Chironta Reservoir
Arica, Chili
90 m
Height
274 m
Crown length
2.275.000 m³
Volume of concrete/materials
17 hm³
Reservoir volume
The Chironta Reservoir located in Lluta Valley, Arica y Parinacota Region project, was developed by the Hydraulic Works Directorate of the Ministry of Public Works of the Republic of Chile. The reservoir is located at Site No. 4 in Chironta, Lluta Valley, approximately 70 km northeast of Arica.
The reservoir serves as a strategic water regulation infrastructure for the Lluta River, aimed at improving irrigation conditions, expanding agricultural land in the valley and mitigating flood events associated with high-altitude rainfall.
The main structure consists of a straight-axis compacted gravel dam, waterproofed by an upstream concrete face (CFGD). The dam is 90 m high and 274 m long at crest level, with slopes of 1.5H:1.0V upstream and 1.6H:1.0V downstream.
The project, developed by DRAGADOS, also includes complementary works required for operation and safety: spillway, diversion tunnel, bottom outlets, irrigation delivery works, instrumentation and control systems, access and perimeter roads —including a bridge—, as well as gauging and meteorological stations.
Project data
Project data
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Compacted gravel dam with upstream concrete face (CFGD), straight axis
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Dam height: 90 m
·
Crest length: 274 m
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Reservoir capacity: 17 hm³
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Dam embankment volume: 2.98 million m³
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