Establish sampling points
Where monitoring sites are placed is based on the kind of picture you would like to obtain of the watershed. Placing sites equally spaced between the headwaters and the mouth of your stream can reveal a baseline picture, however, closely spaced monitoring sites upstream and downstream of a certain site can be used to determine the extent of human impact.
Develop a monitoring plan for each sampling point: when each site should be sampled and which tests are to be conducted. It is best to keep sampling scheduled at consistent intervals to maintain the integrity of the data collected.
Typical Watershed Assessment Parameters
Which parameters are measured will depend upon the questions that the assessment to measure. The following are commonly sampled parameters that can provide a nice overview of watershed health.
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Water quality measurements (pH, dissolved oxygen, biological oxygen demand (BOD), conductivity, metals)
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Flow
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Visual observations
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Biology
Be sure to follow proper
field assessment procedures at
each sampling site during the assessment.