REPORT OF INVESTIGATIONS NO. 42 INTRODUCTION To satisfy the demands of a rapidly increasing population, many acres of land in Florida are converted each year to residential and industrial uses. Urbanization of these areas and the demand for increasing the food supply thus require that man search for new areas to develop for agricultural uses. This search, in many instances, has led to the development of marginal lands. The Green Swamp area, shown in figure 1, in central Florida is an area where man is developing agricultural land from marginal land. The present efforts for its development are similar to the early efforts for developing the Everglades in that many miles of canals and ditches have been constructed to improve the drainage. .Figure 1. Map of Florida showing location of Green Swamp area.