King tides: high tide and low tide vary


Image: The Marine Room

While cycling into work one day, a staff member at San Diego Coastkeeper noticed that a section of the bikeway was under water. The cyclist hadn't seen water in this spot before and wondered what the cause was.

The flooding resulted from a king tide. King tides are the highest of high tides that are naturally occurring and predictable. The moon's position in relation to Earth handles all tides, including king tides.

  • How does the moon influence the tides?
  • How can the phases of the moon be used to predict tides?
  • How low is low tide? How high is high tide? What is the difference between the two?
  • How does low tide and high tide influence our coastal communities?


San Diego Coastkeeper: The King Tides Are Coming

NOAA: What is a King Tide?

California King Tides Project: Schedule of tides

Earth and Space Science

More Activities & Resources:

Why do high and low tides vary between two locations within close proximity of one another?
What causes the Catalina eddy, and when does it typically appear?

Image: San Diego Zoo Global


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