Water Quality Sampling
http://www.texaswatch.geo.txstate.edu/resources/Curriculum/Water%20Monitoring%20Curriculum%20Companion/curriculum%20lesson%202.pdf

Department of Geography Texas State University-San Marcos, Texas Watch Monitoring Program


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This 6-paged PDF lesson plan from the Texas Watch Monitoring Manual explains turbidity and how it is measured. The document features background information about taking Secchi disk measurements to determine turbidity and offers a set of lab activities and worksheets using the Secchi technique. A protocol for measuring turbidity with a Secchi disk is also included.

This resource is referenced here:
Subject: Biology, :Ecology:Metabolism, Geoscience:Hydrology:Surface Water:Water Quality/Chemistry , Biology:Ecology:Habitats:Water Column
Resource Type: Scientific Resources:Overview/Reference Work, Activities:Lab Activity, Field Activity:Field trip
Grade Level: College Lower (13-14), Middle (6-8), High School (9-12)
Topics: Hydrosphere/Cryosphere:Surface Water:Water Quality/Chemistry, Biosphere:Ecology, Ecology:Habitats:Freshwater, Water ColumnKeywords: nutrient load, sediment load, water quality monitoring