1. A fundamental or primary water storage facility designed to hold and supply water for basic needs such as drinking, irrigation, or industrial use
The village relied on a basic reservoir to supply water during the dry season.
A aldeia dependia de um reservatório básico para fornecer água durante a estação seca.
2. In geology or hydrocarbon extraction, the primary rock formation or geological formation that stores and contains fluids such as oil, gas, or water
The oil company discovered a basic reservoir containing substantial crude oil deposits.
A companhia petrolífera descobriu um reservatório básico contendo depósitos substanciais de petróleo bruto.