How Tides Affect Club Operation

The South Sailing Basin, where the Cal Sailing Club launches its dinghies, has been silting in over the decades, and at very low tides the depth of water at the dock is too shallow to operate our rescue skiff. When that occurs, dinghies and windsurfing equipment cannot be used by members with a rating of Junior Skipper (in the case of dinghies) or Junior Plus Windsurfer (for windsurfing equipment) or below. Equipment may still be used by those with higher ratings who do not require the rescue skiff to be operational. You can also use the time to get your work credit out of the way, take your written or rigging tests, sail with a Senior or Cruising Skipper, or just sit on the bench and enjoy the scenery!

The following table may be used to help plan your sailing schedule, and avoid times when there is not enough water there at the dock to sail. The column headings are defined below the table.

When the tide level is below +1.5 ft., the rescue skiff may not be able to operate (times in yellow on the chart). Depending on conditions, the Day Leader may launch the low-tide skiff, which can operate to +0.0 ft. Below +0.0 ft. even the low-tide skiff cannot operate, and the club will close (times in red on the chart). 

The tide times used in generating this table are  estimates only . Many factors influence tide height which cannot easily be predicted (flow of rivers into the Bay, atmospheric pressure, etc.). It is the Day Leader's responsibility to evaluate conditions and determine club operating hours. Note that currently observed low tides at Richmond Inner Harbor are around 0.4 feet higher than predictions. You can apply this correction factor to the tide predictions for the Berkeley Marina to get an approximate idea of what the tides might actually be.

You can click on the Date and see the tide graph for that date.

This table is based on the official CSC thresholds of +1.5 ft. for low tide and +0.0 ft. for club closure.

Estimated CSC Schedule for tide-based closure for

May, 2021


DateOpenMid-Day Low WaterMid-Day CloseMid-Day ReopenMid-Day Normal WaterDockSunsetLow Tide
Sat May 1 12:28 PM12:28 PM12:28 PM12:28 PM1:44 PM7:29 PM7:59 PM10:21 AM
-1.2
Sun May 2 9:00 AM9:00 AM9:43 AM1:14 PM2:41 PM7:30 PM8:00 PM11:25 AM
-0.8
Mon May 3 01:50 PM1:50 PM1:50 PM1:50 PM3:30 PM7:31 PM8:01 PM12:30 PM
-0.4
Tue May 4 Noon12:00 PM12:54 PM2:11 PM4:13 PM7:32 PM8:02 PM1:33 PM
-0.1
Wed May 5 Noon12:05 PM4:48 PM7:33 PM8:03 PM2:29 PM
0.2
Thu May 6 10:00 AM1:16 PM5:16 PM7:34 PM8:04 PM3:18 PM
0.5
Fri May 7 Noon2:22 PM5:34 PM7:35 PM8:05 PM4:00 PM
0.8
Sat May 8 9:00 AM3:31 PM5:41 PM7:36 PM8:06 PM4:37 PM
1.2
Sun May 9 9:00 AM7:37 PM8:07 PM5:11 PM
1.6
Mon May 10 Noon7:38 PM8:08 PM6:09 AM
-0.1
Tue May 11 Noon7:39 PM8:09 PM6:41 AM
-0.3
Wed May 12 Noon7:39 PM8:09 PM7:14 AM
-0.5
Thu May 13 Noon7:40 PM8:10 PM7:48 AM
-0.5
Fri May 14 Noon7:41 PM8:11 PM8:25 AM
-0.5
Sat May 15 10:29 AM10:29 AM10:29 AM10:29 AM12:18 PM7:42 PM8:12 PM9:04 AM
-0.4
Sun May 16 11:05 AM11:05 AM11:05 AM11:05 AM1:03 PM7:43 PM8:13 PM9:48 AM
-0.3
Mon May 17 Noon12:00 PM1:49 PM7:44 PM8:14 PM10:36 AM
-0.2
Tue May 18 12:12 PM12:12 PM12:12 PM12:12 PM2:31 PM7:45 PM8:15 PM11:27 AM
-0.1
Wed May 19 Noon12:00 PM3:09 PM7:45 PM8:15 PM12:21 PM
0.0
Thu May 20 Noon12:00 PM3:42 PM7:46 PM8:16 PM1:14 PM
0.2
Fri May 21 Noon12:00 PM4:11 PM7:47 PM8:17 PM2:06 PM
0.4
Sat May 22 9:00 AM1:12 PM4:34 PM7:48 PM8:18 PM2:56 PM
0.7
Sun May 23 9:00 AM2:36 PM4:52 PM7:49 PM8:19 PM3:46 PM
1.1
Mon May 24 Noon7:50 PM8:20 PM4:35 PM
1.5
Tue May 25 Noon7:50 PM8:20 PM5:24 PM
1.9
Wed May 26 Noon7:51 PM8:21 PM6:34 AM
-1.9
Thu May 27 Noon7:52 PM8:22 PM7:23 AM
-2.1
Fri May 28 Noon7:53 PM8:23 PM8:14 AM
-2.0
Sat May 29 11:32 AM11:32 AM11:32 AM11:32 AM12:35 PM7:53 PM8:23 PM9:07 AM
-1.8
Sun May 30 12:12 PM12:12 PM12:12 PM12:12 PM1:23 PM7:54 PM8:24 PM10:02 AM
-1.3
Mon May 31 12:43 PM12:43 PM12:43 PM12:43 PM2:05 PM7:55 PM8:25 PM10:58 AM
-0.8

CSC Open and Close Times and Tides version 3.7.10