Upper Basin Access

Tides & Cill

Needs 2.45 m
Status
Gate shut

Opens 13:11. Tide now 2.28 m above chart datum.

Today's Curve

Threshold 2.45 m CD
00:0006:0012:0018:0023:00
HW 05:005.9 m
LW 11:001.8 m
HW 18:005.9 m

Cill Crossing Window

Best times today
Water over cill now
1.18 m
3.9 ft on the marker board
Reading the webcam board…
TOO SHALLOW
Need 1.35 m (4.4 ft)
  • 00:4509:479h 02m open
    Best crossing 05:00Max depth 4.78 m (15.7 ft)
  • 13:1122:139h 02m open
    Best crossing 18:00Max depth 4.78 m (15.7 ft)
Last updated localTide & forecast hour 13:00 · refreshes every minute

Cill crest 1.1 m above chart datum · 0.95 m draft + 0.4 m clearance. When the cill webcam board is legible its reading overrides the tide model and shifts today's window depths by the same offset (board re-read every 5 min). Planning aid — always confirm on the board or webcam.

Week Ahead

Sill crossings
Thu2 windows
Sill passable00:4509:47
Sill passable13:1122:13
Fri2 windows
Sill passable01:3410:39
Sill passable14:0223:00
Sat2 windows
Sill passable02:2511:30
Sill passable14:5123:00
Sun2 windows
Sill passable03:1612:20
Sill passable15:4023:00
Mon3 windows
Sill passable00:0000:44
Sill passable04:0713:09
Sill passable16:3023:00
Tue3 windows
Sill passable00:0001:35
Sill passable05:0013:58
Sill passable17:2223:00
Wed3 windows
Sill passable00:0002:26
Sill passable05:4714:50
Sill passable18:1323:00

How This Is Worked Out

  • Cill crest height: 1.1 m above chart datum (marker board zero)
  • Vessel draft: 0.95 m · safety clearance: 0.4 m
  • Required tide height: 2.45 m above chart datum
  • Model sea level converted using MSL 3.8 m above CD
  • Planning aid only — confirm against official tide tables and the marina