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Aquatic biologist Karen Sablan collects water samples for routine quality analysis near the headwaters of the San Antonio River. The entire river basin runs from Kerr County west of San Antonio almost to the Gulf of Mexico, draining nearly 4,200 square miles and dropping some 2,400 feet in elevation along the way.
Everyone knows that rainwater runoff impacts water quality. Hydrology technicians at the San Antonio River Authority want to know more than that. They have created software modeling tools that let them better predict water dispersal and more effectively manage ensuing downstream...
