While studying a local stream, you have been tasked with determining the discharge of that stream. upon field investigation, you determine that the stream is 24.6 feet across and the deepest portion of the stream measure 3.2 feet in depth. to determine velocity, you mark a 10 foot section of the river and measure the time it takes a leaf to travel this 10 feet. the time you record is 20 seconds. using the data you calculate the discharge to be