Presentation on theme: "Measurements of Mercury Concentrations and Loads in a Large River System Tributary to San Francisco Bay, California, USA Nicole David, SFEI Lester McKee,"— Presentation transcript:
Measurements of Mercury Concentrations and Loads in a Large River System Tributary to San Francisco Bay, California, USA Nicole David, SFEI Lester McKee, SFEI Item #3
Hg Sources Watershed (Urban, Ag, etc.) Air Deposition (indirect and direct) Historic Item #3
Comparison of Yield Rates Worldwide 1 Negro and Solimões River, Brazil 2 MacKenzie, Canada 3 Sacramento River, CA 4 Potamac, MD 5 Headwater Mississippi, MN 6 Minnesota River, MN 7 São Francisco, Brazil 8 St. Croix River, MN 9 Blue Earth, MN 10 Rum River, MN 11 Le Sueur, MN 12 Sudbury River, MA (past superfund site) 13 Sudbury River, MA 14 Catchment in Sweden Item #3
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