The Baffin Bay Watershed (HUC 12110205) covers a land area of approximately 10,500 square kilometers and is located in southern Texas. The hydrology of the watershed is characterized by intermittent streams and shallow groundwater reserves. The watershed is influenced by a specific snowpack, which occurs during winter months, and contributes to surface water availability during the dry season. Surface water resources within the watershed include Laguna Madre, a hypersaline lagoon, and several smaller reservoirs. The constituent makeup of these surface water bodies varies, with elevated levels of nutrients and contaminants attributed to agricultural and urban runoff. This watershed experiences a humid subtropical climate, with hot summers and mild winters. Trends within the region include increased precipitation variability and frequency of extreme weather events. These changes have implications for future water resource management in the region.