Office in Albuquerque, New Mexico, for conducting all fish assemblage surveys, maintaining required Federal permits to collect and handle Rio Grande silvery minnow, and making onsite fish identifications and counts. The authors would also like to recognize the efforts of Sarah Beck, Justin Reale, and staff with the U.S. Army Corps of Engineers, Albuquerque District for assisting with fish assemblage surveys and measuring and documenting physical characteristics and water-quality properties. The authors gratefully acknowledge the contributions of Dr. Timothy H. Bonner, Texas State University. Dr. Bonner was of tremendous help calculating certain fish species metrics, and his insights into minnow species, including Hybognathus amarus (Rio Grande silvery minnow), were invaluable. The time, advice, and professional expertise that he provided greatly improved the report.