The Everglades watershed (HUC 03090202) covers an area of approximately 4,227 square miles in southeastern Florida. The hydrology of the area is characterized by a slow-moving shallow river that flows from Lake Okeechobee to the Gulf of Mexico. The watershed receives an average of 60 inches of rainfall annually, with the wet season occurring from May to October. The region does not experience snowpack. Surface water is the primary source of water for the Everglades, and the watershed includes several large reservoirs, such as the Everglades Agricultural Area and the Water Conservation Areas. These reservoirs contain high levels of nutrients that contribute to harmful algal blooms. Climate change is also affecting the region, with sea level rise and increased temperatures leading to changes in the hydrology and vegetation of the Everglades.