Chira-Piura irrigation and land reclamation system is located in coastal, arid part of northwest Peru, approximately 1,000 km far from Lima. The Poechos dam represents the most important structure of the Chira-Piura Special Project. It is executed within the Phase I of this project.
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Employer
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Peru, INADE – National Institute of Development, Executive Directorate of the Chira-Piura Project
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Dam
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type
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fill dam with clay core
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height
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48
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m
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crest length
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9,500
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m
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storage capacity
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1,000 x 106
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m3
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excavated material
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9.2 x 106
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m3
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incorporated material
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17.8 x 106
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m3
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placed concrete
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400,000
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m3
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Concrete diaphragm
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length
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1,000
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m
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average depth
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50
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m
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thickness
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0.60
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m
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Spillway
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maximum capacity
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5,500
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m3/s
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segment gates
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3 x (9.8 x 12.0)
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m
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placed concrete
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275,000
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m3
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Emergency spillway
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length
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400
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m
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maximum capacity
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9,500
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m3/s
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Diversion tunnel
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length
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415
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m
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diameter
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8
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m
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maximum capacity
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1,045
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m3/s
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