TY - RPRT TI - Fish passage in a western Iowa stream modified by grade control structures AU - M.E. Litvan AU - C.L. Pierce AU - T.W. Stewart AU - C.J. Larson PY - 2008 DO - 10.1577/m07-097.1 UR - https://pubs.usgs.gov/publication/70033249 ID - 70033249 ER -