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General Environment and Social Setting
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Aesthetic Values air quality alternative aquatic areas Bend National Park Big Bend gambusia Big Bend National Boquillas Canyon Brewster County campsites Chisos Mountains Clocha commercial company Commercial outfitters Cottonwood Campground Cultural Resources Draft Environmental Assessment eastern park Economic Values Endangered Species Environmental Assessment June Floodplain Floodplain Riparian flow habitat IBWC impacts issued Lajitas limits Management Plan Mariscal Canyon Mexican Mexico miles monitoring motorized watercraft Naegleria fowleri National Park Service occur park boundary Park's percent peregrine falcon permits Presidio primitive and wild primitive zones proposed action Recreational Values Reed Camp Rio Conchos Rio Grande Compact Rio Grande Village riparian zone river corridor River Use Management Santa Elena Canyon Santa Elena take-out Scenic River Values Scenic Rivers Act solid human waste Solis take-out Talley Texas Threatened and Endangered threshold zone toilet tributary trips may launch visitors water quality Wild and Scenic wild zone wilderness experience Wildlife and Fish