“Intermittent and ephemeral streams provide critical fish habitat out West. They account for 94 percent of Arizona’s streams, according to the EPA, and 88 percent of those in New Mexico.” The same holds true here in the Hill Country as these tributaries feed the Llano, Pedernales, Blanco, Guadalupe and Nueces Rivers. “These streams provide the flow for larger rivers and spawning and rearing habitat for young fish and insects; they also help to determine the quality of downstream habitat for fish.” Read more from the Washington Post.