"One of the world's great karstic aquifer systems, the Edwards aquifer system supplies water for more than 2 million people and for agricultural, municipal, ind

This text explores the natural history of Texas and more than 2900 springs in 183 Texas counties. It also includes an in-depth discussion of the general charact

Devil's Den to Lickingwater tells the multifaceted tale of the Mill River in Western Massachusetts, from its emergence after the glaciers 20,000 years ago to th