The Buffalo San Jacinto Watershed (HUC 12040104) covers an area of approximately 1,047 square miles in southeastern Texas, USA. The watershed is characterized by low relief, highly permeable soils, and a humid subtropical climate. It is home to several streams and rivers, including the Buffalo Bayou and San Jacinto River, which provide important surface water resources for the region. The watershed experiences variable precipitation patterns with a wet season from May to October and a dry season from November to April. The snowpack in the region is generally minimal. Reservoirs in the area, including Lake Conroe and Lake Houston, provide important water storage for the region. Interesting climatic trends include increasing temperatures and severe weather events, such as hurricanes and flooding, which have the potential to impact the hydrology and water resources of the watershed.