The Apalachee Bay-St. Marks Watershed is located in northern Florida, and covers an area of 1,450 square miles. The hydrology of the region is dominated by the flow of the St. Marks River, which drains the watershed and empties into Apalachee Bay. The region experiences a humid subtropical climate, with hot and humid summers and mild winters. Snowfall is rare, if not nonexistent, in this region. Surface water in the watershed is abundant and supports a diverse array of plant and animal life. The presence of several reservoirs within the watershed provides additional water resources for agricultural and recreational purposes. However, the quality of the water in these reservoirs is impacted by high levels of nutrients and pollutants, leading to water quality concerns. In recent years, the region has experienced several extreme weather events, including record-breaking heatwaves and intense storms. These trends are likely to continue as global temperatures continue to rise.