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DAM AND RESERVOIR ON THE LA LECHE RIVER, LAMBAYEQUE, PERU HYDROLOGIC STUDIES
Dr. Victor M. Ponce, Consultant
070711
This document contains a statement of work in relation to the hydrologic studies to support feasibility design
of the proposed dam and reservoir on the La Leche River, in Lambayeque, Peru. The hydrologic component of the overall
project will focus on the determination of flood discharges to support design of the overflow spillway.
The following tasks will be accomplished:
- Review of existing studies. The Consultant will perform a comprehensive review of the existing hydrology study, dated 1992.
- Visit to project site. The Consultant will meet with local engineers and discuss the project features and design needs.
- Review of existing climatological data. The Consultant will visit the SENAMHI offices in Chiclayo and Lima, confer with government
officials, and purchase the existing precipitation and
discharge data needed to support project studies.
- Hydrologic modeling. The Consultant will perform the required basin modeling to determine flood discharges for
various return periods, from 2 to 100 years. The Consultant will use the RAINFLO model to determine flood discharges for postulated
event precipitation. Hydrologic abstractions will be estimated based on aerial photographs, local experience, and field visits.
Once the series of 2-100 years flood flows is determined,
the Consultant will use the Gumbel method
to extend the record to 10,000 years. The latter is considered akin to the Probable Maximum Flood.
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