The Nueces Headwaters Watershed (HUC 12110101) covers approximately 1,622 square miles in Texas, with the headwaters located in the western portion of the watershed. The hydrology of the watershed is dominated by intermittent creeks and streams, with the Nueces River being the largest water body. The area receives limited snowfall, with the most significant precipitation occurring in the spring and fall. Surface water quality has been impacted by agricultural practices, urbanization, and oil and gas exploration. The major reservoirs in the watershed include Choke Canyon and Lake Corpus Christi. Interesting climatic facts include the area experiencing extreme temperature fluctuations, with summer temperatures often exceeding 100 degrees Fahrenheit and winter temperatures falling below freezing. There has been a trend of decreasing precipitation in recent years, creating challenges for water resource management in the region.