Scientific equipment at Hotcake Slough - Main study site No flash player has been set up. Please select a player to play Flash videos. Video not playing? Update your browser or download the video clip Chas Jones explains the equipment he uses to measure specific conductivity, water level, and water temperature at his study site in Hotcake Slough. Process Observed: Open WaterGroundwater UpwellingScientific MeasurementsTemperature Date Process Observed: Saturday, March 31, 2012 Galleries: Hotcake Slough - Main Gallery