Day in the Life of the Hudson River 10/20/15 HARLEM RIVER MILE 10 Ward’s Island on the Harlem River Dinorah Hudson, High School for Math, Science and Engineering @ City College 60 -12th graders, 6 adults 40.79N and 73.92W ITEM Weather Time 11:00 AM Reading 1 Clear day Water Temperature Chemistry Dissolved Oxygen pH (color match test 11:05 AM 17 Degrees C 11:05 AM 12:10 PM 7 ppm 6 Reading 2 Fall temperatures Comments 17 Degrees C 70% saturated strips) Salinity – hydrometer Phosphate test strips Nitrate test Strips Turbidity Tides Current Fish Catch – TOTAL CATCH 41 Macroinvertebrate Catch TOTAL CATCH 9 Sediment Core 11:50 AM 11:45 AM 10:47 AM 10:56 AM 11:42 AM 11:55 AM Number caught 41 DIV 1 1 4 4 DIV 3 Length 8 inch 22 ppt 0% 0% 12.93 cm Ebbing 16.7 ft.min Species 509 cm/60 sec Length of largest 8.48 cm/sec Common Mud Gravel Pebbles Wood Abundant Sand Atlantic Silverside Crangon Shrimp Jelly fish Snails Properties No H2S smell No oil No oxidized top
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