Secchi Disk

The first "secchi disk" type measurement was done in 1896 and recorded a depth of 30 meters. A few sporadic readings occurred in 1913, 1937-39, 1954, 1960, 1968-69, but regular annual measurements began in 1978 and continue to the present.

 

Secchi Disk part 1

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Duration:
31 seconds

A short video excerpted from the visitors center film "Crater Lake  Into the Deep".

 

Secchi Disk 2

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Duration:
30 seconds

Short video excerpted from the visitors center film "Crater Lake  Into the Deep".

Contact the Park

Mailing Address:

Crater Lake National Park
PO Box 7

Crater Lake , OR 97604

Phone:

(541) 594-3000

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