Missouri River valley / Turkey River / Missisippi River / Small streams / Western Loess Hills / Missouri River / Iowa streams / Cedar River / Potato Creek / Mississippi River valley / Wapsipinicon River / Mississippi River / East Nishnabotna River / Skunk River / West Nishnabotna River / /
Organization
IOWA DEPARTMENT OF THE INTERIOR / U.S. Geological Survey Books and Open-File Reports Federal Center / Survey Division / Interagency Advisory Committee on Water Data / /
Person
DALLAS L . PECK / / /
Position
representative / DIRECTOR For additional information Copies / SECRETARY U.S. GEOLOGICAL SURVEY / /