Next high tide : 3:04 pm (2.4 ft)
Sunset today : 7:27 pm
Sunrise tomorrow : 6:40 am
Moon phase : Waning Crescent (23% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Oct 1886

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri8:092.97:573.72:050.01:591.16:015:48Waxing Crescent1Fri
2Sat9:052.78:473.62:590.02:501.26:025:47Waxing Crescent2Sat
3Sun10:032.59:403.43:550.13:461.46:035:45First Quarter3Sun
4Mon11:022.410:373.24:530.24:491.46:045:44First Quarter4Mon
5Tue12:012.35:510.35:541.46:055:42First Quarter5Tue
6Wed12:572.46:460.36:541.36:065:41First Quarter6Wed
7Thu12:372.91:472.47:360.37:491.16:075:39Waxing Gibbous7Thu
8Fri1:362.82:322.68:230.38:390.96:075:38Waxing Gibbous8Fri
9Sat2:302.83:122.79:060.39:260.76:085:36Waxing Gibbous9Sat
10Sun3:192.93:492.99:470.410:120.56:095:35Waxing Gibbous10Sun
11Mon4:062.94:243.110:260.510:550.36:105:33Full Moon11Mon
12Tue4:502.94:583.211:040.611:380.26:115:32Full Moon12Tue
13Wed5:332.95:303.411:400.86:125:31Full Moon13Wed
14Thu6:182.86:023.412:200.112:151.06:135:29Full Moon14Thu
15Fri7:032.76:333.51:030.112:471.16:145:28Waning Gibbous15Fri
16Sat7:532.67:073.51:470.11:161.36:155:26Waning Gibbous16Sat
17Sun8:452.57:473.42:340.01:441.46:165:25Waning Gibbous17Sun
18Mon9:422.48:383.33:260.12:251.56:175:24Waning Gibbous18Mon
19Tue10:402.49:403.24:230.13:531.56:185:22Third Quarter19Tue
20Wed11:382.410:543.15:220.05:231.46:195:21Third Quarter20Wed
21Thu12:342.56:200.06:361.26:205:20Third Quarter21Thu
22Fri12:103.01:272.77:140.07:390.96:215:18Waning Crescent22Fri
23Sat1:223.02:163.08:050.18:370.56:225:17Waning Crescent23Sat
24Sun2:283.03:023.38:530.29:320.26:235:16Waning Crescent24Sun
25Mon3:283.03:453.69:400.310:25-0.16:245:15New Moon25Mon
26Tue4:243.04:283.910:260.511:16-0.36:255:13New Moon26Tue
27Wed5:183.05:104.011:110.76:265:12New Moon27Wed
28Thu6:102.95:524.012:06-0.411:56 AM0.96:275:11New Moon28Thu
29Fri7:012.86:353.912:54-0.412:431.16:285:10Waxing Crescent29Fri
30Sat7:542.77:193.71:43-0.31:301.36:295:09Waxing Crescent30Sat
31Sun8:472.68:063.52:32-0.22:221.46:305:08Waxing Crescent31Sun
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 transitional phase. Tonight's moon is 23% 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 (23% 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