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A 'tide' in the life of a Cill

Updated: 18-09-2010

Photos by Lis Jones:

This cill is a submerged 'earth' dam that separates the inner and outer basins of Falmouth Marina. At low water it keeps enough water in the inner basin to keep the boats afloat but effectively 'berth-bound' in the marina.

Cill at LW Springs Cill at LW Springs, Inner Basin to the left

A depth gauge helpfully shows the depth of water over the cill in metres.

Depth Gauge Depth Gauge

During September, LW Springs has one of the lowest water levels of the year.

Depth Gauge Very Low Water!

...the tide begins to flood...

a little later flood tide

...a little later...

a little later flood tide gaining strength

...levels rising ...

levels rising Cill nearly covered

The depth gauge shows the rising level of water.

Depth gauge with water level rising Depth gauge with water level rising

The cill is now covered by the rising tide but vessels in the Inner Basin are still afloat but still 'stuck' in the marina by the lack of depth of water over the cill.

Cill covered again Don't forget it's there, the cill is now covered

At HW Springs there is a generous 3.0 metres of water over the cill allowing vessels to pass safely over the cill for a period either side of HW.

HW Springs Depth gauge at HW Springs