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KRIS Humboldt Bay: Chart Page

Area Elk River
Topic Aquatic Insects: EPT Index Elk River 1994-96
Caption:  The EPT Index is the number of taxa of mayflies, stoneflies and caddisflies, insect orders that are relatively intolerant of pollution. There was a range of aquatic health at the three sampling stations in 1994-96 when measurements were taken according to criteria established by Harrington (1999) who characterized communities with over 25 EPT taxa as healthy and diverse and those with fewer than 12 as non-diverse and impaired. Click on Picture to see the location of sampling stations in Elk River and also the forest types. Click on Info Links for more information on using aquatic invertebrates as indicators of water quality. Data from the PALCO.

To learn more about this topic click Info Links .
To view additional information (data source, aquisition date etc.) about this page, click Metadata .
To view the table with the chart's data, click Chart Table web page.
To download the table with the chart's data, click erbugsum.dbf (size 391 bytes)
To download the table with the chart's data as an Excel spreadsheet, click erbugsum.dbf.xls (size 3,584 bytes) .