West Coast
Grant Line Canal (drawbridge)
California · NOAA station 9414785 · Tide predictions
37.8200, -121.4470
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48-hour outlook
Drag across the curve to inspect any time. Weather icons show the forecast at each high tide.
Drawn from the high/low predictions — NOAA publishes high/low only for this station.
The next seven days
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H = high tide · L = low tide · highs & lows in local time
On the water nearby
San Francisco Bar, CA (142) buoy · 65 mi W · Station 46237
Wind & wave reports →
Nearby tide stations
- Borden Highway Bridge, Middle River · 5.4 mi NW
- Holt, Whiskey Slough · 8.0 mi N
- Borden Highway Bridge, Old River · 8.3 mi NW
- Orwood, Old River · 10.2 mi NW
- Blackslough Landing · 12.2 mi N
Plan ahead
2027 tide extremes for this station
Highest predicted high tide: 4.7 ft — Sun Jul 4 · 7:43 AM
Lowest predicted low tide: -0.4 ft — Sat Jan 23 · 3:06 AM
Biggest single-day swing: 5.0 ft on Sun Jul 4
Best daytime minus tides of 2027
| Date | Low tide | Height |
|---|---|---|
| Mon Jun 7 | 5:56 PM | -0.4 ft |
| Sun Jun 6 | 5:11 PM | -0.4 ft |
| Mon Jul 5 | 4:51 PM | -0.4 ft |
| Tue Jun 8 | 6:42 PM | -0.3 ft |
| Tue Jul 6 | 5:31 PM | -0.3 ft |
| Sat Jun 5 | 4:24 PM | -0.3 ft |
| Sun Jul 4 | 4:09 PM | -0.3 ft |
| Wed May 19 | 3:06 PM | -0.3 ft |
| Thu May 20 | 3:52 PM | -0.3 ft |
| Wed Jul 7 | 6:09 PM | -0.3 ft |
154 minus tides (below 0 ft) are predicted here in 2027. The table shows up to the 10 lowest that fall between 7 AM and 7 PM — the ones worth planning a clam dig or tidepool walk around.
About this station
NOAA builds the predictions for Grant Line Canal (drawbridge) from the PORT CHICAGO, SUISUN BAY station: high tides about 0.76× the height, 374 min later; low tides about 0.68× the height, 380 min later.
Mixed semidiurnal tides — two unequal highs and two unequal lows a day — with ranges growing as you head north. Harbor entrances feel the swell as much as the tide.