Sediment Quality Index Calculator (SeQI)  (594KB) (zip)

CCME has developed the Sediment Quality Index Calculator (SeQI).  Based on the formulae of the Water Quality Index Calculator it provides a convenient means of summarizing complex data and facilitating its communication to a general audience.

The Sediment Quality Index Calculator is an MS EXCEL workbook which contains macros.  Your network settings may affect your ability to download the calculator and/or your default macro settings in MS EXCEL may affect your ability to open the calculator file.  If you get a "macro error message", go to the EXCEL menu bar, select Tools, click on Macro, click on Security, and change the setting from high to medium or low.  You may have to close and re-open the file.  When you open the file, you will find explicit directions under the "Getting Started" button.

For optimal functioning of the Sediment Quality Index calculator, it is recommended that you save a copy of the Excel file to your computer, rather than opening and using it online.

Indices are communication and education tools that summarize a number of water and sediment quality variables into a single measure of overall water or sediment quality.  Calculations of indices are best performed by scientific specialists with expertise in water or sediment quality.  Indices are not intended to replace detailed assessments of aquatic ecosystems.