The Buchanan Lyndon B Watershed is located in central Texas and covers an area of approximately 785 square miles. The hydrology of the watershed is influenced by the climate of the region, which is characterized by hot summers and mild winters. The specific snowpack in the area is not significant, as snowfall is rare in this part of Texas. Surface water in the watershed is primarily sourced from the Colorado River and its tributaries. The area is home to several reservoirs, including Lake Buchanan and Lake Lyndon B Johnson. These reservoirs are used for a variety of purposes, including flood control, recreation, and water supply. The watershed is also impacted by climatic trends, such as increasing temperatures and changing precipitation patterns. In recent years, the region has experienced more frequent and severe droughts, which have had significant impacts on the local ecology and water resources. Overall, the Buchanan Lyndon B Watershed is an important and complex ecosystem that is impacted by a range of factors, including hydrology, climate, and human activities.