The Secchi Disk - What is it?
http://mlswa.org/secchi.htm

Michigan Lake and Stream Associations

This resource is no longer officially part of our collection This resource has been removed from our collection, likely because the original resource is no longer available. If you have further information about the link (e.g. a new location where the information can be found) please let us know.

You may be able to find previous versions at the Internet Archive.

This website, hosted by the Michigan Lake and Stream Associations, offers a comprehensive description of the Secchi disk. It includes a history of the Secchi disk, a discussion on the value of Secchi readings, and a description of Secchi disk data and results analysis.

Subject: Biology, Ecology:Habitats:Water Column, Geoscience:Geology:Sedimentary Geology:Sediment Transport and Deposition, Geoscience:Hydrology:Surface Water:Water Quality/Chemistry
Resource Type: Scientific Resources:Overview/Reference Work
Grade Level: College Lower (13-14), General Public, High School (9-12), Middle (6-8)
Theme: Teach the Earth:Teaching Topics:Water, Teach the Earth:Course Topics:Hydrology/Hydrogeology, Ecology, Sedimentary GeologyKeywords: turbidity, TSS, water clarity