Nutrient Criteria Slide Show            Slide 36


Despite the wide variety of land uses represented by the 21 study sites, very few sites were able to meet the proposed USEPA Nutrient Standards - except during unusually dry periods.  

Periphyton may prove to be useful surrogates for the "measurement" of ephemeral nutrients -- such as phosphorus -- that mostly appear in the water column during heavy runof events. 

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