37.9950’ N, 121.4200’ W

Blackslough Landing, San Joaquin River, CA

61°
H 82°
L 56°
WSW
11mph
High tide
7:46 am

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

TIDE TIMES for Sunday, September 13, 2026
The tide is currently rising in Blackslough Landing, San Joaquin River, CA.
Next low tide : 1:51 pm (0.8 ft)
Next high tide : in 4h 14m at 7:46 am (3.0 ft)
Sunset today : 7:16 pm
Sunrise tomorrow : 6:46 am
Moon phase : Waxing Crescent (8% illuminated)
Tide Station Location : Station #9415021
Common Questions About Tides

Blackslough Landing, San Joaquin River, CA Tides - Feb 1874

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun5:572.65:123.911:181.57:175:36Full Moon1Sun
2Mon6:332.65:543.712:25-0.112:061.47:165:37Full Moon2Mon
3Tue7:102.66:353.41:030.012:541.27:155:38Waning Gibbous3Tue
4Wed7:462.77:183.01:380.01:411.17:145:39Waning Gibbous4Wed
5Thu8:212.78:042.72:120.22:310.97:135:40Waning Gibbous5Thu
6Fri8:562.88:552.42:440.43:240.87:125:41Waning Gibbous6Fri
7Sat9:312.99:532.13:120.74:220.77:115:42Third Quarter7Sat
8Sun10:073.010:592.03:311.05:230.77:105:43Third Quarter8Sun
9Mon10:473.23:301.36:240.67:095:45Third Quarter9Mon
10Tue12:111.911:34 AM3.43:481.57:230.57:085:46Third Quarter10Tue
11Wed1:242.012:283.64:351.78:180.37:075:47Waning Crescent11Wed
12Thu2:312.11:273.96:411.89:090.17:065:48Waning Crescent12Thu
13Fri3:272.32:244.18:031.89:58-0.17:045:49Waning Crescent13Fri
14Sat4:132.43:194.29:061.710:44-0.27:035:50Waning Crescent14Sat
15Sun4:552.64:114.210:061.511:28-0.37:025:51New Moon15Sun
16Mon5:352.75:024.111:041.27:015:52New Moon16Mon
17Tue6:142.95:553.812:09-0.312:010.97:005:53New Moon17Tue
18Wed6:543.16:493.512:49-0.212:580.66:585:54Waxing Crescent18Wed
19Thu7:343.37:463.11:280.01:570.46:575:55Waxing Crescent19Thu
20Fri8:173.58:472.72:060.32:570.26:565:57Waxing Crescent20Fri
21Sat9:023.69:522.32:440.64:000.26:555:58First Quarter21Sat
22Sun9:503.711:002.13:241.05:060.26:535:59First Quarter22Sun
23Mon10:433.84:131.36:120.26:526:00First Quarter23Mon
24Tue12:132.011:41 AM3.85:181.67:150.26:516:01First Quarter24Tue
25Wed1:302.012:433.86:281.78:140.26:496:02Waxing Gibbous25Wed
26Thu2:402.11:443.87:341.79:060.26:486:03Waxing Gibbous26Thu
27Fri3:322.32:403.78:341.69:530.26:466:04Waxing Gibbous27Fri
28Sat4:112.43:313.79:281.410:360.16:456:05Waxing Gibbous28Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9415021)

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

Collapse All
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 8% 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 Waxing Crescent (8% 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