Response to Info Request - Attachment 4b - Engineering Report Part 2 MCU18-0015 & RAL18-0001 · MCU18/0015

OVERLAND FLOW CAPACITY
CALCULATIONS-DEVELOPED SCENARIO.
Q100 OVERLAND FLOW

GULLY LONGITUDINAL GRADE = 6.0%
MANNING'S EQN

FLOW AREA = 10.23m?

WETTED PERIMETER = 12.63m
ROUGHNESS = 0.15

FLOW DEPTH = 1.422m >
CAPACITY @ FLOW DEPTH = 14.52m'/s_
V=1.419m/s

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OVERLAND FLOW CAPACITY
+, CALCULATIONS-DEVELOPED SCENARIO

) Q100 OVERLAND FLOW

4 GULLY LONGITUDINAL GRADE = 6.0%
MANNING'S EQN

FLOW AREA = 10.25m?

WETTED PERIMETER = 12.64m

== ROUGHNESS = 0.15

FLOW DEPTH = 1.423m >
CAPACITY @ FLOW DEPTH = 14.56m*/s. a

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