Tides & Currents

Question 1

Mean Range

Answer 1

4.1 to 4.6 ft

Question 2

Diurnal Range

Answer 2

7.1 to 7.6 ft

Question 3

Tides

Answer 3

Mixed diurnal with large daily inequalities which complicates the tides. Tide tables should be consulted.

Question 4

Cape Flattery to Race Rocks

Answer 4

2-4 kts
varying with range of tide and influenced by stong winds
E of Race Rocks considerably less, wider
Race Rocks or Discovery velocity 6 kts or more

Question 5

Flood Current

Answer 5

continued set towards Vancouver Island, as far east as Race Rocks.
Velocity greater on N then S.

Question 6

Ebb Current

Answer 6

Felt most along the south shore of the straight between New Dungeness light and Crescent Bay.
Decided set S an W especially during large tides.

Question 7

Dungeness Spit

Answer 7

Lighted bell buoy marks shoal off Dungeness spit
can be submerged during periods of high current.
Large vessels should not pass between buoy and light.

Question 8

Tide Rips

Answer 8

around prominent points and along the banks including Constance bank.
Particularly heavy off Race Rock, Clover Pt, Staines Pt and Dungeness Spit and can be Dangerous to small vessels.