TY - RPRT TI - Ground-water levels and flow at selected study sites in the Walnut Creek Management System Evaluation Area, Boone and Story counties, Iowa, 1991-93 AU - Robert Buchmiller PY - 1996 DO - 10.3133/wri954109 UR - https://pubs.usgs.gov/publication/wri954109 ID - wri954109 ER -