Water Quantity Evaluation Near the Yanacocha Mine in Peru

Our model results showed that flows in some streams have and will continue to be decreased during the critical dry-season period. These results were used to determine which streams are most influenced by the mine and to evaluate potential mitigation options.
The results were based on our:
- Field and modeling study to assess the mine’s impacts on water quantity;
- Mine facility and regional stream network model based on geographic and satellite information; and
- Watershed model for partitioning rainfall among runoff, evapotranspiration, and groundwater recharge based on site-specific climate, vegetation, and soils data.
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History and Lessons from the Mesa de Diálogo y Consenso CAO-Cajamarca, Peru