Since you became discouraged not being able to find a job in the San Diego area, you enlarged the area in which you looked for a job with the result that the City of Porterville, in Tulare County, offered you a position as junior engineer. You are in the process of interviewing with the senior engineer for the city who has presented you with a situation to test your knowledge level. If water flows with a velocity of 9.85 ft/s in a rectangular channel that is 3 meters wide and has a depth of 9.84 feet. Required:
What is the change in depth and water surface elevation that will result if a gradual contraction in the channel width to 8.5 feet occurs?