Threemile Slough Tides Today
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Threemile Slough runs a mean tidal range of about 2.9 ft. This month the highest water, 4.9 ft, comes on the afternoon of Nov 25, and the lowest, a -0.4 ft minus tide, on the morning of Nov 27.
| Low tide | 5:15 AM | -0.0 ft |
| High tide | 11:33 AM | 3.4 ft |
| Low tide | 5:31 PM | 0.8 ft |
| High tide | 11:02 PM | 3.2 ft |
Today on the water at Threemile Slough
Today at Threemile Slough: high tide at 11:33 AM (3.4 ft) and 11:02 PM (3.2 ft), low tide at 5:15 AM (-0.0 ft) and 5:31 PM (0.8 ft). The National Weather Service forecast for Tuesday is light rain with SE winds 3 to 7 mph, 60°F. Sunrise is at 6:33 AM and sunset at 5:06 PM.
| Period | Forecast | Wind | Temp |
|---|---|---|---|
| Overnight | Mostly Clear | S 3 mph | 52°F |
| Tuesday | Light Rain | SE 3 to 7 mph | 60°F |
Forecast: National Weather Service point forecast for this location.
Where Threemile Slough is
Threemile Slough sits at 38.1067° N, 121.7000° W on San Francisco Bay, about 3 mi south of Rio Vista, CA, in Sacramento County. The station here is a subordinate tide prediction point. NOAA has no gauge in the water at this spot; its times and heights are published as offsets from a reference gauge, named below. The closest gauge measuring live water level is Port Chicago, Suisun Bay (NOAA 9415144), 18.8 mi away, and high and low water here run on average about 114 min later than there. The nearest weather station is Pittsburg (Suisun Bay), CA, a shore station reporting wind and, at most sites, water temperature, 11.2 mi away.
The tide at Threemile Slough
Threemile Slough has a semidiurnal tide: two highs and two lows a day of about the same size, roughly 12 hours 25 minutes apart. This month's predictions average 1.9 high tides a day here. For the water around it: Bay tides are mixed semidiurnal, two unequal highs a day with a range near 6 ft at the Golden Gate that shifts in time as it moves into the bay and up the rivers.
About this station
- NOAA predicts tides here from Port Chicago, Suisun Bay, station 9415144. High tide comes about 109 min later and low tide about 118 min later than there.
- High tide heights run about 0.82 times the reference.
Datum and source
Heights on this page are feet above mean lower low water (MLLW), the zero NOAA's nautical charts use for soundings. A predicted 0.0 ft low is the average of the lower low each day; a minus tide is water below chart datum, and a 2 ft high means 2 ft more water than the chart shows. NOAA publishes no datums for this point. Its predictions are offsets from Port Chicago, Suisun Bay and are referenced to MLLW there. Source: NOAA CO-OPS station 9415236, established 1977, gauge removed 1992. The tide times and heights are published as time and height offsets from its reference gauge; TidalMap republishes them daily and does not alter them.
Tide stations near Threemile Slough
- Threemile Slough entrance: 1.6 mi, tides about 40 min later
- Rio Vista: 2.7 mi, tides at about the same time
- Steamboat Slough, Snug Harbor Marina: 5.8 mi, tides about 42 min later
- Korths Harbor, San Joaquin River: 7.2 mi, tides about 74 min later
- Dutch Slough: 7.4 mi, tides about 46 min later
TidalMapMonthly tide calendar
🌊 Biggest flood tides at Threemile Slough this month: Nov 23, Nov 24, Nov 25, Nov 26, Nov 27. These spring highs push water up into the grass and over the oyster rock; prime for poling into flooded marsh for tailing reds.
🔻 Negative (minus) low tides at Threemile Slough this month: Nov 1, Nov 2, Nov 3, Nov 6, Nov 7, Nov 8, Nov 9, Nov 10, Nov 12, Nov 13, Nov 22, Nov 23 …. These drain the flats and expose the oyster rock, prime for sight-fishing and clamming.
Best fishing times (solunar)
Major and minor solunar windows for Threemile Slough, peak feeding activity is around the moon overhead/underfoot (majors) and moonrise/moonset (minors). Score is the day's activity coefficient (0–100).
| Day | Major windows | Minor windows | Score |
|---|---|---|---|
| Today 🌗 | 6:39–8:39 AM 7:04–9:04 PM | 11:48–1:48 AM 1:18–3:18 PM | 49 |
| Wed Nov 4 🌗 | 7:27–9:27 AM 7:52–9:52 PM | 12:58–2:58 AM 1:44–3:44 PM | 62 |
| Thu Nov 5 🌘 | 8:12–10:12 AM 8:37–10:37 PM | 2:06–4:06 AM 2:08–4:08 PM | 74 |
| Fri Nov 6 🌘 | 8:57–10:57 AM 9:22–11:22 PM | 3:12–5:12 AM 2:33–4:33 PM | 84 |
| Sat Nov 7 🌘 | 9:42–11:42 AM 10:07–12:07 AM | 4:17–6:17 AM 2:59–4:59 PM | 92 |
| Sun Nov 8 🌘 | 10:29–12:29 PM 10:54–12:54 AM | 5:22–7:22 AM 3:28–5:28 PM | 97 |
| Mon Nov 9 🌑 | 11:17–1:17 PM 11:42–1:42 AM | 6:26–8:26 AM 4:02–6:02 PM | 99 |
Predictions & observations: NOAA CO-OPS station 9415236. Solunar windows computed from the moon's position for this location. Times shown in the station's local time. Not for navigation.
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