A 100 m × 55m detention pond is proposed for a 7.2-ha site. The detention pond is 2.0 m deep under control (pre-storm) conditions and the water-quality depth is 2.0 cm. Storage in the detention pond is to be discharged offsite via a triangular weir whose vertex is at the control elevation, and the flow rate over the weir. The average annual rainfall at the site is 120 cm, and the average runoff coefficient is 0.75. Determine e average detention time in the pond?
A 100 m × 55m detention pond is proposed for a 7.2-ha site. The detention pond is 2.0 m deep under control (pre-storm) conditions and the water-quality depth is 2.0 cm. Storage in the detention pond is to be discharged offsite via a triangular weir whose vertex is at the control elevation, and the flow rate over the weir. The average annual rainfall at the site is 120 cm, and the average runoff coefficient is 0.75. Determine e average detention time in the pond?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A 100 m × 55m detention pond is proposed for a 7.2-ha site. The detention pond is 2.0 m deep under control (pre-storm) conditions and the water-quality depth is 2.0 cm. Storage in the detention pond is to be discharged offsite via a triangular weir whose vertex is at the control elevation, and the flow rate over the weir. The average annual rainfall at the site is 120 cm, and the average runoff coefficient is 0.75. Determine e average detention time in the pond?
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