in march 1958, fluorescent dye was injected into the northernmost of the blue sinks. it was detected 28 hr. later in sulphur springs on the hillsborough river to the south (see sketch map). use these data to calculate the approximate velocity of flow in this portion of the floridan aquifer system (show your work): 1. in feet/hour: 2. in miles/hour: 3. in meters/hour: