The Western Okeechobee Inflow Watershed (HUC 03090103) covers approximately 3,420 square miles in south-central Florida. The watershed is predominantly flat, with elevations ranging from sea level to 20 feet. The hydrology of the area is primarily influenced by Lake Okeechobee, which serves as a major water source for the region. The watershed receives an average of 52 inches of rainfall annually, with the wet season occurring from May to October. The snowpack is not a significant factor in this region. The surface water in the watershed is used for agricultural, residential, and recreational purposes. Reservoir constituents include phosphorus, nitrogen, and other pollutants that contribute to the eutrophication of Lake Okeechobee. Interesting climatic facts include the presence of hurricanes and tropical storms, and the region's susceptibility to flooding. Trends in the area indicate a need for improved water management practices to address the impacts of population growth and climate change.