This study is presented in order that a proposed irrigation development in the vicinity of Santa Cruz may be further evaluated. It has been proposed that an important area of sugar cane be irrigated from wells to be developed using groundwater. In order to define the feasibility of the proposed development, the needs and requirements for irrigation, together with probable benefits and costs, require definition. Although this study deals principally with irrigation requirements, other factors that influence feasibility are dealt with briefly. These include the availability of adequate supplies of good water and probable development costs, suitability of the soils of the area for irrigated agriculture, climatic conditions of the area that relate to needs and requirements for irrigation, and the approximate costs of various types of development.