The Middle Sabine Watershed covers an area of approximately 5,950 square miles in eastern Texas and western Louisiana. It is primarily a forested area with some agricultural land use. The watershed is fed by several small streams and rivers and drains into the Sabine River. The hydrology of the watershed is influenced by the Gulf of Mexico, which can bring heavy rain events and occasional hurricanes. Snow is rare in this region, and when it does occur, it typically melts quickly. Surface water in the watershed is used for drinking water, recreation, and industrial purposes. Reservoirs in the watershed include Toledo Bend and Sam Rayburn. The climate in the Middle Sabine Watershed is subtropical with hot summers and mild winters. Recent trends indicate an increase in precipitation and temperature, potentially due to climate change.