8331_NewGloucester_2021-2022_AnnualReport_Web

2022 Sabbathday Lake Water Quality Report

TABLE OF CONTENTS COMMONLY USED TERMS ........................................................................................... iii BACKGROUND & PURPOSE .......................................................................................... 1 METHODS....................................................................................................................... 2 RESULTS ......................................................................................................................... 2 Weather & CLIMATE CHANGE ............................................................................................................. 2 Trophic State Indicators ......................................................................................................................... 3 Water Clarity .......................................................................................................................3 Total Phosphorus .................................................................................................................4 Chlorophyll a........................................................................................................................5 Dissolved Oxygen & Temperature ..................................................................................................... 6 Dissolved Oxygen .................................................................................................................7 Temperature ........................................................................................................................7 Chemical Parameters ............................................................................................................................... 8 Color ....................................................................................................................................8 Alkalinity..............................................................................................................................8 pH ........................................................................................................................................9 SUMMARY...................................................................................................................... 9 Recommendations ................................................................................................................................. 10 RESOURCES FOR WATERSHED RESIDENTS................................................................ 10 REFERENCES ................................................................................................................. 11 ATTACHMENT 1- STATISTICAL ANALYSIS................................................................. 12

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