<Tr> <Td_colspan="2"> Map of the Guadalupe River watershed </Td> </Tr> <Tr> <Td_colspan="2"> Website: Handbook of Texas: Guadalupe River </Td> </Tr> <P> The Guadalupe River runs from Kerr County, Texas, to San Antonio Bay on the Gulf of Mexico . It is a popular destination for rafting, fly fishing, and canoeing . Larger cities along it include Kerrville, New Braunfels, Seguin, Gonzales, Cuero, and Victoria . It has several dams along its length, the most notable of which, Canyon Dam, forms Canyon Lake northwest of New Braunfels . </P> <P> The upper part, in the Texas Hill Country, is a smaller, faster stream with limestone banks and shaded by pecan and bald cypress trees . It is formed by two main tributary forks, the North Fork and South Fork Guadalupe Rivers . It is popular as a tubing destination where recreational users often float down it on inflated tire inner tubes during the spring and summer months . East of Boerne, on the border of Kendall County and Comal County, it flows through Guadalupe River State Park, one of the more popular tubing areas along it . </P>

Where are the headwaters for the guadalupe river