3. What is the flowrate (cfs) for a 1 foot diameter circular orifice with an invert of 0.0 feet if the water surface is at elevation 5.0 feet?(a) < 5cfs

(b) 5-10 cfs (c) 10-15 cfs (d) > 15 cfs Circular Orifice - Q (cfs) = C*A *(2*32.2*H)^0.5%3! C = 0.6 A (ft2) is pipe area = (3.14*Diameter^2)/4 where Diameter is in ft where H (ft) is the height of water above the centerline of the orifice